Skosmos: theia_ozcar_thesaurus: Fluorescence

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Fluorescence

[Agrovoc] The sending out of light from a substance which is receiving radiation.(en)
[EnvThes] light of one optical wavelength emitted by a material in response to illumination with light of another wavelength. The ﬂuorescent dyes used as stains in ﬂuorescence microscopy are usually those that emit a particular colour, e.g. red, green, blue, on activation by ultraviolet light.
[Wikipedia] 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, the emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. The most striking example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the spectrum, and thus invisible to the human eye, while the emitted light is in the visible region, which gives the fluorescent substance a distinct color that can be seen only when exposed to UV light. Fluorescent materials cease to glow nearly immediately when the radiation source stops, unlike phosphorescent materials, which continue to emit light for some time after.

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