Is the term used to describe a material, which continues to fluoresce (slowly diminishing) after the source of excitation has been removed.
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• (n.) The quality or state of being phosphorescent; or the act of phosphorescing. • (n.) A phosphoric light.
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http://thinkexist.com/dictionary/meaning/phosphorescence/
emission of light from a substance exposed to radiation and persisting as an afterglow after the exciting radiation has been removed. Unlike ... [7 related articles]
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http://www.britannica.com/eb/a-z/p/59
spontaneous emission persists for a long time after the exciting radiation ceases. This long-lived relaxation arises from the fact that the transition being made here is a forbidden inter-system crossing.
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http://www.chemistry-dictionary.com/definition/phosphorescence.php
A form of luminescence in which a substance emits visible light some time after it has been stimulated or excited by electromagnetic radiation of a different wavelength or by certain other means not involving a rise in temperature. The light is given off within a period arbitrarily set at greater th...
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luminescence persisting for an appreciable time after withdrawal of the exciting irradiation NOTE - Luminescence is defined in 845-04-18.
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=394-38-59
photoluminescence delayed by storage of energy in an intermediate energy level NOTE 1 - For organic substances, the term phosphorescence applies generally to triplet-singlet transitions. NOTE 2 - This term is sometimes used as a loose expression to designate other types of luminescence.
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luminescence that continues for an appreciable time after excitation
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1. <chemistry> Emission of light following absorption of radiation. Emitted light is of longer wavelength than the exciting radiation and is a result of decay of electrons from the triplet to the ground state. Lasts longer than fluorescence electron decay from singlet to ground state) and occurs after a longer delay. ... 2. <biology> Po...
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http://www.encyclo.co.uk/local/20973
(fos″fә-res´әns) the emission of light without appreciable heat; it is characterized by the emission of absorbed light after a delay and at a considerably longer wavelength than that of the absorbed light. adj., phosphores´cent., adj.
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A continuing glow exhibited by some gemstones after thesource of illumination has been removed.
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http://www.encyclo.co.uk/local/22148
Emission of visible light by a substance, such as a mineral, that is exposed to ultraviolet light and absorbs radiation from it. The light appears in the form of glowing, distinctive colors. The emission continues after the exposure to ultraviolet light ends.
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(1) Emission of light following absorption of radiation. Emitted light is of longer wavelength than the exciting radiation and is a result of decay of electrons from the triplet to the ground state. Lasts longer than fluorescence (electron decay from singlet to ground state) and occurs after a longer delay. (2) Popularly misused as a term for biological luminescence, eg. by fireflies.
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Phos`phor·es'cence noun [ Confer French
phosphorescence .]
1. The quality or state of being phosphorescent; or the act of phosphorescing.
2. A phosphoric light.
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http://www.encyclo.co.uk/webster/P/75
Type: Term Pronunciation: fos′fŏ-res′ĕnts Definitions: 1. The quality or property of emitting light without active combustion or the production of heat, generally as the result of prior exposure to radiation, which persists after the inciting cause is removed.
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http://www.medilexicon.com/medicaldictionary.php?t=68514
[
n] - a fluorescence that persists after the bombarding radiation has ceased
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http://www.webdictionary.co.uk/definition.php?query=phosphorescence
phosphorescence 1. The emission of light in darkness by the release of absorbed radiation; also, the light so produced; see bioluminescence. 2. The continued emission of light without heat after exposure to and removal of a source of electromagnetic radiation.
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the ability of certain materials to absorb energy and then release that energy as light after a delay
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[The Tempest] a continuing luminescence without noticeable heat.
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https://www.cliffsnotes.com/literature/t/the-tempest/study-help/full-glossa
luminescence that continues after the source of excitation has been removed; a so-to-speak afterglow.
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https://www.encyclo.co.uk/local/20132
Minerals that glow in the dark for a time after being exposed to light give this effect.
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https://www.encyclo.co.uk/local/20501
The property of a material whereby it continues to emit visible light after it has been illuminated by ultraviolet light.
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https://www.encyclo.co.uk/local/20687
noun a fluorescence that persists after the bombarding radiation has ceased
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https://www.encyclo.co.uk/local/20974
Emission of light by certain substances after they have absorbed energy, whether from visible light, other electromagnetic radiation such as ultraviolet rays or X-rays, or cathode rays (a beam of electrons). When the stimulating energy is removed phosphorescence persists for more than 0.1 nanoseconds before ceasing (unlike fluorescence, which s...
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https://www.encyclo.co.uk/local/21221
Emission of light without sensible heat, particularly as a result of but continuing after absorption
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https://www.encyclo.co.uk/local/22373
No exact match found.
