{
  "name": "Atoms side by side across a hair, a sand grain, an E. coli cell and a light microscope's finest detail",
  "desc": "Widths divided by atom sizes: route A with atoms of 0.1–0.5 nm, route B with the 0.215–0.282 nm of room each atom takes up in water, gold and salt.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "Ants, Cells & Atoms",
  "url": "https://antscellsandatoms.com/scale/atom-size/",
  "from": [
    "media/reference-objects.csv (shared file)",
    "media/cell-sizes.csv (shared file; E. coli width row)",
    "media/atom-size-two-routes.csv"
  ],
  "how": "Compiled by Ants, Cells & Atoms from the data listed",
  "data_by": [
    "Li C et al. 2023, Journal of Biomedical Optics 28(11):116501, CC BY 4.0, https://doi.org/10.1117/1.JBO.28.11.116501 (human hair, typically 50–100 µm; shared reference-objects.csv; retrieved 2026-10-25)",
    "VanDusen BM, Fegley SR, Peterson CH 2012, PLoS ONE 7(12):e52694, CC BY 4.0, https://doi.org/10.1371/journal.pone.0052694 (sand 63–2000 µm, Udden-Wentworth classes as used in the paper; shared reference-objects.csv; retrieved 2026-10-25)",
    "Volkmer B, Heinemann M 2011, PLoS ONE 6(7):e23126, Table 1, CC BY 4.0, https://doi.org/10.1371/journal.pone.0023126 (E. coli mean widths 1.0–1.5 µm across 22 growth conditions; shared cell-sizes.csv; retrieved 2026-10-25)",
    "Valli J et al. 2021, Journal of Biological Chemistry 297(1):100791, CC BY 4.0, https://doi.org/10.1016/j.jbc.2021.100791 (lateral limit 170–250 nm for a standard fluorescence system, citing Abbe 1873; shared reference-objects.csv; retrieved 2026-10-25)",
    "counts computed 2026-10-25 for this page"
  ]
}