reduced Planck constant

the Planck constant divided by 2 π
Thing physical_constant Q2115969
reduced Planck constant
Subrat Meher · Public Domain · Wikimedia
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reduced Planck constant

Summary

reduced Planck constant is a physical constant[1]. It draws 3 Wikipedia views per month (physical_constant category, ranking #38 of 43).[2]

Key Facts

  • reduced Planck constant's image is recorded as U+210F.svg[3].
  • reduced Planck constant's instance of is recorded as physical constant[4].
  • reduced Planck constant's instance of is recorded as action[5].
  • reduced Planck constant's measured physical quantity is recorded as action[6].
  • Paul Dirac is named after reduced Planck constant[7].
  • Max Planck is named after reduced Planck constant[8].
  • reduced Planck constant's Commons category is recorded as Reduced Planck constant[9].
  • reduced Planck constant's notation is recorded as ℏ[10].
  • reduced Planck constant's numeric value is recorded as {'unit': 'Q1709783', 'amount': '+0.0000000000000000000000000000000001054500197921765038361332005608763113259910823179829917019987020293609409175803660557740077'}[11].
  • reduced Planck constant's Gran Enciclopèdia Catalana ID is recorded as 0263150[12].
  • reduced Planck constant's NIST/CODATA ID is recorded as hbar[13].
  • reduced Planck constant's different from is recorded as Planck constant[14].
  • reduced Planck constant's different from is recorded as molar Planck constant[15].
  • reduced Planck constant's defining formula is recorded as \hbar = \frac{h}{2\pi}[16].
  • reduced Planck constant's Google Knowledge Graph ID is recorded as /g/12176kb7[17].
  • reduced Planck constant's ISQ dimension is recorded as \mathsf{L}^2 \mathsf{M} \mathsf{T}^{-1}[18].
  • reduced Planck constant's Wolfram Language entity code is recorded as Entity["PhysicalConstant", "ReducedPlanckConstant"][19].
  • reduced Planck constant's World of Physics ID is recorded as h-Bar[20].
  • reduced Planck constant's maintained by WikiProject is recorded as WikiProject Mathematics[21].
  • reduced Planck constant's ProofWiki ID is recorded as Definition:Reduced_Planck_Constant[22].
  • reduced Planck constant's Wolfram Language unit code is recorded as "ReducedPlanckConstant"[23].
  • reduced Planck constant's in defining formula is recorded as \hbar[24].
  • reduced Planck constant's in defining formula is recorded as h[25].
  • reduced Planck constant's in defining formula is recorded as \pi[26].
  • reduced Planck constant's in defining formula is recorded as \mathrm J\cdot\mathrm s[27].

Why It Matters

reduced Planck constant draws 3 Wikipedia views per month (physical_constant category, ranking #38 of 43).[2] It has Wikipedia articles in 26 language editions, a strong signal of global cultural recognition.[28] It is known by 38 alternative names across languages and contexts.[29]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). reduced Planck constant. Retrieved May 3, 2026, from https://4ort.xyz/entity/reduced-planck-constant
MLA “reduced Planck constant.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/reduced-planck-constant.
BibTeX @misc{4ortxyz_reduced-planck-constant_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{reduced Planck constant}}, year = {2026}, url = {https://4ort.xyz/entity/reduced-planck-constant}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): reduced Planck constant — https://4ort.xyz/entity/reduced-planck-constant (retrieved 2026-05-03)

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