{
  "annotation_id": "5f00ddf6-f8c8-4ff8-bfb2-cc79f0f26f9d",
  "date_created": "2026-03-02T18:00:56.436000Z",
  "date_modified": "2026-03-02T18:00:56.436000Z",
  "file_hash": "c99f2cdb430cc08c8f8e28ac2bc02de1847c2fcb2e5273d11bfebc56bf3e77cc",
  "private": false,
  "record": {
    "abstract": "The non-spherical shape of the Sun has been invoked to explain the anomalous\nprecession of Mercury. A brief history of some methods for measuring solar\ndiameter is presented. Archimedes was the first to give upper and lower values\nfor solar diameter in third century before Christ; we also show the method of\ntotal eclipses, used after Halley\u0027s observative campaign of 1715 eclipse; the\nvariant of partial eclipses useful to measure different chords of the solar\ndisk; the method of Dicke which correlates oblateness with luminous excess in\nthe equatorial zone.",
    "arxiv_id": "physics/0501083",
    "authors": [
      "Costantino Sigismondi",
      "Pietro Oliva"
    ],
    "categories": [
      "physics.hist-ph"
    ],
    "doi": "10.1393/ncb/i2005-10147-7",
    "title": "Solar Oblateness from Archimedes to Dicke",
    "url": "https://arxiv.org/abs/physics/0501083"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "95f20a71-1a63-4aef-8d80-aa7664ae5915",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}