luminescence

luminescence
Emission of light from a body as a result of a chemical reaction. See bioluminescence. [L. lumen, light]

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lu·mi·nes·cence .lü-mə-'nes-ən(t)s n the low-temperature emission of light produced esp. by physiological processes (as in the firefly), by chemical action, by friction, or by electrical action also light produced by luminescence
lu·mi·nesce -'nes vi, -nesced; -nesc·ing
lu·mi·nes·cent -ənt adj

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n.
the emission of light from a substance after it has been irradiated. fluorescence is a type of luminescence. This phenomenon is used in a fluoroscope, a gamma camera, an X-ray cassette, and some types of dosimeter.

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lu·mi·nes·cence (loo″mĭ-nesґəns) the property of giving off light without showing a corresponding degree of heat.

Medical dictionary. 2011.

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  • Luminescence — is also the title of an album by singer Anggun. Luminescence is light not generated by high temperatures alone. It is different from incandescence, in that it usually occurs at low temperatures and is thus a form of cold body radiation. It can be …   Wikipedia

  • luminescence — 1884, from L. lumen (gen. luminis) light (see LUMINOUS (Cf. luminous)) + ESCENCE (Cf. escence). Fluorescence and Phosphorescence Prof. E. Wiedmann has made a new study of these phenomena. He proposes the general name luminescence for evolutions… …   Etymology dictionary

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  • luminescence —  Luminescence  Люминесценция   Излучение световых волн веществом, находящимся в электронно возбуждённом состоянии. В зависимости от того, является ли электронно возбуждённое состояние синглетным или триплетным, излучение света называется… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • luminescence — ► NOUN ▪ the emission of light by a substance that has not been heated, as in fluorescence and phosphorescence. DERIVATIVES luminescent adjective …   English terms dictionary

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  • luminescence — luminescent, adj. /looh meuh nes euhns/, n. 1. the emission of light not caused by incandescence and occurring at a temperature below that of incandescent bodies. 2. the light produced by such an emission. [1885 90; < L lumin (see LUMEN) +… …   Universalium

  • luminescence — [[t]lu͟ːmɪne̱s(ə)ns[/t]] N UNCOUNT Luminescence is a soft, glowing light. [LITERARY] Lights reflected off dust covered walls creating a ghostly luminescence …   English dictionary

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