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lumen

SI unit of luminous flux
Intangible si_derived_unit Q484092
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Summary

lumen is a SI derived unit[1]. lumen draws 6,018 Wikipedia views per month (si derived unit category, ranking #4 of 23).[2]

Key Facts

  • Instance of: SI unit with special name[3], UCUM derived unit[4], unit of luminous flux[5]
  • Measured physical quantity: luminous flux[6]
  • Described by source: Great Soviet Encyclopedia (1926–1947)[7], National Encyclopedia of Uzbekistan[8], Armenian Soviet Encyclopedia, vol. 4[9]
  • Different from: Lumen[10]
  • Conversion to SI unit: 1 lumen[11]
  • Wikidata SPARQL query equivalent: wd:Q484092 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)[12]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[13]
  • Unit symbol: lm[14], лм[15]
  • Derived from base unit: candela[16], steradian[17]

Why It Matters

lumen has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[18] lumen is known by 33 alternative names across languages and contexts.[19]

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] ↑ . ISO 80000-1:2009 Quantities and units—Part 1: General. 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] ↑ . Logopedia. wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [18] ↑ . Wikidata sitelinks. wikidata.org.
  3. [19] ↑ . 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). lumen. Retrieved October 14, 2026, from https://4ort.xyz/entity/lumen
MLA “lumen.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/lumen.
BibTeX @misc{4ortxyz_lumen_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{lumen}}, year = {2026}, url = {https://4ort.xyz/entity/lumen}, note = {Accessed: 2026-10-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): lumen — https://4ort.xyz/entity/lumen (retrieved 2026-10-14)

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