illuminance

luminous flux incident on a surface per area
Thing general Q194411
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illuminance

Summary

illuminance ranks in the top 2% of general entities by monthly Wikipedia readership (122 views/month).[1]

Key Facts

  • illuminance's GND ID is recorded as 4280120-5[2].
  • illuminance's subclass of is recorded as physical quantity[3].
  • illuminance's subclass of is recorded as scalar quantity[4].
  • illuminance's subclass of is recorded as photometric quantity[5].
  • illuminance's Commons category is recorded as Illuminance[6].
  • illuminance's BNCF Thesaurus ID is recorded as 30613[7].
  • illuminance's Freebase ID is recorded as /m/03bbc3[8].
  • illuminance's Dewey Decimal Classification is recorded as 621.32[9].
  • illuminance's OmegaWiki Defined Meaning is recorded as 391018[10].
  • illuminance's described by source is recorded as ISO 80000-7:2019 Quantities and units — Part 7: Light and radiation[11].
  • illuminance's described by source is recorded as Principles governing photometry (2nd edition)[12].
  • illuminance's different from is recorded as luminance[13].
  • illuminance's defining formula is recorded as E_{\mathrm{v}} = \frac{\mathrm{d} \Phi_{\mathrm{v}}}{\mathrm{d} A}[14].
  • illuminance's Great Russian Encyclopedia Online ID is recorded as 2695990[15].
  • illuminance's NE.se ID is recorded as belysning-(2)[16].
  • illuminance's wurvoc.org measure ID is recorded as Illuminance[17].
  • illuminance's JSTOR topic ID is recorded as illuminance[18].
  • illuminance's ISQ dimension is recorded as \mathsf{L}^{-2} \mathsf{J}[19].
  • illuminance's IUPAC Gold Book ID is recorded as I02941[20].
  • illuminance's Interlingual Index ID is recorded as i63373[21].
  • illuminance's maintained by WikiProject is recorded as WikiProject Mathematics[22].
  • illuminance's Microsoft Academic ID is recorded as 36365805[23].
  • illuminance's in defining formula is recorded as E_{\mathrm{v}}[24].
  • illuminance's in defining formula is recorded as \Phi_{\mathrm{v}}[25].
  • illuminance's in defining formula is recorded as A[26].

Why It Matters

illuminance ranks in the top 2% of general entities by monthly Wikipedia readership (122 views/month).[1] illuminance has Wikipedia articles in 23 language editions, a strong signal of global cultural recognition.[27] illuminance is known by 17 alternative names across languages and contexts.[28]

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [3] . wikidata.org.
  3. [4] . wikidata.org.
  4. [5] . wikidata.org.
  5. [6] . wikidata.org.
  6. [7] . Nuovo soggettario. wikidata.org.
  7. [8] . Freebase Data Dumps. wikidata.org.
  8. [9] . Integrated Authority File. Retrieved . wikidata.org.
  9. [10] . wikidata.org.
  10. [11] . wikidata.org.
  11. [12] . wikidata.org.
  12. [13] . wikidata.org.
  13. [14] . ISO 80000-7:2019 Quantities and units — Part 7: Light and radiation. wikidata.org.
  14. [15] . wikidata.org.
  15. [16] . wikidata.org.
  16. [17] . wikidata.org.
  17. [18] . wikidata.org.
  18. [19] . wikidata.org.
  19. [20] . wikidata.org.
  20. [21] . wikidata.org.
  21. [22] . wikidata.org.
  22. [23] . wikidata.org.
  23. [24] . wikidata.org.
  24. [25] . wikidata.org.
  25. [26] . wikidata.org.

Aggregate / graph-position facts

  1. [1] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [27] . Wikidata sitelinks. wikidata.org.
  3. [28] . 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). illuminance. Retrieved April 10, 2026, from https://4ort.xyz/entity/illuminance
MLA “illuminance.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/illuminance.
BibTeX @misc{4ortxyz_illuminance_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{illuminance}}, year = {2026}, url = {https://4ort.xyz/entity/illuminance}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): illuminance — https://4ort.xyz/entity/illuminance (retrieved 2026-04-10)

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