{
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  "document": {
    "abstract": "THE illumination on the screen from a motion picture projector is dependent mainly on two things: the source of light and the method of utilizing the light from this source. This statement sounds, off hand, as though it gave opportunity for limitless discussion and tabulation of numerous light sources and optical arrangements; but a glance at the history of motion picture projection shows quite the opposite.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "articleType": "orig-research",
    "articleType$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "authors": [
      "P. R. Bassett"
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
      "holder$meta": {
        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
        "source": "parsed",
        "updated": "2026-05-22T23:54:08.922Z",
        "version": "smpte-journal-issue-xml@v1"
      },
      "year": "1924",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
        "source": "parsed",
        "updated": "2026-05-22T23:54:08.922Z",
        "version": "smpte-journal-issue-xml@v1"
      }
    },
    "copyright$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
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    "docId": "10.5594-jj00038",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from DOI 10.5594/jj00038",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "docLabel": "Transactions of the Society of Motion Picture Engineers ( Volume: 8, Issue: 18, May 1924)",
    "docLabel$meta": {
      "confidence": "medium",
      "note": "Composed from journal title, volume, issue and date",
      "source": "inferred",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "docTitle": "The Progress of Arc Projection Efficiency",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "docType": "Journal Article",
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      "confidence": "high",
      "note": "journal_metadata XML — SMPTE journal paper",
      "source": "inferred",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
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    "doi": "10.5594/jj00038",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "href": "https://doi.org/10.5594/jj00038",
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      "confidence": "high",
      "note": "Constructed from DOI 10.5594/jj00038",
      "source": "inferred",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "issn": {
      "print": "0096-6460",
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        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
        "source": "parsed",
        "updated": "2026-05-22T23:54:08.922Z",
        "version": "smpte-journal-issue-xml@v1"
      }
    },
    "issn$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "journalAcronym": "MIJR",
    "journalAcronym$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "number": "18",
    "number$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "pages": "24–36",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "publicationDate": "1924-05-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Day absent in source — padded to 01",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "high",
      "note": "Normalised to registry \"SMPTE\" convention from publisher-name (SMPTE)",
      "source": "inferred",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "publisherLocation": {
      "city": "White Plains, NY",
      "city$meta": {
        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
        "source": "parsed",
        "updated": "2026-05-22T23:54:08.922Z",
        "version": "smpte-journal-issue-xml@v1"
      },
      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
        "source": "parsed",
        "updated": "2026-05-22T23:54:08.922Z",
        "version": "smpte-journal-issue-xml@v1"
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    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Mapped from article_status=\"active\"",
        "source": "parsed",
        "updated": "2026-05-22T23:54:08.922Z",
        "version": "smpte-journal-issue-xml@v1"
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    "volume": "8",
    "volume$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/METADATA and PDFs ALL CONTENT/Journal/smptej_8_18/MIJR16Vol8No18.xml)",
      "source": "parsed",
      "updated": "2026-05-22T23:54:08.922Z",
      "version": "smpte-journal-issue-xml@v1"
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}