{
  "annotation_id": "8ed8fa61-cde0-4f69-aee8-b2ffa00498b1",
  "date_created": "2026-03-02T18:01:14.927000Z",
  "date_modified": "2026-03-02T18:01:14.927000Z",
  "file_hash": "53d88ac70f5f691beb96a7fe5aea1d27d8c6b3eef32d8ae451019959878de38e",
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  "record": {
    "abstract": "In this paper we describe a simple conceptual problem, regarding the actual\nposition of the Sun at sunset or sunrise. Although this problem can be easily\nexplained in terms of rotating frames of references and standard Coriolis\nEffect, it is sometimes misunderstood by students and even by some physics\ntextbooks. We also present a simple experimental activity which can be used as\na demonstration of this peculiar kinematical effect in general physics courses,\nor become part of laboratory activities.",
    "arxiv_id": "physics/0612074",
    "authors": [
      "Gabriele U. Varieschi"
    ],
    "categories": [
      "physics.class-ph",
      "physics.ed-ph"
    ],
    "doi": "10.1088/0031-9120/43/01/007",
    "journal_ref": "Phys.Educ.43:68-74,2008",
    "title": "Eight Minutes and a Half",
    "url": "https://arxiv.org/abs/physics/0612074"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "82667bed-7835-4ce8-b9ef-d6c75906a940",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}