Fluorescent-lamp
noun
1.
a tubular electric discharge lamp in which light is produced by the fluorescence of phosphors coating the inside of the tube.
noun
1.
a type of lamp in which an electrical gas discharge is maintained in a tube with a thin layer of phosphor on its inside surface. The gas, which is often mercury vapour, emits ultraviolet radiation causing the phosphor to fluoresce
2.
a type of lamp in which an electrical discharge is maintained in a tube containing a gas such as neon, mercury vapour, or sodium vapour at low pressure. Gas atoms in the discharge are struck by electrons and fluoresce
fluorescent lamp
(fl-rěs’ənt)
An electric lamp that produces light through fluorescence. In most fluorescent lamps, a mixture of argon and mercury gas contained in a glass bulb is stimulated by an electric current, producing ultraviolet rays. These rays strike a fluorescent phosphor coating on the interior surface of the bulb, causing it to emit visible light. Fluorescent lamps are much more efficient than incandescent lamps because very little energy is lost as heat. Compare incandescent lamp.
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- Fluoric
[floo-awr-ik, -or-] /fluˈɔr ɪk, -ˈɒr-/ adjective 1. Chemistry. pertaining to or obtained from . 2. Mineralogy. of, relating to, or derived from . /fluːˈɔːrɪk/ adjective 1. of, concerned with, or produced from fluorine or fluorspar
- Fluoridate
[floo r-i-deyt, flawr-, flohr-] /ˈflʊər ɪˌdeɪt, ˈflɔr-, ˈfloʊr-/ verb (used with object), fluoridated, fluoridating. 1. to introduce a into: to fluoridate drinking water. /ˈflʊərɪˌdeɪt/ verb 1. to subject (water) to fluoridation v. 1949, back-formation from fluoridation. Related: Fluoridated; fluoridating. fluoridate (flr’ĭ-dāt’) To add fluorine or a fluoride to something, especially to drinking water in order […]
- Fluoride
[floo r-ahyd, flawr-, flohr-] /ˈflʊər aɪd, ˈflɔr-, ˈfloʊr-/ noun, Chemistry. 1. a salt of hydrofluoric acid consisting of two elements, one of which is fluorine, as , NaF. 2. a compound containing fluorine, as methyl fluoride, CH 3 F. /ˈflʊəˌraɪd/ noun 1. any salt of hydrofluoric acid, containing the fluoride ion, F– 2. any compound […]