"blue flash" meaning in English

See blue flash in All languages combined, or Wiktionary

Noun

Forms: blue flashes [plural]
Head templates: {{en-noun}} blue flash (plural blue flashes)
  1. (meteorology, astronomy) A very rare phenomenon observed in the morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash of blue light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere. Categories (topical): Astronomy, Meteorology Related terms: green flash
    Sense id: en-blue_flash-en-noun-ZrzOO2nq Categories (other): English entries with incorrect language header Disambiguation of English entries with incorrect language header: 52 48 Topics: astronomy, climatology, meteorology, natural-sciences
  2. (nuclear physics) A phenomenon sometimes observed when a criticality incident occurs in nuclear materials, inducing a discharge of radiation into the environment. Categories (topical): Nuclear physics, Nuclear energy, Radioactivity, Uranium
    Sense id: en-blue_flash-en-noun-FZOzAZor Disambiguation of Nuclear energy: 43 57 Disambiguation of Radioactivity: 38 62 Disambiguation of Uranium: 40 60 Categories (other): English entries with incorrect language header Disambiguation of English entries with incorrect language header: 52 48

Inflected forms

Download JSON data for blue flash meaning in English (3.8kB)

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        "A very rare phenomenon observed in the morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash of blue light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere."
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      "id": "en-blue_flash-en-noun-ZrzOO2nq",
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        "(meteorology, astronomy) A very rare phenomenon observed in the morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash of blue light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere."
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          "_dis": "40 60",
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        "A phenomenon sometimes observed when a criticality incident occurs in nuclear materials, inducing a discharge of radiation into the environment."
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    "Green_flash#Blue_flashes"
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      ],
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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-04-30 from the enwiktionary dump dated 2024-04-21 using wiktextract (210104c and c9440ce). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.