10. 
    Fluorescence
    The slow emission of longer wavelength light following the absorption of shorter wavelength radiation. Fluorescence is common with aromatic compounds with several rings joined together. Phosphorescence is similar but may persist long after the stimulating
    Found op http://www.chemicalglossary.net/definition/775-Fluorescence
    
    
11. 
    fluorescence
    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 10-8 seconds : phosphorescence is a phenomenon with a longer or much lon...
    Found op http://www.encyclo.co.uk/visitor-contributions.php
    
    
12. 
    Fluorescence
    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 sp...
    Found op http://www.encyclo.co.uk/webster/F/49
    
    
13. 
    Fluorescence
    Flu`o·res'cence noun A property possessed by fluor spar, uranium glass, sulphide of calcium, and many other substances, of glowing without appreciable rise of temperature when exposed to light or to ultra-violet rays, cathode rays, X rays, etc.
    Found op http://www.encyclo.co.uk/webster/F/49
    
    
14. 
    fluorescence
    <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 phe...
    Found op http://www.mondofacto.com/facts/dictionary?fluorescence
    
    
15. 
    fluorescence
    (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...
    Found op http://www.encyclo.co.uk/local/21001
    
    
16. 
    Fluorescence
    • (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 surf...
    Found op http://thinkexist.com/dictionary/meaning/fluorescence/
    
    
17. 
    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 tu...
    Found op http://www.britannica.com/eb/a-z/f/40
    
    
18. 
    Fluorescence
    Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. However, when the absorbed electromagnetic ra...
    Found op http://en.wikipedia.org/wiki/Fluorescence
    
    
19. 
    fluorescence
    luminescence observed only during irradiation NOTE - Luminescence is defined in 845-04-18.
    Found op http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=394-38-60
    
    
20. 
    fluorescence
    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
    Found op http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=845-04-20
    
    
21. 
    fluorescence
    luminescence that occurs essentially only during irradiation
    Found op http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-02-81
    
    
22. 
    fluorescence
    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...
    Found op http://www.daviddarling.info/encyclopedia/F/fluorescence.html
    
    

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