Planck constant

physical constant representing the quantum of action
Thing physical_constant Q122894
Planck constant
Subrat Meher · Public Domain · Wikimedia
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Planck constant

Summary

Planck constant is a physical constant[1]. It ranks in the top 5% of physical_constant entities by monthly Wikipedia readership (3,736 views/month).[2]

Key Facts

  • Planck constant is credited with the discovery of Max Planck[3].
  • Planck constant's image is recorded as U+210E.svg[4].
  • Planck constant's instance of is recorded as physical constant[5].
  • Planck constant's instance of is recorded as UCUM constant[6].
  • Planck constant's instance of is recorded as action[7].
  • Planck constant's measured physical quantity is recorded as action[8].
  • Max Planck is named after Planck constant[9].
  • Planck constant's GND ID is recorded as 4174790-2[10].
  • Planck constant's Commons category is recorded as Planck constant[11].
  • Planck constant's pronunciation audio is recorded as LL-Q9610 (ben)-Tahmid-প্ল্যাঙ্কের ধ্রুবক.wav[12].
  • Planck constant's time of discovery or invention is recorded as +1901-00-00T00:00:00Z[13].
  • Planck constant's Freebase ID is recorded as /m/09lbb[14].
  • Planck constant's Dewey Decimal Classification is recorded as 530.81[15].
  • Planck constant's numeric value is recorded as {'unit': 'Q1709783', 'amount': '+0.000000000000000000000000000000000662607015'}[16].
  • Planck constant's Gran Enciclopèdia Catalana ID is recorded as 0051399[17].
  • Planck constant's Encyclopædia Britannica Online ID is recorded as science/Plancks-constant[18].
  • Planck constant's NIST/CODATA ID is recorded as h[19].
  • Planck constant's different from is recorded as reduced Planck constant[20].
  • Planck constant's different from is recorded as molar Planck constant[21].
  • Planck constant's defining formula is recorded as h=\frac{3\times7\times6\,310\,543}{2^{42}\times5^{41}}\,\mathrm J\cdot\mathrm s[22].
  • Planck constant's defining formula is recorded as E=h\cdot\nu=\frac{h\cdot c}\lambda[23].
  • Planck constant's Great Russian Encyclopedia Online ID is recorded as 3143496[24].
  • Planck constant's Encyclopædia Universalis ID is recorded as planck-quantum-d-action[25].
  • Planck constant's Quora topic ID is recorded as Planck-Constant[26].
  • Planck constant's JSTOR topic ID is recorded as planck-constant[27].

Body

Works and Contributions

Planck constant is credited with the discovery of Max Planck[3].

Why It Matters

Planck constant ranks in the top 5% of physical_constant entities by monthly Wikipedia readership (3,736 views/month).[2] It has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[28] It is known by 40 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [5] . wikidata.org.
  3. [6] . wikidata.org.
  4. [7] . wikidata.org.
  5. [3] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . lingualibre.org. lingualibre.org. Provenance: wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Freebase Data Dumps. wikidata.org.
  13. [15] . Integrated Authority File. wikidata.org.
  14. [16] . SI Brochure (9th edition): Concise summary. bipm.org. Provenance: 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] . Quora. 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). Planck constant. Retrieved May 3, 2026, from https://4ort.xyz/entity/planck-constant
MLA “Planck constant.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/planck-constant.
BibTeX @misc{4ortxyz_planck-constant_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Planck constant}}, year = {2026}, url = {https://4ort.xyz/entity/planck-constant}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Planck constant — https://4ort.xyz/entity/planck-constant (retrieved 2026-05-03)

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