FLUORESCENCE
\flʊ͡əɹˈɛsəns], \flʊəɹˈɛsəns], \f_l_ʊə_ɹ_ˈɛ_s_ə_n_s]\
Definitions of FLUORESCENCE
- 2010 - New Age Dictionary Database
- 1913 - Webster's Revised Unabridged Dictionary
- 2010 - Medical Dictionary Database
- 1919 - The Winston Simplified Dictionary
- 1920 - A practical medical dictionary.
- 1919 - The Concise Standard Dictionary of the English Language
- 1914 - Nuttall's Standard dictionary of the English language
- 1898 - American pocket medical dictionary
- 1916 - Appleton's medical dictionary
- 1871 - The Cabinet Dictionary of the English Language
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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 has of modifying the light incident upon it. The light emitted by fluorescent substances is in general of lower refrangibility than the incident light.
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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.
By Oddity Software
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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 has of modifying the light incident upon it. The light emitted by fluorescent substances is in general of lower refrangibility than the incident light.
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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.
By Noah Webster.
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The property of emitting radiation while being irradiated. The radiation emitted is usually of longer wavelength than that incident or absorbed, e.g., a substance can be irradiated with invisible radiation and emit visible light. X-ray fluorescence is used in diagnosis.
By DataStellar Co., Ltd
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The quality existing in certain transparent or clear bodies of giving off under the action of light a color differing from their own; the property possessed by certain substances of becoming luminous or bright when exposed to X-rays or other forms of light.
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Fluoresce.
By William Dodge Lewis, Edgar Arthur Singer
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The property of rendering visible the ultraviolet or actinic rays of the spectrum or of becoming self-luminous when exposed to the light or to other rays.
By Stedman, Thomas Lathrop
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The property, possessed by some transparent bodies, of giving off, when illuminated, light different in color from their own and from that of the light thrown upon them.
By James Champlin Fernald
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A peculiar blue appearance which certain substances, such as a solution of quinine, exhibit when the sun's rays fall on them.
By Nuttall, P.Austin.
By Willam Alexander Newman Dorland
Word of the day
Hydrocorallia
- division Hydroidea, including those genera that secrete a stony coral, as Millepora and Stylaster. Two forms of zooids life project from small pores in the coral resemble other hydroids. See Millepora.