luminescence /lu·mi·nes·cence/ (loo″mĭ-nes´ens) the property of giving off light without a corresponding degree of heat.
luminescence
luminescence [lu″mĭ-nes´ens]
luminescence,
lu·mi·nes·cence (l  m -n s ns)n. 1. The emission of light that does not derive energy from the temperature of the emitting body, as in fluorescence and bioluminescence. 2. The light so emitted. |
luminescence
[lo̅o̅′mines′əns]
Etymology: L, lumen, light, escens, beginning
1 the emission of light by a material after excitation by some stimulus.
2 the emission of light by intensifying-screen phosphors after x-ray interaction. See also thermoluminescent dosimetry.
luminescence [lu″mĭ-nes´ens]
the property of giving off light without a corresponding degree of heat.
luminescence,
n 1. the emission of light by a material after excitation by some stimulus.
2. the emission of light by intensifying screen phosphors after radiographic interaction.
2. the emission of light by intensifying screen phosphors after radiographic interaction.
luminescence
the property of giving off light without a corresponding degree of heat.
luminescence
Emission of light by certain substances resulting from the absorption of energy (e.g. from electrical fields, chemical reaction, or other light), which is not due to a rise in temperature (unlike incandescence). The emitted radiation is characteristic of the particular substance. When the light emitted is due to exposure to a source of light the process is usually called photoluminescence. When the light emitted is due to either a high-frequency discharge through a gas, or to an electric field through certain solids such as phosphor which is used in fluorescent lamps, television picture tubes, etc., it is called electroluminescence. See bioluminescence; fluorescence; incandescence; fluorescent lamp; phosphorescence.
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