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- Dictionaryluminescence/ˌluːmɪˈnɛsns/
noun
- 1. the emission of light by a substance that has not been heated, as in fluorescence and phosphorescence: "honey fungus produces a ghostly greenish luminescence"
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the giving out of light by a substance that has not been heated: A variety of lighting elements are used, from LED to chemical luminescence. Compare. incandescence. literary. soft light: The car headlights lit the driveway with a pool of bright luminescence. The table-lamp threw a soft luminescence across the chair. See. luminescent. Fewer examples
Luminescence is a spontaneous emission of radiation from an electronically or vibrationally excited species not in thermal equilibrium with its environment. A luminescent object emits cold light in contrast to incandescence, where an object only emits light after heating.
luminescence, emission of light by certain materials when they are relatively cool. It is in contrast to light emitted from incandescent bodies, such as burning wood or coal, molten iron, and wire heated by an electric current.
The meaning of LUMINESCENCE is the low-temperature emission of light (as by a chemical or physiological process); also : light produced by luminescence. How to use luminescence in a sentence.
the giving out of light by a substance that has not been heated: A variety of lighting elements are used, from LED to chemical luminescence. Compare. incandescence. literary. soft light: The car headlights lit the driveway with a pool of bright luminescence. The table lamp threw a soft luminescence across the chair. See. luminescent. Fewer examples
May 14, 2023 · Luminescence is a process by which a substance emits light without becoming noticeably heated. The term comes from the Latin word “lumen”, meaning “light.”. In contrast, incandescence is light resulting from heating a material so that it emits blackbody radiation.
noun. any giving off of light caused by the absorption of radiant or corpuscular energy and not by incandescence; any cold light; specif., fluorescence or phosphorescence occurring in various chemical, biological, electrical, etc. processes at relatively low temperatures. Webster’s New World College Dictionary, 4th Edition.
The emission of light as a result of the excitation of atoms by energy other than heat. Bioluminescence, fluorescence, and phosphorescence are examples of luminescence that can be produced by biological or chemical processes.
Luminescence, scientifically speaking, describes a glow or light that's emitted at a cool temperature, rather than one caused by a fire, for example. The Latin root is lumen, or "light." Definitions of luminescence. noun. light not due to incandescence; occurs at low temperatures. synonyms: phosphorescence. see more. noun.
Definition of luminescence noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
