numerical aperture

dimensionless number that characterizes the range of angles over which the system can accept or emit light
Thing general Q898896
numerical aperture
Oleg Alexandrov · Public Domain · Wikimedia
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numerical aperture

Summary

numerical aperture ranks in the top 2% of general entities by monthly Wikipedia readership (362 views/month).[1]

Key Facts

  • numerical aperture's image is recorded as Numerical aperture.svg[2].
  • numerical aperture's GND ID is recorded as 1133103480[3].
  • numerical aperture's subclass of is recorded as dimensionless quantity[4].
  • numerical aperture's Commons category is recorded as Diaphragm (camera part)[5].
  • numerical aperture's Freebase ID is recorded as /m/0bcmd[6].
  • numerical aperture's Encyclopædia Britannica Online ID is recorded as technology/numerical-aperture[7].
  • numerical aperture's ISQ dimension is recorded as 1[8].
  • numerical aperture's Great Norwegian Encyclopedia ID is recorded as numerisk_apertur[9].
  • numerical aperture's Brockhaus Enzyklopädie online ID is recorded as numerische-apertur[10].
  • numerical aperture's World of Physics ID is recorded as NumericalAperture[11].
  • numerical aperture's Microsoft Academic ID is recorded as 159108749[12].
  • numerical aperture's Semantic Scholar topic ID is recorded as 182352[13].
  • numerical aperture's quantity symbol is recorded as A_{\mathrm{N}}[14].
  • numerical aperture's MetaSat ID is recorded as numericalAperture[15].
  • numerical aperture's IEV number is recorded as 731-03-85[16].
  • numerical aperture's OpenAlex ID is recorded as C159108749[17].
  • numerical aperture's IATE entry ID is recorded as 1420011[18].
  • numerical aperture's Oxford Reference overview ID is recorded as 20110803100241993[19].
  • numerical aperture's ComputerLanguage.com definition is recorded as numerical+aperture[20].

Why It Matters

numerical aperture ranks in the top 2% of general entities by monthly Wikipedia readership (362 views/month).[1] It has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[21] It is known by 4 alternative names across languages and contexts.[22]

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] . Freebase Data Dumps. wikidata.org.
  6. [7] . wikidata.org.
  7. [8] . wikidata.org.
  8. [9] . wikidata.org.
  9. [10] . wikidata.org.
  10. [11] . wikidata.org.
  11. [12] . wikidata.org.
  12. [13] . wikidata.org.
  13. [14] . wikidata.org.
  14. [15] . wikidata.org.
  15. [16] . wikidata.org.
  16. [17] . OpenAlex. Retrieved . docs.openalex.org. Provenance: wikidata.org.
  17. [18] . wikidata.org.
  18. [19] . wikidata.org.
  19. [20] . wikidata.org.

Aggregate / graph-position facts

  1. [1] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [21] . Wikidata sitelinks. wikidata.org.
  3. [22] . 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). numerical aperture. Retrieved April 10, 2026, from https://4ort.xyz/entity/numerical-aperture
MLA “numerical aperture.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/numerical-aperture.
BibTeX @misc{4ortxyz_numerical-aperture_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{numerical aperture}}, year = {2026}, url = {https://4ort.xyz/entity/numerical-aperture}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): numerical aperture — https://4ort.xyz/entity/numerical-aperture (retrieved 2026-04-10)

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