{
  "generated_at": "2026-05-18",
  "quality_note": "Source research dashboards are generated routing layers over candidate OCR/PDF evidence.",
  "source_count": 15,
  "sources": [
    {
      "source_id": "america-and-new-epoch",
      "title": "America and the New Epoch",
      "year": 1916,
      "sections": 18,
      "words": 44474,
      "equation_candidates": 16,
      "formula_candidates": 21,
      "figure_candidates": 0,
      "promoted_crops": 0,
      "modern_visual_guides": 0,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "ether",
          "label": "Ether references",
          "count": 47
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 25
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 7
        },
        {
          "id": "transients",
          "label": "Transients / damping",
          "count": 6
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 3
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 2
        }
      ],
      "concepts": [
        {
          "id": "corporation",
          "label": "Corporation",
          "count": 244,
          "link": "/concept-concordance/corporation/"
        },
        {
          "id": "competition",
          "label": "Competition",
          "count": 78,
          "link": "/concept-concordance/competition/"
        },
        {
          "id": "co-operation",
          "label": "Co-operation",
          "count": 67,
          "link": "/concept-concordance/co-operation/"
        },
        {
          "id": "monarchy",
          "label": "Monarchy",
          "count": 19,
          "link": "/concept-concordance/monarchy/"
        },
        {
          "id": "democracy",
          "label": "Democracy",
          "count": 16,
          "link": "/concept-concordance/democracy/"
        }
      ],
      "glossary": [
        {
          "id": "co-operation",
          "label": "co-operation",
          "count": 67
        }
      ],
      "priority_sections": [
        {
          "id": "america-and-new-epoch-chapter-04",
          "label": "Chapter 3: The Individualistic Era: From Competition to Co-operation",
          "word_count": 4451,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-04/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-04/"
          }
        },
        {
          "id": "america-and-new-epoch-chapter-05",
          "label": "Chapter 4: The Individualistic Era: The Other Side",
          "word_count": 3764,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-05/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-05/"
          }
        },
        {
          "id": "america-and-new-epoch-chapter-07",
          "label": "Chapter 6: Germany in the Individualistic Era",
          "word_count": 2448,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-07/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-07/"
          }
        },
        {
          "id": "america-and-new-epoch-chapter-14",
          "label": "Chapter 13: Evolution: Industrial Government",
          "word_count": 2660,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-14/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-14/"
          }
        },
        {
          "id": "america-and-new-epoch-chapter-18",
          "label": "Chapter 17: Conclusion",
          "word_count": 2276,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-18/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-18/"
          }
        },
        {
          "id": "america-and-new-epoch-chapter-12",
          "label": "Chapter 11: Democracy and Monarchy",
          "word_count": 1574,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-12/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-12/"
          }
        },
        {
          "id": "america-and-new-epoch-chapter-03",
          "label": "Chapter 2: The Epoch of the French Revolution",
          "word_count": 1254,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-03/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-03/"
          }
        },
        {
          "id": "america-and-new-epoch-chapter-17",
          "label": "Chapter 16: The Future Corporation",
          "word_count": 3488,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/america-and-new-epoch/chapter-17/",
            "workbench": "/chapter-workbench/america-and-new-epoch/chapter-17/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/america-and-new-epoch/",
        "source_text": "/source-texts/america-and-new-epoch/",
        "workbench": "/chapter-workbench/america-and-new-epoch/",
        "visual_map": "/diagrams/source-visuals/america-and-new-epoch/",
        "formula_map": "/mathematics/source-formula-maps/america-and-new-epoch/",
        "archive": "https://archive.org/details/americanewepoch00stei"
      }
    },
    {
      "source_id": "elementary-lectures-electric-discharges-waves-impulses",
      "title": "Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients",
      "year": 1911,
      "sections": 10,
      "words": 32133,
      "equation_candidates": 54,
      "formula_candidates": 300,
      "figure_candidates": 16,
      "promoted_crops": 0,
      "modern_visual_guides": 5,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "transients",
          "label": "Transients / damping",
          "count": 483
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 477
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 404
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 326
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 241
        },
        {
          "id": "lightning-surges",
          "label": "Lightning / surges",
          "count": 112
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 107
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 47
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 79,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 16,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 14,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 13,
          "link": "/concept-concordance/wave-length/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 11,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "velocity-of-light",
          "label": "Velocity of light",
          "count": 4,
          "link": "/concept-concordance/velocity-of-light/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 1,
          "link": "/concept-concordance/radiation/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 16
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 13
        }
      ],
      "priority_sections": [
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-07",
          "label": "Lecture 7: Line Oscillations",
          "word_count": 3398,
          "equations": 8,
          "figures": 3,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-07/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-07/"
          }
        },
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-04",
          "label": "Lecture 4: Single-Energy Transients In Alternating Current Circuits",
          "word_count": 5396,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-04/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-04/"
          }
        },
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-06",
          "label": "Lecture 6: Double-Energy Transients",
          "word_count": 2818,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-06/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-06/"
          }
        },
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-02",
          "label": "Lecture 2: The Electric Field",
          "word_count": 2138,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-02/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-02/"
          }
        },
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-05",
          "label": "Lecture 5: Single-Energy Transient Of Ironclad Circuit",
          "word_count": 1306,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-05/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-05/"
          }
        },
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-01",
          "label": "Lecture 1: Nature And Origin Of Transients",
          "word_count": 2696,
          "equations": 6,
          "figures": 3,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-01/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-01/"
          }
        },
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-03",
          "label": "Lecture 3: Single-Energy Transients In Continuous Current Circuits",
          "word_count": 2569,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-03/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-03/"
          }
        },
        {
          "id": "elementary-lectures-electric-discharges-waves-impulses-lecture-10",
          "label": "Lecture 10: Inductance And Capacity Of Round Parallel Conductors",
          "word_count": 4572,
          "equations": 0,
          "figures": 3,
          "quotes": 0,
          "links": {
            "source": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/lecture-10/",
            "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/lecture-10/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/elementary-lectures-electric-discharges-waves-impulses/",
        "source_text": "/source-texts/elementary-lectures-electric-discharges-waves-impulses/",
        "workbench": "/chapter-workbench/elementary-lectures-electric-discharges-waves-impulses/",
        "visual_map": "/diagrams/source-visuals/elementary-lectures-electric-discharges-waves-impulses/",
        "formula_map": "/mathematics/source-formula-maps/elementary-lectures-electric-discharges-waves-impulses/",
        "archive": "https://archive.org/details/elementarylectur00steirich"
      }
    },
    {
      "source_id": "electric-discharges-waves-impulses-1914",
      "title": "Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients",
      "year": 1914,
      "sections": 10,
      "words": 34696,
      "equation_candidates": 54,
      "formula_candidates": 300,
      "figure_candidates": 18,
      "promoted_crops": 0,
      "modern_visual_guides": 5,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "transients",
          "label": "Transients / damping",
          "count": 573
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 497
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 411
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 331
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 250
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 124
        },
        {
          "id": "lightning-surges",
          "label": "Lightning / surges",
          "count": 119
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 48
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 93,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 19,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 17,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 13,
          "link": "/concept-concordance/wave-length/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 10,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "velocity-of-light",
          "label": "Velocity of light",
          "count": 4,
          "link": "/concept-concordance/velocity-of-light/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 1,
          "link": "/concept-concordance/radiation/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 19
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 13
        }
      ],
      "priority_sections": [
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-07",
          "label": "Lecture 7: Line Oscillations",
          "word_count": 3408,
          "equations": 8,
          "figures": 3,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-07/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-07/"
          }
        },
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-04",
          "label": "Lecture 4: Single-Energy Transients In Alternating Current Circuits",
          "word_count": 5659,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-04/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-04/"
          }
        },
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-06",
          "label": "Lecture 6: Double-Energy Transients",
          "word_count": 2822,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-06/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-06/"
          }
        },
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-02",
          "label": "Lecture 2: The Electric Field",
          "word_count": 2159,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-02/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-02/"
          }
        },
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-05",
          "label": "Lecture 5: Single-Energy Tra.Nsient Of Ironclad Circuit",
          "word_count": 1321,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-05/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-05/"
          }
        },
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-01",
          "label": "Lecture 1: Nature And Origin Of Transients",
          "word_count": 2710,
          "equations": 6,
          "figures": 3,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-01/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-01/"
          }
        },
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-03",
          "label": "Lecture 3: Single-Energy Transients In Continuous Current Circuits",
          "word_count": 2625,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-03/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-03/"
          }
        },
        {
          "id": "electric-discharges-waves-impulses-1914-lecture-10",
          "label": "Lecture 10: Continual And Cumulative Oscillations",
          "word_count": 6690,
          "equations": 0,
          "figures": 4,
          "quotes": 0,
          "links": {
            "source": "/source-texts/electric-discharges-waves-impulses-1914/lecture-10/",
            "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/lecture-10/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/electric-discharges-waves-impulses-1914/",
        "source_text": "/source-texts/electric-discharges-waves-impulses-1914/",
        "workbench": "/chapter-workbench/electric-discharges-waves-impulses-1914/",
        "visual_map": "/diagrams/source-visuals/electric-discharges-waves-impulses-1914/",
        "formula_map": "/mathematics/source-formula-maps/electric-discharges-waves-impulses-1914/",
        "archive": "https://archive.org/details/elementarylectur00stei"
      }
    },
    {
      "source_id": "engineering-mathematics",
      "title": "Engineering Mathematics: A Series of Lectures Delivered at Union College",
      "year": 1911,
      "sections": 6,
      "words": 54448,
      "equation_candidates": 8,
      "formula_candidates": 300,
      "figure_candidates": 9,
      "promoted_crops": 0,
      "modern_visual_guides": 6,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 114
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 99
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 75
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 75
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 57
        },
        {
          "id": "ether",
          "label": "Ether references",
          "count": 52
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 50
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 47
        }
      ],
      "concepts": [
        {
          "id": "ether",
          "label": "Ether",
          "count": 52,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 24,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 13,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 7,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "illumination",
          "label": "Illumination",
          "count": 5,
          "link": "/concept-concordance/illumination/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 5,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "arc-lamp",
          "label": "Arc lamp",
          "count": 2,
          "link": "/concept-concordance/arc-lamp/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 52
        },
        {
          "id": "electrostatic capacity",
          "label": "electrostatic capacity",
          "count": 1
        },
        {
          "id": "effective resistance",
          "label": "effective resistance",
          "count": 1
        }
      ],
      "priority_sections": [
        {
          "id": "engineering-mathematics-chapter-01",
          "label": "Chapter 1: The General Number",
          "word_count": 10319,
          "equations": 8,
          "figures": 4,
          "quotes": 0,
          "links": {
            "source": "/source-texts/engineering-mathematics/chapter-01/",
            "workbench": "/chapter-workbench/engineering-mathematics/chapter-01/"
          }
        },
        {
          "id": "engineering-mathematics-chapter-03",
          "label": "Chapter 3: Trigonometric Series",
          "word_count": 18269,
          "equations": 0,
          "figures": 5,
          "quotes": 0,
          "links": {
            "source": "/source-texts/engineering-mathematics/chapter-03/",
            "workbench": "/chapter-workbench/engineering-mathematics/chapter-03/"
          }
        },
        {
          "id": "engineering-mathematics-chapter-05",
          "label": "Chapter 6: Empirical Curves",
          "word_count": 7171,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/engineering-mathematics/chapter-05/",
            "workbench": "/chapter-workbench/engineering-mathematics/chapter-05/"
          }
        },
        {
          "id": "engineering-mathematics-chapter-06",
          "label": "Chapter 7: Numerical Calculations",
          "word_count": 7123,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/engineering-mathematics/chapter-06/",
            "workbench": "/chapter-workbench/engineering-mathematics/chapter-06/"
          }
        },
        {
          "id": "engineering-mathematics-chapter-02",
          "label": "Chapter 2: Potential Series And Exponential Function",
          "word_count": 7738,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/engineering-mathematics/chapter-02/",
            "workbench": "/chapter-workbench/engineering-mathematics/chapter-02/"
          }
        },
        {
          "id": "engineering-mathematics-chapter-04",
          "label": "Chapter 5: Methods Of Approximation",
          "word_count": 3828,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/engineering-mathematics/chapter-04/",
            "workbench": "/chapter-workbench/engineering-mathematics/chapter-04/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/engineering-mathematics/",
        "source_text": "/source-texts/engineering-mathematics/",
        "workbench": "/chapter-workbench/engineering-mathematics/",
        "visual_map": "/diagrams/source-visuals/engineering-mathematics/",
        "formula_map": "/mathematics/source-formula-maps/engineering-mathematics/",
        "archive": "https://archive.org/details/engineeringmathe00steirich"
      }
    },
    {
      "source_id": "four-lectures-relativity-space",
      "title": "Four Lectures on Relativity and Space",
      "year": 1923,
      "sections": 4,
      "words": 39381,
      "equation_candidates": 24,
      "formula_candidates": 170,
      "figure_candidates": 19,
      "promoted_crops": 0,
      "modern_visual_guides": 1,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "fields",
          "label": "Field language",
          "count": 283
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 182
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 110
        },
        {
          "id": "ether",
          "label": "Ether references",
          "count": 94
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 74
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 40
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 21
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 9
        }
      ],
      "concepts": [
        {
          "id": "light",
          "label": "Light",
          "count": 158,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 94,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "velocity-of-light",
          "label": "Velocity of light",
          "count": 31,
          "link": "/concept-concordance/velocity-of-light/"
        },
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 8,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 6,
          "link": "/concept-concordance/wave-length/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 5,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "spectrum",
          "label": "Spectrum",
          "count": 5,
          "link": "/concept-concordance/spectrum/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 2,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "electric-waves",
          "label": "Electric waves",
          "count": 1,
          "link": "/concept-concordance/electric-waves/"
        },
        {
          "id": "refraction",
          "label": "Refraction",
          "count": 1,
          "link": "/concept-concordance/refraction/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 94
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 6
        },
        {
          "id": "electric waves",
          "label": "electric waves",
          "count": 1
        }
      ],
      "priority_sections": [
        {
          "id": "four-lectures-relativity-space-lecture-04",
          "label": "Lecture 4: The Characteristics Of Space A. The Geometry Of The Gravitational Field",
          "word_count": 18408,
          "equations": 8,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/four-lectures-relativity-space/lecture-04/",
            "workbench": "/chapter-workbench/four-lectures-relativity-space/lecture-04/"
          }
        },
        {
          "id": "four-lectures-relativity-space-lecture-02",
          "label": "Lecture 2: Conclusions From The Relativity Theory",
          "word_count": 10298,
          "equations": 8,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/four-lectures-relativity-space/lecture-02/",
            "workbench": "/chapter-workbench/four-lectures-relativity-space/lecture-02/"
          }
        },
        {
          "id": "four-lectures-relativity-space-lecture-03",
          "label": "Lecture 3: Gravitation And The Gravitational Fleld",
          "word_count": 6716,
          "equations": 8,
          "figures": 5,
          "quotes": 0,
          "links": {
            "source": "/source-texts/four-lectures-relativity-space/lecture-03/",
            "workbench": "/chapter-workbench/four-lectures-relativity-space/lecture-03/"
          }
        },
        {
          "id": "four-lectures-relativity-space-lecture-01",
          "label": "Lecture 1: General",
          "word_count": 3959,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/four-lectures-relativity-space/lecture-01/",
            "workbench": "/chapter-workbench/four-lectures-relativity-space/lecture-01/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/four-lectures-relativity-space/",
        "source_text": "/source-texts/four-lectures-relativity-space/",
        "workbench": "/chapter-workbench/four-lectures-relativity-space/",
        "visual_map": "/diagrams/source-visuals/four-lectures-relativity-space/",
        "formula_map": "/mathematics/source-formula-maps/four-lectures-relativity-space/",
        "archive": "https://archive.org/details/fourlecturesonre00stei"
      }
    },
    {
      "source_id": "general-lectures-electrical-engineering",
      "title": "General Lectures on Electrical Engineering",
      "year": 1908,
      "sections": 17,
      "words": 61815,
      "equation_candidates": 89,
      "formula_candidates": 134,
      "figure_candidates": 14,
      "promoted_crops": 0,
      "modern_visual_guides": 2,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 961
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 274
        },
        {
          "id": "lightning-surges",
          "label": "Lightning / surges",
          "count": 271
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 263
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 119
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 113
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 90
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 89
        }
      ],
      "concepts": [
        {
          "id": "light",
          "label": "Light",
          "count": 572,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 142,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "illumination",
          "label": "Illumination",
          "count": 102,
          "link": "/concept-concordance/illumination/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 85,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 56,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "arc-lamp",
          "label": "Arc lamp",
          "count": 31,
          "link": "/concept-concordance/arc-lamp/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 31,
          "link": "/concept-concordance/wave-length/"
        },
        {
          "id": "spectrum",
          "label": "Spectrum",
          "count": 29,
          "link": "/concept-concordance/spectrum/"
        },
        {
          "id": "ultraviolet",
          "label": "Ultra-violet radiation",
          "count": 11,
          "link": "/concept-concordance/ultraviolet/"
        },
        {
          "id": "ultrared",
          "label": "Ultra-red radiation",
          "count": 5,
          "link": "/concept-concordance/ultrared/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 56
        },
        {
          "id": "candle-power",
          "label": "candle-power",
          "count": 45
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 31
        },
        {
          "id": "brilliancy",
          "label": "brilliancy",
          "count": 4
        },
        {
          "id": "mechanical equivalent of light",
          "label": "mechanical equivalent of light",
          "count": 1
        }
      ],
      "priority_sections": [
        {
          "id": "general-lectures-electrical-engineering-lecture-17",
          "label": "Lecture 17: Arc Lighting",
          "word_count": 20719,
          "equations": 8,
          "figures": 2,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-17/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-17/"
          }
        },
        {
          "id": "general-lectures-electrical-engineering-lecture-12",
          "label": "Lecture 12: Electric Railway",
          "word_count": 3175,
          "equations": 6,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-12/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-12/"
          }
        },
        {
          "id": "general-lectures-electrical-engineering-lecture-05",
          "label": "Lecture 5: Long Distance Transmission",
          "word_count": 2599,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-05/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-05/"
          }
        },
        {
          "id": "general-lectures-electrical-engineering-lecture-02",
          "label": "Lecture 2: General Distribution",
          "word_count": 2681,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-02/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-02/"
          }
        },
        {
          "id": "general-lectures-electrical-engineering-lecture-14",
          "label": "Lecture 14: Alternating Current Railway Motor",
          "word_count": 4794,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-14/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-14/"
          }
        },
        {
          "id": "general-lectures-electrical-engineering-lecture-03",
          "label": "Lecture 3: Light And Power Distribution",
          "word_count": 2515,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-03/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-03/"
          }
        },
        {
          "id": "general-lectures-electrical-engineering-lecture-07",
          "label": "Lecture 7: High Frequency Oscillations And Surges",
          "word_count": 1981,
          "equations": 7,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-07/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-07/"
          }
        },
        {
          "id": "general-lectures-electrical-engineering-lecture-06",
          "label": "Lecture 6: Higher Harmonics Of The Generator Wave",
          "word_count": 2674,
          "equations": 7,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/general-lectures-electrical-engineering/lecture-06/",
            "workbench": "/chapter-workbench/general-lectures-electrical-engineering/lecture-06/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/general-lectures-electrical-engineering/",
        "source_text": "/source-texts/general-lectures-electrical-engineering/",
        "workbench": "/chapter-workbench/general-lectures-electrical-engineering/",
        "visual_map": "/diagrams/source-visuals/general-lectures-electrical-engineering/",
        "formula_map": "/mathematics/source-formula-maps/general-lectures-electrical-engineering/",
        "archive": "https://archive.org/details/generallectureso00steiuoft"
      }
    },
    {
      "source_id": "commonwealth-edison-generating-system-trouble",
      "title": "Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co.",
      "year": 1919,
      "sections": 5,
      "words": 17784,
      "equation_candidates": 8,
      "formula_candidates": 220,
      "figure_candidates": 1,
      "promoted_crops": 0,
      "modern_visual_guides": 2,
      "quote_candidates": 5,
      "themes": [
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 106
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 62
        },
        {
          "id": "ether",
          "label": "Ether references",
          "count": 50
        },
        {
          "id": "transients",
          "label": "Transients / damping",
          "count": 27
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 23
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 16
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 13
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 1
        }
      ],
      "concepts": [
        {
          "id": "synchronism",
          "label": "Synchronism",
          "count": 135,
          "link": "/concept-concordance/synchronism/"
        },
        {
          "id": "synchronizing-power",
          "label": "Synchronizing power",
          "count": 35,
          "link": "/concept-concordance/synchronizing-power/"
        },
        {
          "id": "short-circuit",
          "label": "Short circuit",
          "count": 34,
          "link": "/concept-concordance/short-circuit/"
        },
        {
          "id": "synchronous-machines",
          "label": "Synchronous machines",
          "count": 32,
          "link": "/concept-concordance/synchronous-machines/"
        },
        {
          "id": "power-limiting-reactor",
          "label": "Power limiting reactor",
          "count": 17,
          "link": "/concept-concordance/power-limiting-reactor/"
        },
        {
          "id": "tie-cable",
          "label": "Tie cable",
          "count": 13,
          "link": "/concept-concordance/tie-cable/"
        },
        {
          "id": "circuit-breaker",
          "label": "Circuit breaker",
          "count": 5,
          "link": "/concept-concordance/circuit-breaker/"
        },
        {
          "id": "protective-reactance",
          "label": "Protective reactance",
          "count": 1,
          "link": "/concept-concordance/protective-reactance/"
        },
        {
          "id": "current-transformer",
          "label": "Current transformer",
          "count": 1,
          "link": "/concept-concordance/current-transformer/"
        },
        {
          "id": "hunting-pulsation",
          "label": "Hunting pulsation",
          "count": 1,
          "link": "/concept-concordance/hunting-pulsation/"
        }
      ],
      "glossary": [
        {
          "id": "synchronizing power",
          "label": "synchronizing power",
          "count": 35
        },
        {
          "id": "power limiting reactor",
          "label": "power limiting reactor",
          "count": 17
        },
        {
          "id": "tie cable",
          "label": "tie cable",
          "count": 13
        },
        {
          "id": "synchronous apparatus",
          "label": "synchronous apparatus",
          "count": 4
        },
        {
          "id": "power limiting reactance",
          "label": "power limiting reactance",
          "count": 4
        },
        {
          "id": "critical slip",
          "label": "critical slip",
          "count": 4
        },
        {
          "id": "feeder reactance",
          "label": "feeder reactance",
          "count": 2
        },
        {
          "id": "protective reactance",
          "label": "protective reactance",
          "count": 1
        }
      ],
      "priority_sections": [
        {
          "id": "commonwealth-edison-generating-system-trouble-appendix-01-synchronous-operation",
          "label": "Mathematical Appendix 5: Appendix: Synchronous Operation",
          "word_count": 8812,
          "equations": 8,
          "figures": 1,
          "quotes": 1,
          "links": {
            "source": "/source-texts/commonwealth-edison-generating-system-trouble/appendix-01-synchronous-operation/",
            "workbench": "/chapter-workbench/commonwealth-edison-generating-system-trouble/appendix-01-synchronous-operation/"
          }
        },
        {
          "id": "commonwealth-edison-generating-system-trouble-section-02-discussion-of-recommendations",
          "label": "Report Section 3: Discussion of Recommendations",
          "word_count": 1622,
          "equations": 0,
          "figures": 0,
          "quotes": 3,
          "links": {
            "source": "/source-texts/commonwealth-edison-generating-system-trouble/section-02-discussion-of-recommendations/",
            "workbench": "/chapter-workbench/commonwealth-edison-generating-system-trouble/section-02-discussion-of-recommendations/"
          }
        },
        {
          "id": "commonwealth-edison-generating-system-trouble-section-01-recommendations",
          "label": "Report Section 2: Recommendations",
          "word_count": 2384,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/commonwealth-edison-generating-system-trouble/section-01-recommendations/",
            "workbench": "/chapter-workbench/commonwealth-edison-generating-system-trouble/section-01-recommendations/"
          }
        },
        {
          "id": "commonwealth-edison-generating-system-trouble-section-03-record",
          "label": "Report Record 4: Record of Four Troubles",
          "word_count": 4341,
          "equations": 0,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/commonwealth-edison-generating-system-trouble/section-03-record/",
            "workbench": "/chapter-workbench/commonwealth-edison-generating-system-trouble/section-03-record/"
          }
        },
        {
          "id": "commonwealth-edison-generating-system-trouble-front-letter-01",
          "label": "Front Matter 1: Cover Letter to Samuel Insull",
          "word_count": 625,
          "equations": 0,
          "figures": 0,
          "quotes": 1,
          "links": {
            "source": "/source-texts/commonwealth-edison-generating-system-trouble/front-letter-01/",
            "workbench": "/chapter-workbench/commonwealth-edison-generating-system-trouble/front-letter-01/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/commonwealth-edison-generating-system-trouble/",
        "source_text": "/source-texts/commonwealth-edison-generating-system-trouble/",
        "workbench": "/chapter-workbench/commonwealth-edison-generating-system-trouble/",
        "visual_map": "/diagrams/source-visuals/commonwealth-edison-generating-system-trouble/",
        "formula_map": "/mathematics/source-formula-maps/commonwealth-edison-generating-system-trouble/",
        "archive": "https://github.com/TRUEMODELOFTHEWORLD/Steinmetz-Decoded/blob/main/sources/commonwealth-edison-generating-system-trouble/raw/commonwealth-edison-generating-system-trouble-local.pdf"
      }
    },
    {
      "source_id": "radiation-light-and-illumination",
      "title": "Radiation, Light and Illumination",
      "year": 1909,
      "sections": 13,
      "words": 86387,
      "equation_candidates": 74,
      "formula_candidates": 300,
      "figure_candidates": 98,
      "promoted_crops": 5,
      "modern_visual_guides": 2,
      "quote_candidates": 3,
      "themes": [
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 3314
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 348
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 290
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 54
        },
        {
          "id": "ether",
          "label": "Ether references",
          "count": 37
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 33
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 32
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 22
        }
      ],
      "concepts": [
        {
          "id": "light",
          "label": "Light",
          "count": 1658,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 785,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "illumination",
          "label": "Illumination",
          "count": 563,
          "link": "/concept-concordance/illumination/"
        },
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 122,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "spectrum",
          "label": "Spectrum",
          "count": 113,
          "link": "/concept-concordance/spectrum/"
        },
        {
          "id": "arc-lamp",
          "label": "Arc lamp",
          "count": 74,
          "link": "/concept-concordance/arc-lamp/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 72,
          "link": "/concept-concordance/wave-length/"
        },
        {
          "id": "luminescence",
          "label": "Luminescence",
          "count": 72,
          "link": "/concept-concordance/luminescence/"
        },
        {
          "id": "brilliancy",
          "label": "Brilliancy",
          "count": 62,
          "link": "/concept-concordance/brilliancy/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 37,
          "link": "/concept-concordance/ether/"
        }
      ],
      "glossary": [
        {
          "id": "ultra-violet",
          "label": "ultra-violet",
          "count": 89
        },
        {
          "id": "candle-power",
          "label": "candle-power",
          "count": 78
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 72
        },
        {
          "id": "brilliancy",
          "label": "brilliancy",
          "count": 62
        },
        {
          "id": "ether",
          "label": "ether",
          "count": 37
        },
        {
          "id": "ultra-red",
          "label": "ultra-red",
          "count": 27
        },
        {
          "id": "light flux density",
          "label": "light flux density",
          "count": 17
        },
        {
          "id": "flux of light",
          "label": "flux of light",
          "count": 16
        }
      ],
      "priority_sections": [
        {
          "id": "radiation-light-and-illumination-lecture-01",
          "label": "Lecture 1: Nature And Different Forms Of Radiation",
          "word_count": 5749,
          "equations": 8,
          "figures": 8,
          "quotes": 2,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-01/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-01/"
          }
        },
        {
          "id": "radiation-light-and-illumination-lecture-06",
          "label": "Lecture 6: Luminescence",
          "word_count": 10895,
          "equations": 8,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-06/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-06/"
          }
        },
        {
          "id": "radiation-light-and-illumination-lecture-10",
          "label": "Lecture 10: Light Flux And Distribution",
          "word_count": 7958,
          "equations": 8,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-10/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-10/"
          }
        },
        {
          "id": "radiation-light-and-illumination-lecture-02",
          "label": "Lecture 2: Relation Of Bodies To Radiation",
          "word_count": 5812,
          "equations": 8,
          "figures": 5,
          "quotes": 1,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-02/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-02/"
          }
        },
        {
          "id": "radiation-light-and-illumination-lecture-09",
          "label": "Lecture 9: Measurement Of Light And Radiation",
          "word_count": 6669,
          "equations": 8,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-09/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-09/"
          }
        },
        {
          "id": "radiation-light-and-illumination-lecture-03",
          "label": "Lecture 3: Physiological Effects Of Radiation",
          "word_count": 9087,
          "equations": 8,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-03/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-03/"
          }
        },
        {
          "id": "radiation-light-and-illumination-lecture-05",
          "label": "Lecture 5: Temperature Radiation",
          "word_count": 8675,
          "equations": 8,
          "figures": 4,
          "quotes": 0,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-05/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-05/"
          }
        },
        {
          "id": "radiation-light-and-illumination-lecture-08",
          "label": "Lecture 8: Arc Lamps And Arc Lighting",
          "word_count": 8747,
          "equations": 8,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/radiation-light-and-illumination/lecture-08/",
            "workbench": "/chapter-workbench/radiation-light-and-illumination/lecture-08/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/radiation-light-and-illumination/",
        "source_text": "/source-texts/radiation-light-and-illumination/",
        "workbench": "/chapter-workbench/radiation-light-and-illumination/",
        "visual_map": "/diagrams/source-visuals/radiation-light-and-illumination/",
        "formula_map": "/mathematics/source-formula-maps/radiation-light-and-illumination/",
        "archive": "https://archive.org/details/radiationlightil00steirich"
      }
    },
    {
      "source_id": "theoretical-elements-electrical-engineering",
      "title": "Theoretical Elements of Electrical Engineering",
      "year": 1915,
      "sections": 114,
      "words": 90757,
      "equation_candidates": 56,
      "formula_candidates": 300,
      "figure_candidates": 10,
      "promoted_crops": 0,
      "modern_visual_guides": 7,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 862
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 648
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 435
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 238
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 206
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 171
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 100
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 94
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 192,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 44,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 19,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 13,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 2,
          "link": "/concept-concordance/radiation/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 19
        }
      ],
      "priority_sections": [
        {
          "id": "theoretical-elements-electrical-engineering-section-07",
          "label": "Theory Section 7: Inductance in Alternating-current Circuits",
          "word_count": 1937,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-07/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-07/"
          }
        },
        {
          "id": "theoretical-elements-electrical-engineering-section-01",
          "label": "Theory Section 1: Magnetism and Electric Current",
          "word_count": 2193,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-01/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-01/"
          }
        },
        {
          "id": "theoretical-elements-electrical-engineering-section-04",
          "label": "Theory Section 4: Power and Effective Values",
          "word_count": 1332,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-04/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-04/"
          }
        },
        {
          "id": "theoretical-elements-electrical-engineering-section-03",
          "label": "Theory Section 3: Generation of E.m.f.",
          "word_count": 1002,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-03/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-03/"
          }
        },
        {
          "id": "theoretical-elements-electrical-engineering-section-06",
          "label": "Theory Section 6: Self-inductance of Continuous-current Circuits",
          "word_count": 1414,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-06/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-06/"
          }
        },
        {
          "id": "theoretical-elements-electrical-engineering-section-05",
          "label": "Theory Section 5: Self-inductance and Mutual Inductance",
          "word_count": 944,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-05/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-05/"
          }
        },
        {
          "id": "theoretical-elements-electrical-engineering-section-02",
          "label": "Theory Section 2: Magnetism and E.m.f.",
          "word_count": 623,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-02/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-02/"
          }
        },
        {
          "id": "theoretical-elements-electrical-engineering-section-19",
          "label": "Theory Section 19: Fields of Force",
          "word_count": 1678,
          "equations": 0,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theoretical-elements-electrical-engineering/section-19/",
            "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/section-19/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/theoretical-elements-electrical-engineering/",
        "source_text": "/source-texts/theoretical-elements-electrical-engineering/",
        "workbench": "/chapter-workbench/theoretical-elements-electrical-engineering/",
        "visual_map": "/diagrams/source-visuals/theoretical-elements-electrical-engineering/",
        "formula_map": "/mathematics/source-formula-maps/theoretical-elements-electrical-engineering/",
        "archive": "https://archive.org/details/theoreticalelect00steirich"
      }
    },
    {
      "source_id": "theory-calculation-alternating-current-phenomena-1897",
      "title": "Theory and Calculation of Alternating Current Phenomena",
      "year": 1897,
      "sections": 30,
      "words": 76757,
      "equation_candidates": 76,
      "formula_candidates": 300,
      "figure_candidates": 32,
      "promoted_crops": 0,
      "modern_visual_guides": 3,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 624
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 557
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 494
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 268
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 198
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 198
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 173
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 155
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 150,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 30,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 22,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 7,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "dielectric-constant",
          "label": "Dielectric constant",
          "count": 1,
          "link": "/concept-concordance/dielectric-constant/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 1,
          "link": "/concept-concordance/wave-length/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 30
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 1
        }
      ],
      "priority_sections": [
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-04",
          "label": "Chapter 4: Graphic Befrisxintation",
          "word_count": 3073,
          "equations": 8,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-04/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-04/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-08",
          "label": "Chapter 8: Capacity",
          "word_count": 4274,
          "equations": 8,
          "figures": 5,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-08/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-08/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-06",
          "label": "Chapter 6: Topographic Method",
          "word_count": 1684,
          "equations": 8,
          "figures": 4,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-06/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-06/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-09",
          "label": "Chapter 9: Kbsistanci: And Kbactance Of Transmission Iine8",
          "word_count": 3373,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-09/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-09/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-03",
          "label": "Chapter 3: Iiaw Of Eucctbo-Maonimc Induction",
          "word_count": 727,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-03/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-03/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-01",
          "label": "Chapter 1: Introduction",
          "word_count": 2333,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-01/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-01/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-05",
          "label": "Chapter 5: Symbouc Mbthod",
          "word_count": 2030,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-05/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-05/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1897-chapter-07",
          "label": "Chapter 7: Admittance, Conductance, Susceftance",
          "word_count": 1238,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1897/chapter-07/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/chapter-07/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/theory-calculation-alternating-current-phenomena-1897/",
        "source_text": "/source-texts/theory-calculation-alternating-current-phenomena-1897/",
        "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1897/",
        "visual_map": "/diagrams/source-visuals/theory-calculation-alternating-current-phenomena-1897/",
        "formula_map": "/mathematics/source-formula-maps/theory-calculation-alternating-current-phenomena-1897/",
        "archive": "https://archive.org/details/theoryandcalcul03steigoog"
      }
    },
    {
      "source_id": "theory-calculation-alternating-current-phenomena-1900",
      "title": "Theory and Calculation of Alternating Current Phenomena",
      "year": 1900,
      "sections": 32,
      "words": 91217,
      "equation_candidates": 64,
      "formula_candidates": 300,
      "figure_candidates": 91,
      "promoted_crops": 0,
      "modern_visual_guides": 4,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 776
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 682
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 654
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 392
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 277
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 276
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 238
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 207
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 247,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 35,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 27,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 8,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 3,
          "link": "/concept-concordance/wave-length/"
        },
        {
          "id": "dielectric-constant",
          "label": "Dielectric constant",
          "count": 1,
          "link": "/concept-concordance/dielectric-constant/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 35
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 3
        }
      ],
      "priority_sections": [
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-04",
          "label": "Chapter 4: Graphic Representation",
          "word_count": 3152,
          "equations": 8,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-04/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-04/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-08",
          "label": "Chapter 8: Circuits Containing Resistance, Inductance, And Capacity",
          "word_count": 4195,
          "equations": 8,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-08/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-08/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-06",
          "label": "Chapter 6: Topographic Method",
          "word_count": 1850,
          "equations": 8,
          "figures": 7,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-06/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-06/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-05",
          "label": "Chapter 5: Symbolic Method",
          "word_count": 1993,
          "equations": 8,
          "figures": 3,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-05/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-05/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-02",
          "label": "Chapter 2: Instantaneous Values And Integral Values",
          "word_count": 895,
          "equations": 8,
          "figures": 2,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-02/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-02/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-03",
          "label": "Chapter 3: Law Of Electro-Magnetic Induction",
          "word_count": 724,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-03/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-03/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-01",
          "label": "Chapter 1: Introduction",
          "word_count": 2368,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-01/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-01/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-1900-chapter-07",
          "label": "Chapter 7: Admittance, Conductance, Susceptance",
          "word_count": 1254,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena-1900/chapter-07/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/chapter-07/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/theory-calculation-alternating-current-phenomena-1900/",
        "source_text": "/source-texts/theory-calculation-alternating-current-phenomena-1900/",
        "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena-1900/",
        "visual_map": "/diagrams/source-visuals/theory-calculation-alternating-current-phenomena-1900/",
        "formula_map": "/mathematics/source-formula-maps/theory-calculation-alternating-current-phenomena-1900/",
        "archive": "https://archive.org/details/theorycalculatio00steiiala"
      }
    },
    {
      "source_id": "theory-calculation-alternating-current-phenomena",
      "title": "Theory and Calculation of Alternating Current Phenomena",
      "year": 1916,
      "sections": 37,
      "words": 109539,
      "equation_candidates": 72,
      "formula_candidates": 300,
      "figure_candidates": 145,
      "promoted_crops": 4,
      "modern_visual_guides": 8,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 1066
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 826
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 800
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 453
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 386
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 313
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 251
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 244
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 210,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 41,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 30,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 10,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 3,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "velocity-of-light",
          "label": "Velocity of light",
          "count": 2,
          "link": "/concept-concordance/velocity-of-light/"
        },
        {
          "id": "dielectric-constant",
          "label": "Dielectric constant",
          "count": 2,
          "link": "/concept-concordance/dielectric-constant/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 1,
          "link": "/concept-concordance/wave-length/"
        }
      ],
      "glossary": [
        {
          "id": "counter e.m.f.",
          "label": "counter e.m.f.",
          "count": 70
        },
        {
          "id": "ether",
          "label": "ether",
          "count": 41
        },
        {
          "id": "effective resistance",
          "label": "effective resistance",
          "count": 33
        },
        {
          "id": "electrostatic capacity",
          "label": "electrostatic capacity",
          "count": 1
        },
        {
          "id": "wave length",
          "label": "wave length",
          "count": 1
        }
      ],
      "priority_sections": [
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-06",
          "label": "Chapter 6: Topographic Method",
          "word_count": 1780,
          "equations": 8,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-06/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-06/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-09",
          "label": "Chapter 9: Circuits Containing Resistance, Inductive Reactance, And Condensive Reactance",
          "word_count": 3916,
          "equations": 8,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-09/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-09/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-07",
          "label": "Chapter 7: Polar Coordinates And Polar Diagrams",
          "word_count": 2051,
          "equations": 8,
          "figures": 7,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-07/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-07/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-04",
          "label": "Chapter 4: Vector Representation",
          "word_count": 3435,
          "equations": 8,
          "figures": 4,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-04/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-04/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-02",
          "label": "Chapter 2: Instantaneous Values And Integral Values",
          "word_count": 1100,
          "equations": 8,
          "figures": 2,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-02/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-02/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-05",
          "label": "Chapter 5: Symbolic Method",
          "word_count": 2253,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-05/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-05/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-01",
          "label": "Chapter 1: Introduction",
          "word_count": 2869,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-01/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-01/"
          }
        },
        {
          "id": "theory-calculation-alternating-current-phenomena-chapter-08",
          "label": "Chapter 8: Admittance, Conductance, Susceptance",
          "word_count": 1363,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-alternating-current-phenomena/chapter-08/",
            "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/chapter-08/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/theory-calculation-alternating-current-phenomena/",
        "source_text": "/source-texts/theory-calculation-alternating-current-phenomena/",
        "workbench": "/chapter-workbench/theory-calculation-alternating-current-phenomena/",
        "visual_map": "/diagrams/source-visuals/theory-calculation-alternating-current-phenomena/",
        "formula_map": "/mathematics/source-formula-maps/theory-calculation-alternating-current-phenomena/",
        "archive": "https://archive.org/details/5edtheorycalculatisteiuoft"
      }
    },
    {
      "source_id": "theory-calculation-electric-apparatus",
      "title": "Theory and Calculation of Electric Apparatus",
      "year": 1917,
      "sections": 22,
      "words": 118262,
      "equation_candidates": 24,
      "formula_candidates": 300,
      "figure_candidates": 13,
      "promoted_crops": 0,
      "modern_visual_guides": 2,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 870
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 677
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 556
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 511
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 190
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 189
        },
        {
          "id": "alternating-current",
          "label": "Alternating current",
          "count": 162
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 151
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 518,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 36,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 34,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "illumination",
          "label": "Illumination",
          "count": 1,
          "link": "/concept-concordance/illumination/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 1,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 1,
          "link": "/concept-concordance/permeability/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 34
        }
      ],
      "priority_sections": [
        {
          "id": "theory-calculation-electric-apparatus-chapter-03",
          "label": "Chapter 4: Induction Motor With Secondary Excitation",
          "word_count": 9778,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-03/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-03/"
          }
        },
        {
          "id": "theory-calculation-electric-apparatus-chapter-02",
          "label": "Chapter 2: Multiple Squirrel-Cage Induction Motor",
          "word_count": 5213,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-02/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-02/"
          }
        },
        {
          "id": "theory-calculation-electric-apparatus-chapter-01",
          "label": "Chapter 1: Speed Control Of Induction Motors",
          "word_count": 6386,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-01/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-01/"
          }
        },
        {
          "id": "theory-calculation-electric-apparatus-chapter-18",
          "label": "Chapter 20: Single-Phase Commutator Motors",
          "word_count": 23780,
          "equations": 0,
          "figures": 5,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-18/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-18/"
          }
        },
        {
          "id": "theory-calculation-electric-apparatus-chapter-17",
          "label": "Chapter 19: Alternating- Current Motors In General",
          "word_count": 6936,
          "equations": 0,
          "figures": 3,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-17/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-17/"
          }
        },
        {
          "id": "theory-calculation-electric-apparatus-chapter-20",
          "label": "Chapter 22: Unipolar Machines",
          "word_count": 2788,
          "equations": 0,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-20/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-20/"
          }
        },
        {
          "id": "theory-calculation-electric-apparatus-chapter-12",
          "label": "Chapter 14: Phase Conversion And Single-Phase Generation",
          "word_count": 6188,
          "equations": 0,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-12/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-12/"
          }
        },
        {
          "id": "theory-calculation-electric-apparatus-chapter-14",
          "label": "Chapter 16: Reaction Machines",
          "word_count": 3527,
          "equations": 0,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-apparatus/chapter-14/",
            "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/chapter-14/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/theory-calculation-electric-apparatus/",
        "source_text": "/source-texts/theory-calculation-electric-apparatus/",
        "workbench": "/chapter-workbench/theory-calculation-electric-apparatus/",
        "visual_map": "/diagrams/source-visuals/theory-calculation-electric-apparatus/",
        "formula_map": "/mathematics/source-formula-maps/theory-calculation-electric-apparatus/",
        "archive": "https://archive.org/details/theoryandcalcul04steigoog"
      }
    },
    {
      "source_id": "theory-calculation-electric-circuits",
      "title": "Theory and Calculation of Electric Circuits",
      "year": 1917,
      "sections": 18,
      "words": 83211,
      "equation_candidates": 48,
      "formula_candidates": 300,
      "figure_candidates": 37,
      "promoted_crops": 0,
      "modern_visual_guides": 5,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 1035
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 594
        },
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 454
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 210
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 205
        },
        {
          "id": "transients",
          "label": "Transients / damping",
          "count": 175
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 128
        },
        {
          "id": "hysteresis",
          "label": "Hysteresis",
          "count": 100
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 79,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 39,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 30,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 7,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 5,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "arc-lamp",
          "label": "Arc lamp",
          "count": 5,
          "link": "/concept-concordance/arc-lamp/"
        },
        {
          "id": "luminescence",
          "label": "Luminescence",
          "count": 4,
          "link": "/concept-concordance/luminescence/"
        },
        {
          "id": "illumination",
          "label": "Illumination",
          "count": 2,
          "link": "/concept-concordance/illumination/"
        },
        {
          "id": "spectrum",
          "label": "Spectrum",
          "count": 1,
          "link": "/concept-concordance/spectrum/"
        }
      ],
      "glossary": [
        {
          "id": "ether",
          "label": "ether",
          "count": 30
        }
      ],
      "priority_sections": [
        {
          "id": "theory-calculation-electric-circuits-chapter-01",
          "label": "Chapter 1: Electric Conduction. Soled And Liquid",
          "word_count": 6860,
          "equations": 8,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-01/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-01/"
          }
        },
        {
          "id": "theory-calculation-electric-circuits-chapter-04",
          "label": "Chapter 4: Magnetism",
          "word_count": 4132,
          "equations": 8,
          "figures": 4,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-04/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-04/"
          }
        },
        {
          "id": "theory-calculation-electric-circuits-chapter-02",
          "label": "Chapter 2: Electric Conduction. Gas And Vapor",
          "word_count": 3991,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-02/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-02/"
          }
        },
        {
          "id": "theory-calculation-electric-circuits-chapter-06",
          "label": "Chapter 6: Magnetism",
          "word_count": 4468,
          "equations": 8,
          "figures": 1,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-06/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-06/"
          }
        },
        {
          "id": "theory-calculation-electric-circuits-chapter-05",
          "label": "Chapter 5: Magnetism",
          "word_count": 3661,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-05/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-05/"
          }
        },
        {
          "id": "theory-calculation-electric-circuits-chapter-03",
          "label": "Chapter 3: Magnetism",
          "word_count": 3495,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-03/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-03/"
          }
        },
        {
          "id": "theory-calculation-electric-circuits-chapter-10",
          "label": "Chapter 10: Instability Of Circuits : The Arc",
          "word_count": 9446,
          "equations": 0,
          "figures": 8,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-10/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-10/"
          }
        },
        {
          "id": "theory-calculation-electric-circuits-chapter-14",
          "label": "Chapter 14: Constant-Potential Constant-Current Trans Formation",
          "word_count": 11556,
          "equations": 0,
          "figures": 6,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-electric-circuits/chapter-14/",
            "workbench": "/chapter-workbench/theory-calculation-electric-circuits/chapter-14/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/theory-calculation-electric-circuits/",
        "source_text": "/source-texts/theory-calculation-electric-circuits/",
        "workbench": "/chapter-workbench/theory-calculation-electric-circuits/",
        "visual_map": "/diagrams/source-visuals/theory-calculation-electric-circuits/",
        "formula_map": "/mathematics/source-formula-maps/theory-calculation-electric-circuits/",
        "archive": "https://archive.org/details/theoryandcalcul06steigoog"
      }
    },
    {
      "source_id": "theory-calculation-transient-electric-phenomena-oscillations",
      "title": "Theory and Calculation of Transient Electric Phenomena and Oscillations",
      "year": 1909,
      "sections": 58,
      "words": 109824,
      "equation_candidates": 101,
      "formula_candidates": 300,
      "figure_candidates": 1,
      "promoted_crops": 6,
      "modern_visual_guides": 4,
      "quote_candidates": 0,
      "themes": [
        {
          "id": "waves-lines",
          "label": "Waves / transmission lines",
          "count": 1375
        },
        {
          "id": "transients",
          "label": "Transients / damping",
          "count": 947
        },
        {
          "id": "dielectricity",
          "label": "Dielectricity / capacity",
          "count": 700
        },
        {
          "id": "magnetism",
          "label": "Magnetism",
          "count": 649
        },
        {
          "id": "fields",
          "label": "Field language",
          "count": 616
        },
        {
          "id": "radiation-light",
          "label": "Radiation / light",
          "count": 611
        },
        {
          "id": "impedance-reactance",
          "label": "Impedance / reactance",
          "count": 268
        },
        {
          "id": "complex-quantities",
          "label": "Complex quantities",
          "count": 221
        }
      ],
      "concepts": [
        {
          "id": "frequency",
          "label": "Frequency",
          "count": 369,
          "link": "/concept-concordance/frequency/"
        },
        {
          "id": "wave-length",
          "label": "Wave length",
          "count": 111,
          "link": "/concept-concordance/wave-length/"
        },
        {
          "id": "light",
          "label": "Light",
          "count": 95,
          "link": "/concept-concordance/light/"
        },
        {
          "id": "radiation",
          "label": "Radiation",
          "count": 36,
          "link": "/concept-concordance/radiation/"
        },
        {
          "id": "ether",
          "label": "Ether",
          "count": 19,
          "link": "/concept-concordance/ether/"
        },
        {
          "id": "permeability",
          "label": "Magnetic permeability",
          "count": 15,
          "link": "/concept-concordance/permeability/"
        },
        {
          "id": "refraction",
          "label": "Refraction",
          "count": 11,
          "link": "/concept-concordance/refraction/"
        },
        {
          "id": "dielectric-constant",
          "label": "Dielectric constant",
          "count": 6,
          "link": "/concept-concordance/dielectric-constant/"
        },
        {
          "id": "velocity-of-light",
          "label": "Velocity of light",
          "count": 5,
          "link": "/concept-concordance/velocity-of-light/"
        },
        {
          "id": "ultraviolet",
          "label": "Ultra-violet radiation",
          "count": 3,
          "link": "/concept-concordance/ultraviolet/"
        }
      ],
      "glossary": [
        {
          "id": "wave length",
          "label": "wave length",
          "count": 111
        },
        {
          "id": "ether",
          "label": "ether",
          "count": 19
        },
        {
          "id": "ultra-red",
          "label": "ultra-red",
          "count": 1
        }
      ],
      "priority_sections": [
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-24",
          "label": "Chapter 2: Introduction",
          "word_count": 2603,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-24/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-24/"
          }
        },
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-23",
          "label": "Chapter 1: The Constants Of The Electric Circuit",
          "word_count": 3601,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-23/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-23/"
          }
        },
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-25",
          "label": "Chapter 3: Inductance And Resistance In Continuous Current Circuits",
          "word_count": 3220,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-25/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-25/"
          }
        },
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-26",
          "label": "Chapter 4: Inductance And Resistance In Alternating Current Circuits",
          "word_count": 896,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-26/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-26/"
          }
        },
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-12",
          "label": "Chapter 8: Velocity Of Propagation Op Electric Field. 387",
          "word_count": 112,
          "equations": 8,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-12/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-12/"
          }
        },
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-06",
          "label": "Chapter 2: Long Distance Transmission Line. 279",
          "word_count": 226,
          "equations": 7,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-06/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-06/"
          }
        },
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-19",
          "label": "Chapter 6: Transition Points And The Complex Circuit. 498",
          "word_count": 94,
          "equations": 6,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-19/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-19/"
          }
        },
        {
          "id": "theory-calculation-transient-electric-phenomena-oscillations-chapter-15",
          "label": "Chapter 2: Discussion Of General Equations. 431",
          "word_count": 64,
          "equations": 5,
          "figures": 0,
          "quotes": 0,
          "links": {
            "source": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/chapter-15/",
            "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/chapter-15/"
          }
        }
      ],
      "links": {
        "coverage": "/book-coverage/theory-calculation-transient-electric-phenomena-oscillations/",
        "source_text": "/source-texts/theory-calculation-transient-electric-phenomena-oscillations/",
        "workbench": "/chapter-workbench/theory-calculation-transient-electric-phenomena-oscillations/",
        "visual_map": "/diagrams/source-visuals/theory-calculation-transient-electric-phenomena-oscillations/",
        "formula_map": "/mathematics/source-formula-maps/theory-calculation-transient-electric-phenomena-oscillations/",
        "archive": "https://archive.org/details/transelectricphenom00steirich"
      }
    }
  ]
}