{
  "annotation_id": "452e1d61-99b6-4ed0-9a60-f98438b89d58",
  "date_created": "2026-03-02T18:00:42.738000Z",
  "date_modified": "2026-03-02T18:00:42.738000Z",
  "file_hash": "71cdc0c71d918515a08f2cea21208300404784e3c2b85dace7908de972c25e73",
  "private": false,
  "record": {
    "abstract": "Brownian motion is the perpetual irregular motion exhibited by small\nparticles immersed in a fluid. Such random motion of the particles is produced\nby statistical fluctuations in the collisions they suffer with the molecules of\nthe surrounding fluid. Brownian motion of particles in a fluid (like milk\nparticles in water) can be observed under a microscope. Here we describe a\nsimple experimental set-up to observe Brownian motion and a method of\ndetermining the diffusion coefficient of the Brownian particles, based on a\ntheory due to Smoluchowski. While looking through the microscope we focus\nattention on a fixed small volume, and record the number of particles that are\ntrapped in that volume, at regular intervals of time. This gives us a\ntime-series data, which is enough to determine the diffusion coefficient of the\nparticles to a good degree of accuracy.",
    "arxiv_id": "physics/0303064",
    "authors": [
      "Kasturi Basu",
      "Kopinjol Baishya"
    ],
    "categories": [
      "physics.ed-ph"
    ],
    "journal_ref": "Resonance Vol. 8, No. 3, 71-80, March 2003",
    "title": "Brownian Motion: Theory and Experiment:: A simple Classroom Measurement   of the Diffusion Coefficient",
    "url": "https://arxiv.org/abs/physics/0303064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1e0ba125-3b7c-4176-97ea-2ffe045b68de",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}