{
  "annotation_id": "22cbe6a3-0865-4c53-ba19-a93dd4d8c929",
  "date_created": "2026-03-02T18:01:14.464000Z",
  "date_modified": "2026-03-02T18:01:14.464000Z",
  "file_hash": "426113eebe66fe0bcff3666e4867e3699b8883bf48b0d47ed5c5f8a72ff51333",
  "private": false,
  "record": {
    "abstract": "In this paper we express the retarded fields of Maxwell\u0027s theory in terms of\nthe instantaneous fields of a Galilei-invariant electromagnetic and we find the\nvector function whose spatial and temporal derivatives transform the\ninstantaneous fields into the retarded ones. We conclude that the instantaneous\nfields can formally be introduced as unphysical objects into classical\nelectrodynamics which can be used to find the physical retarded fields.",
    "arxiv_id": "physics/0701007",
    "authors": [
      "Jose A. Heras"
    ],
    "categories": [
      "physics.class-ph"
    ],
    "doi": "10.1209/epl/i2004-10318-y",
    "journal_ref": "Europhys. Letts. 69, 1-7 (2005)",
    "title": "Instantaneous fields in classical electrodynamics",
    "url": "https://arxiv.org/abs/physics/0701007"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d7e8827e-f5b3-44ed-8031-0b242b24d069",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}