Rydberg energy
type: Thing
description: physical constant equal to the ionization energy of the hydrogen atom in a simplified Bohr model
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  value: physical constant
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  value: 1\,\mathrm{Ry}=\frac{m_{\mathrm e}e^4}{2(4\pi\epsilon_0\hbar)^2}
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  value: \hbar
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  value: \epsilon_0
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citations:
  source: 2018 CODATA recommended values
  stated in qid: Q78206045
meta:
  wikidata id: Q13542672
  domain: unit_of_energy
  level: standard
  html url: https://4ort.xyz/entity/rydberg-energy
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  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-23T12:04:11.287240Z
  entity updated at: 2026-05-03T21:19:00.258443+00:00Z
  entity created at: 2026-05-03T14:10:41.860507+00:00Z