1) Autofluorescence 2) Glow 3) Phosphorescence 4) Transparency
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https://www.crosswordclues.com/clue/fluorescence
1) Light 2) The radiation so produced 3) Visible light 4) Visible radiation
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https://www.crosswordclues.com/clue/fluorescence
fluorescent; fluorescent compound. A fluorescent substance absorbs short wavelength radiation and re-emits it as radiation with a longer wavelength in a very short time.
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http://antoine.frostburg.edu/chem/senese/101/glossary/f.shtml
is the general term used to describe the emission of 'cold' non incandescent light by a substance while it is being excited by radiation of shorter wavelength and higher energy.
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http://gemologyonline.com/gemology_dictionary.htm
the emission of visible light by a gemstone when exposed to a light source whose light we normally cannot see. When the gemstone is exposed to ultraviolet light (UV), which falls outside the range of light that we can see, the UV light is absorbed by the gemstone. Due to processes inside the gemstone, it will lose energy. This loss of energy cause...
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http://gemologyproject.com/wiki/index.php?title=Glossary_of_Terms
• (n.) That property which some transparent bodies have of producing at their surface, or within their substance, light different in color from the mass of the material, as when green crystals of fluor spar afford blue reflections. It is due not to the difference in the color of a distinct surface layer, but to the power which the substance ha...
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http://thinkexist.com/dictionary/meaning/fluorescence/
(from the article `analysis`) ...the lower electron orbital without inverting its spin—i.e., without changing the direction in which the electron rotates in the presence of a ... ...(light of essentially one `colour`—i.e., composed of a very narrow range of frequencies). As the light is tuned across the frequency ran...
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http://www.britannica.com/eb/a-z/f/40
Absorption of high energy radiation by a substance and subsequent emission of visible light.
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http://www.chemistry-dictionary.com/definition/fluorescence.php
Fluorite showing fluorescence under UV light A form of luminescence in which a substance emits visible light almost immediately after it has been stimulated or excited by electromagnetic radiation of a different wavelength or by certain other means (such as electrons striking the surface of a T...
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http://www.daviddarling.info/encyclopedia/F/fluorescence.html
luminescence observed only during irradiation NOTE - Luminescence is defined in 845-04-18.
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=394-38-60
photoluminescence in which the emitted optical radiation results from direct transitions from the photo-excited energy level to a lower level, these transitions taking place generally within 10 nanoseconds after the excitation
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=845-04-20
luminescence that occurs essentially only during irradiation
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-02-81
If a substance absorbs light at one wavelength and re-radiates it at another wavelength almost immediately, it is fluorescent; this is why many materials glow under ultraviolet light. If the substance keeps re-radiating light over a period of seconds, minutes, or hours, it is called phosphorescent.
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http://www.encyclo.co.uk/local/20046
Absorption of high energy radiation by a substance and subsequent emission of visible light.
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http://www.encyclo.co.uk/local/20728
<chemistry, physics> The emission of one or more photons by a molecule or atom activated by the absorption of a quantum of electro magnetic radiation. ... Typically the emission, that is of longer wavelength than the excitatory radiation, occurs within 10exp 8 seconds: phosphorescence is a phenomenon with a longer or much longer delay in re r...
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http://www.encyclo.co.uk/local/20973
(fldbobr-res´әns) the property of emitting light while exposed to light, the wavelength of the emitted light being longer than that of the absorbed light. fluorescence microscopy the use of a fluorescence microscope to identify microorganisms or specific tissue constituents th...
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http://www.encyclo.co.uk/local/21001
Certain diamonds disperse a bluish glow when exposed to ultraviolet light. A diamond should not have strong fluorescence, but faint or moderate fluorescence does not affect the diamonds look. Some customers prefer a faint fluorescence, because it balances the yellow colour of some of the less expensive stones.
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http://www.encyclo.co.uk/local/22161
Emission of visible light by a substance, such as a mineral, that is currently exposed to ultraviolet light and absorbs radiation from it. The light appears in the form of glowing, distinctive colors. The emission ends when the exposure to ultraviolet light ends. Minerals describes as fluorescent have the ability to fluoresce.
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http://www.encyclo.co.uk/local/22291
instantaneous re-emission of light of a greater wave length than that light originally absorbed.
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http://www.encyclo.co.uk/visitor-contributions.php
Flu`o·res'cence noun [ From
Fluor .]
(Opt.) That property which some transparent bodies have of producing at their surface, or within their substance, light different in color from the mass of the material, as when green crystals of fluor spar afford blue reflections. It is due not to the d...
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http://www.encyclo.co.uk/webster/F/49
Fluorescence is the process of emission of electromagnetic radiation resulting from the absorption of certain types of energy. Fluorescent paints are usually the sulphides of calcium, barium and strontium which glow in the dark after having been exposed to light for a while.
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http://www.probertencyclopaedia.com/browse/GF.HTM
Fluorescence is the effect viewed when a diamond glows under ultra-violet light (UV). Some 50 percent of polished diamonds display fluorescence, most of them in a blue hue, but sometimes other colors, especially yellow, can be observed. When diamond displays relatively strong fluorescence, it can cause a diamond to look somewhat “hazy” and ther...
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http://www.translationdirectory.com/glossaries/glossary275.php
Emission of light by a substance when some radiations fall on it.
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http://www.vidyagyaan.com/general-knowledge/basic-chemistry-element-terms-a
Blue, yellow or white glow seen on a diamond when viewed in ultra-violet light or direct sunlight.
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https://www.encyclo.co.uk/local/22070
Emission of light or other radiant energy as a result of and only during absorption of radiation fro
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https://www.encyclo.co.uk/local/22373
No exact match found.
