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phosphorescent substance

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  • Phosphorescent — Phos phor*es cent, a. [Cf. F. phosphorescent.] Shining with a phosphoric light; luminous without sensible heat. n. A phosphorescent substance. [1913 Webster] …   The Collaborative International Dictionary of English

  • phosphorescent — 1. adjective Having the property of emitting light for a period of time after the source of excitation is taken away, e.g., in electrostatic storage tubes and cathode ray tubes. See Also: phosphor, phosphoresce, phosphoroscope 2. noun A… …   Wiktionary

  • phosphorescent — phosphorescence ► NOUN 1) light emitted by a substance without combustion or perceptible heat. 2) Physics the emission of radiation in a similar manner to fluorescence but continuing after excitation ceases. DERIVATIVES phosphoresce verb… …   English terms dictionary

  • Henri Becquerel — Infobox Scientist name = Antoine Henri Becquerel image width = 180px caption = Antoine Becquerel, French physicist birth date = birth date|df=yes|1852|12|15| birth place = Paris, France death date = death date and age|df=yes|1908|8|25|1852|12|15… …   Wikipedia

  • phosphor — 1. A chemical substance that transforms incident electromagnetic or radiation energy into light, as in scintillation radioactivity determinations or radiographic intensifying screens or image amplifiers. 2. Any substance capable of exhibiting …   Medical dictionary

  • phosphor — /fos feuhr, fawr/, n. 1. any of a number of substances that exhibit luminescence when struck by light of certain wavelengths, as by ultraviolet. 2. Literary. a phosphorescent substance. adj. 3. Archaic. phosphorescent. [1625 35; < F phosphore < L …   Universalium

  • phosphorus — [fäs′fə rəs] n. [ModL < L Phosphorus, morning star < Gr phōsphoros, bringer of light < phōs, a light, contr. < phaos < IE base * bhā , to shine > Gr phainein, to show (> FANTASY) + PHOR(O)US] 1. Archaic any phosphorescent… …   English World dictionary

  • phosphor — also phosphore noun Etymology: Latin phosphorus, from Greek phōsphoros, literally, light bringer, from phōsphoros light bearing, from phōs light + pherein to carry, bring more at fancy, bear Date: 1705 1. a phosphorescent substance 2. a… …   New Collegiate Dictionary

  • phos|pho|rus — «FOS fuhr uhs», noun. 1. a solid nonmetallic chemical element which exists in several forms different in physical and chemical properties but not in kind of atoms. The most common form is a yellow, poisonous, waxy substance, which burns slowly at …   Useful english dictionary

  • Luminous — Lu mi*nous, a. [L. luminosus, fr. lumen light: cf. F. lumineux. See {Luminary}, {Illuminate}.] [1913 Webster] 1. Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous color. [1913 Webster] Fire burneth… …   The Collaborative International Dictionary of English

  • Luminous paint — Luminous Lu mi*nous, a. [L. luminosus, fr. lumen light: cf. F. lumineux. See {Luminary}, {Illuminate}.] [1913 Webster] 1. Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous color. [1913 Webster] Fire… …   The Collaborative International Dictionary of English


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