fluorescence


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fluorescence

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-)
n.
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.

fluorescence

(ˌflʊəˈrɛsəns)
n
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-)

n.
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.
[1852; fluor (spar) + (opal)escence]

fluo·res·cence

(flo͝o-rĕs′əns)
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.

fluorescence

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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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
Translations
إسْتِشْعاع، فَلْوَرَه
fluorescence
fluorescens
fluoreszkálás
flúrljóm
fluorescencia
florışıma

fluorescence

[flʊəˈresns] Nfluorescencia f

fluorescence

[ˌflʊəˈrɛsəns] nfluorescence f

fluorescence

nFluoreszenz f

fluorescence

[ˌflʊəˈrɛsns] nfluorescenza

fluorescent

(fluəˈresnt) adjective
giving off a certain kind of light. fluorescent light; fluorescent paint.
fluoˈrescence noun

fluor·es·cence

n. fluorescencia, propiedad de emisión de luminosidad de ciertas sustancias cuando son expuestas a cierto tipo de radiación, tal como los rayos-x.
References in periodicals archive ?
M2 PRESSWIRE-August 20, 2019-: Global Fluorescence Microscopy Market Research Report: 2017-2019 & 2023
It aims to measure chlorophyll fluorescence, an emission of radiation at the visible and near-infrared wavelengths.
6, 2018 (HealthDay News) -- The presence of visible fluorescence can serve as an intraoperative diagnostic surgical biomarker of high-grade glioma within a brain tumor, according to a study presented at the 2018 National Cancer Research Institute Cancer Conference, held from Nov.
Neurosurgeons explain how fluorescence-guided surgery can clearly delineate abnormal structures in real-time with agents that permit direct fluorescence visualization in the brain during surgery.
PerkinElmer's FL 6500 Pulse Xenon and FL 8500 Continuous Wave Fluorescence spectrometers enable industrial companies, universities, government, contract and pharmaceutical laboratories to analyze a diverse range of sample types, and meet growing research or evolving compliance requirements.
Two microscopic systems are used in demonstrating AFB in sputum smears to diagnose pulmonary tuberculosis, Bright field or Ordinary Microscopy and Fluorescence Microscopy (8).
In this study, the [alpha]-glucosidase inhibitory mechanism of phloridzin was investigated by inhibitory test, fluorescence spectroscopy and molecular docking method.
M2 EQUITYBITES-August 15, 2018-MolecuLight Inc awarded US FDA De Novo clearance for first-of-its-kind handheld fluorescence imaging device for the US wound care market
Global Banking News-August 15, 2018-MolecuLight Inc awarded US FDA De Novo clearance for first-of-its-kind handheld fluorescence imaging device for the US wound care market
M2 PHARMA-August 15, 2018-MolecuLight Inc awarded US FDA De Novo clearance for first-of-its-kind handheld fluorescence imaging device for the US wound care market

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