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luminous efficacy of radiation

measure of how well a light source produces visible light
Thing general Q1504173
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Summary

luminous efficacy of radiation ranks in the top 2% of general entities by monthly Wikipedia readership (408 views/month).[1]

Key Facts

  • luminous efficacy of radiation is a type of efficacy[2].
  • luminous efficacy of radiation is a type of physical quantity[3].
  • luminous efficacy of radiation's described by source is recorded as ISO 80000-7:2019 Quantities and units — Part 7: Light and radiation[4].
  • luminous efficacy of radiation's different from is recorded as luminous efficacy of a source[5].
  • luminous efficacy of radiation's different from is recorded as luminous efficiency[6].
  • luminous efficacy of radiation's different from is recorded as spectral luminous efficacy[7].
  • luminous efficacy of radiation's maintained by WikiProject is recorded as WikiProject Mathematics[8].
  • luminous efficacy of radiation's recommended unit of measurement is recorded as lumen per watt[9].
  • luminous efficacy of radiation's recommended unit of measurement is recorded as candela steradian cubic second per kilogram square metre[10].

Body

Definition and Type

Recorded subclass of include efficacy[2] and physical quantity[3].

Why It Matters

luminous efficacy of radiation ranks in the top 2% of general entities by monthly Wikipedia readership (408 views/month).[1] It has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[11] It is known by 34 alternative names across languages and contexts.[12]

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] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [11] ↑ . Wikidata sitelinks. wikidata.org.
  3. [12] ↑ . 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). luminous efficacy of radiation. Retrieved October 20, 2026, from https://4ort.xyz/entity/luminous-efficacy-of-radiation
MLA “luminous efficacy of radiation.” 4ort.xyz Knowledge Graph, 4ort.xyz, 20 Oct. 2026, https://4ort.xyz/entity/luminous-efficacy-of-radiation.
BibTeX @misc{4ortxyz_luminous-efficacy-of-radiation_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{luminous efficacy of radiation}}, year = {2026}, url = {https://4ort.xyz/entity/luminous-efficacy-of-radiation}, note = {Accessed: 2026-10-20}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): luminous efficacy of radiation — https://4ort.xyz/entity/luminous-efficacy-of-radiation (retrieved 2026-10-20)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · عُثمان · 2026-09-10 view diff on Wikidata ↗
    Recommended unit of measurement → lumen per watt, candela steradian cubic second per kilogram square metre
    Wurvoc.org measure id → Luminous_efficacy
    Subclass of → —
    Maintained by wikiproject → WikiProject Mathematics
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:1||1 */ Wurvoc.org measure id: Luminous_efficacy, Matched to [[:toollabs:mix-n-match/#/entry/14008397|luminous efficacy (#14008397)]] in [[:toollabs:mix-n-match/#/catalog/281|Wurv"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.