apostilb

unit of measurement; 1/π candela per square metre
Intangible unit_of_luminance Q619941
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apostilb

Summary

apostilb is an unit of luminance[1]. apostilb draws 12 Wikipedia views per month (unit_of_luminance category, ranking #4 of 6).[2]

Key Facts

  • apostilb is credited with the discovery of André Blondel[3].
  • apostilb's instance of is recorded as unit of luminance[4].
  • apostilb's measured physical quantity is recorded as luminance[5].
  • stilb is named after apostilb[6].
  • apostilb's Freebase ID is recorded as /m/0h3qmsf[7].
  • apostilb's conversion to SI unit is recorded as {'unit': 'Q281096', 'amount': '+0.3183098861837906715377675267450287240689192914809128974953346881177935952684530701802276055325061719121456854535159160737858'}[8].
  • apostilb's Wikidata SPARQL query equivalent is recorded as wd:Q619941 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)[9].
  • apostilb's Great Norwegian Encyclopedia ID is recorded as apostilb[10].
  • apostilb's unit symbol is recorded as {'lang': 'en', 'text': 'asb'}[11].
  • apostilb's Microsoft Academic ID is recorded as 85702376[12].
  • apostilb's Wolfram Language unit code is recorded as "Apostilbs"[13].
  • apostilb's Great Russian Encyclopedia portal ID is recorded as apostil-b-de53ef[14].

Body

Works and Contributions

apostilb is credited with the discovery of André Blondel[3].

Why It Matters

apostilb draws 12 Wikipedia views per month (unit_of_luminance category, ranking #4 of 6).[2] apostilb has Wikipedia articles in 11 language editions, a strong signal of global cultural recognition.[15] apostilb is known by 6 alternative names across languages and contexts.[16]

References

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

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [3] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . Freebase Data Dumps. 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.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [15] . Wikidata sitelinks. wikidata.org.
  3. [16] . 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). apostilb. Retrieved May 3, 2026, from https://4ort.xyz/entity/apostilb
MLA “apostilb.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/apostilb.
BibTeX @misc{4ortxyz_apostilb_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{apostilb}}, year = {2026}, url = {https://4ort.xyz/entity/apostilb}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): apostilb — https://4ort.xyz/entity/apostilb (retrieved 2026-05-03)

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