fluorescence(redirected from Fluorescent bulb)
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the emission of radiation during exposure to light or X rays
Not to be confused with:
florescence – act, state, or period of flowering; bloom
fluo·res·cence(flo͝o-rĕs′əns, flô-, flō-)
1. The emission of electromagnetic radiation, especially of visible light, stimulated in a substance by the absorption of incident radiation and persisting only as long as the stimulating radiation is continued.
2. The property of emitting such radiation.
3. The radiation so emitted.
1. (General Physics) physics
a. the emission of light or other radiation from atoms or molecules that are bombarded by particles, such as electrons, or by radiation from a separate source. The bombarding radiation produces excited atoms, molecules, or ions and these emit photons as they fall back to the ground state
b. such an emission of photons that ceases as soon as the bombarding radiation is discontinued
c. such an emission of photons for which the average lifetime of the excited atoms and molecules is less than about 10–8 seconds
2. (General Physics) the radiation emitted as a result of fluorescence. Compare phosphorescence
[C19: fluor + -escence (as in opalescence)]
fluo•res•cence(flʊˈrɛs əns, flɔ-, floʊ-)
1. the emission of radiation, esp. of visible light, by a substance during exposure to external radiation.
2. the property possessed by such a substance.
3. the radiation so produced.
1. The giving off of light by a substance when it is exposed to electromagnetic radiation, such as visible light or x-rays. Light is emitted only as long as the electromagnetic radiation continues to bombard the substance. Compare phosphorescence.
2. The light produced in this way.
Did You Know? Have you ever stood in a room illuminated by a "black light" and wondered why your white T-shirt, your shoelaces, and your teeth appear to glow? These objects appear so bright under ultraviolet light because they contain fluorescent materials that absorb the black light's ultraviolet rays (which are not visible to the human eye) and re-emit some of their energy as visible light. Therefore, these objects give off more visible light than is being shone on them, seemingly making something out of nothing. Many fabric whiteners leave fluorescent pigments behind in treated clothes; the clothes then look very bright because they absorb ultraviolet light from the environment and emit some of the absorbed energy as visible light.
The emission of light from an object which has been irradiated by light or other radiations. Energy is absorbed by the object and then re-radiated at a longer wavelength than the incident light.
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|Noun||1.||fluorescence - light emitted during absorption of radiation of some other (invisible) wavelength|
autofluorescence - self-induced fluorescence
light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"
phosphorescence - a fluorescence that persists after the bombarding radiation has ceased
fluorescence[flʊəˈresns] N → fluorescencia f
fluorescence[ˌflʊəˈrɛsəns] n → fluorescence f
n → Fluoreszenz f
fluorescence[ˌflʊəˈrɛs/əns] n → fluorescenza
giving off a certain kind of light. fluorescent light; fluorescent paint. fluoresserend; fluoresserende مُسْتَشِع، فلورِسَنت флоуресцентен fluorescente fluoreskující fluoreszierned fluorescerende φθορισμού fluorescente fluorestseeriv فلورسنت fluorisoiva fluorescent פְלוֹרוֹסֶנטִי अंधेरे में चमकने वाला पदार्थ fluorescentan, koji svjetluca fluoreszkáló berpendar flúrljómandi fluorescente 蛍光性の 형광성의 fluorescencinis fluorescējošs pendarfluor fluorescerendselvlysende fosforyzujący, odblaskowy, fluorescencyjny فلورسنت fluorescente fluorescent флуоресцентный fluoreskujúci fluorescenten fluorescentan fluorescerande เรืองแสง floresan, florışıl 螢光的 флуоресцентний فلوریت دار (vật lý) huỳnh quang 荧光的fluoˈrescence noun
fluoressensie إسْتِشْعاع، فَلْوَرَه флоуресцентност fluorescência fluorescence die Fluoreszenz fluorescens φθορισμόςfluorescencia fluorestsents شب نما fluoresenssi fluorescence הַנהָרָה चमक fluorescencija, svjetlucanje fluoreszkálás lampu neon flúrljóm fluorescenza 蛍光性 형광성 fluorescencija fluorescence pendarfluor fluorescentie det som er selvlysende, fluorescens fluorescencja دوړانګودخپرېدنى خاصيت چه دنورو منابعو څخه جذب شوى وى: داډول خپرې شوې وړانګى fluorescência fluorescenţă флуоресценция fluorescencia fluorescenca fluorescentnost fluorescens การส่องแสง florışıma 螢光 флуоресценція, свічення فلورییت دار tính huỳnh quang 荧光
n. fluorescencia, propiedad de emisión de luminosidad de ciertas sustancias cuando son expuestas a cierto tipo de radiación, tal como los rayos-x.