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coherence time

the time over which a propagating wave (especially a laser or maser beam) may be considered coherent
Intangible formula Q4118612
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coherence time

Summary

coherence time is a formula[1]. It draws 22 Wikipedia views per month (formula category, ranking #123 of 501).[2]

Key Facts

  • coherence time's instance of is recorded as formula[3].
  • coherence time's Freebase ID is recorded as /m/0b681[4].
  • coherence time's Encyclopædia Britannica Online ID is recorded as science/coherence-time[5].
  • coherence time's defining formula is recorded as \tau = \frac{1}{\Delta \nu} \approx \frac{\lambda^2}{c\, \Delta \lambda}[6].
  • coherence time's maintained by WikiProject is recorded as WikiProject Mathematics[7].
  • coherence time's Microsoft Academic ID is recorded as 47091857[8].
  • coherence time's OpenAlex ID is recorded as C47091857[9].

Why It Matters

coherence time draws 22 Wikipedia views per month (formula category, ranking #123 of 501).[2] It has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[10]

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] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . OpenAlex. Retrieved . docs.openalex.org. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [10] ↑ . Wikidata sitelinks. 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). coherence time. Retrieved May 3, 2026, from https://4ort.xyz/entity/coherence-time
MLA “coherence time.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/coherence-time.
BibTeX @misc{4ortxyz_coherence-time_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{coherence time}}, year = {2026}, url = {https://4ort.xyz/entity/coherence-time}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): coherence time — https://4ort.xyz/entity/coherence-time (retrieved 2026-05-03)

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