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natural unit of action

Document v1 · published by Koskamo · updated 2026-10-03

Original source

natural unit of action = 1.054 571 817… × 10⁻³⁴ J s (CODATA 2022 recommended value, NIST)

  • Value: 1.054571817e-34 (NIST lists only these digits; the exact value continues)
  • Uncertainty: none; the value is exact by definition of the SI
  • Unit: J s

Source and provenance

Original source
physics.nist.gov
Published on Koskamo by
Koskamo
Citation version
Document v1
Reuse
CODATA 2022 recommended values from NIST, a work of the US government (public domain in the United States)

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Version history

  1. Published by Koskamo

    Version 1