{
 "id": "source/commons-biruni-earth-geometry",
 "class": "source",
 "slug": "commons-biruni-earth-geometry",
 "label": {
  "ar": "بيانات رسم نيفيت ديلمن لهندسة قياس الأرض",
  "en": "Nevit Dilmen Earth-measurement geometry metadata",
  "ur": "نیوت دلمن کی زمین کی پیمائش کے ہندسے کے کوائف"
 },
 "summary": {
  "ar": "رسم هندسي حديث2010 بترخيص CC BY-SA3.0؛ بياناته تثبت الصانع والرخصة لا دقة قياس تاريخي.",
  "en": "Modern2010 CC BY-SA3.0 geometry illustration; metadata establishes creator/licence, not historical measurement accuracy.",
  "ur": "2010 کا جدید CC BY-SA3.0 ہندسی خاکہ؛ کوائف خالق اور اجازت ثابت کرتے ہیں، تاریخی پیمائش کی صحت نہیں۔"
 },
 "stub": false,
 "wings": [],
 "regions": [],
 "periods": [],
 "tags": [],
 "aliases": [],
 "themes": [],
 "data": {
  "kind": "primary",
  "type": "website",
  "title": "File:Abu Reyhan Biruni-Earth Circumference.svg",
  "author": [
   {
    "literal": "Nevit Dilmen"
   }
  ],
  "publisher": "Wikimedia Commons",
  "language": "en",
  "URL": "https://commons.wikimedia.org/wiki/File:Abu_Reyhan_Biruni-Earth_Circumference.svg",
  "open_access": true,
  "reliability_note": "Actual creator/date/description/CC BY-SA3.0 metadata and full rendered original SVG inspected2026-11-06. Author's2010 own work using GeoGebra/Inkscape; unchanged reuse, licence https://creativecommons.org/licenses/by-sa/3.0. Diagram shows summitA, footB, tangent contactC, centreO, height h, radius r and dip alpha, with exaggerated non-scale geometry. Commons prose's kilometre/error claims and two-ground-station height account are not adopted as historical evidence; primary translation describes a square-plate height procedure.",
  "status": {
   "review": "published",
   "completeness": 2,
   "generated_by": "Copilot SDK in VS Code"
  },
  "provenance": {
   "generated_by": "Copilot SDK in VS Code",
   "model": "unknown",
   "run": "inventions-p3-b28",
   "source": "Actual image description/licence metadata and visual inspection; not a historical authority for accompanying claims"
  }
 },
 "prose": {},
 "degree": 0,
 "contemporaries": [],
 "updated": "2026-11-05",
 "connections": [],
 "related": [],
 "license": {
  "prose": "CC BY-SA 4.0",
  "data": "CC0 1.0"
 }
}