{
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  "docId": "10.5594-J10095",
  "document": {
    "abbrevTitle": "J SMPE",
    "abbrevTitle$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "abstract": "Special slide-changing projectors were designed and built for the Kodachrome exhibit in the Eastman building at the New York World's Fair. Eleven machines are synchronized so that panoramic scenes one hundred and eighty-seven feet long may be shown. Indexing of the slides is controlled by notches in a sound-film so that the entire program is automatic. The slides in each machine are arranged in two rows, and the machines each have two gates and two complete optical systems. All the slides in one row are rigidly bolted to a ring-gear forty-eight inches in diameter. For each new picture one of the two ring-gears is spring-indexed into a new position. An optical compensator geared to the ring-gear corrects for any inaccuracies in indexing, and the image is optically “dowelled” on the screen.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "articleType": "research-article",
    "articleType$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "authors": [
      "Fordyce Tuttle"
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
      "holder$meta": {
        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
      },
      "year": "1940",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
      }
    },
    "copyright$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "docId": "10.5594-J10095",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from DOI 10.5594/J10095",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "docLabel": "Journal of the Society of Motion Picture Engineers ( Volume: 34, Issue: 3, March 1940)",
    "docLabel$meta": {
      "confidence": "medium",
      "note": "Composed from journal title, volume, issue and date",
      "source": "inferred",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "docTitle": "Automatic Slide Projectors for the New York World's Fair",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "docType": "Journal Article",
    "docType$meta": {
      "confidence": "high",
      "note": "NLM <article> — SMPTE journal paper",
      "source": "inferred",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "doi": "10.5594/J10095",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "href": "https://doi.org/10.5594/J10095",
    "href$meta": {
      "confidence": "high",
      "note": "Constructed from DOI 10.5594/J10095",
      "source": "inferred",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "issn": {
      "print": "0097-5834",
      "print$meta": {
        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
      }
    },
    "issn$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "journalAcronym": "MIJR",
    "journalAcronym$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08202015 BACKFILE JOURNAL FRESH/smptej_34_3/MIJR15Vol34No3.xml)",
      "source": "parsed",
      "updated": "2026-06-16T18:14:32.753Z",
      "version": "smpte-journal-issue-xml@v1"
    },
    "number": "3",
    "number$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "pages": "265–271",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "publicationDate": "1940-03-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Day absent in NLM source — padded to 01",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "high",
      "note": "Normalised to registry \"SMPTE\" convention from NLM publisher-name (The Society of Motion Picture and Television Engineers)",
      "source": "inferred",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "publisherLocation": {
      "city": "White Plains, NY",
      "city$meta": {
        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
        "source": "parsed",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
      },
      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08202015 BACKFILE JOURNAL FRESH/smptej_34_3/MIJR15Vol34No3.xml)",
        "source": "parsed",
        "updated": "2026-06-16T18:14:32.753Z",
        "version": "smpte-journal-issue-xml@v1"
      }
    },
    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "medium",
        "note": "No explicit status in NLM source — journal articles default active",
        "source": "inferred",
        "updated": "2026-05-22T19:19:44.900Z",
        "version": "smpte-journal-article-nlm@v1"
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    },
    "volume": "34",
    "volume$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J10095.xml)",
      "source": "parsed",
      "updated": "2026-05-22T19:19:44.900Z",
      "version": "smpte-journal-article-nlm@v1"
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}