actinic spectrum

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• Actinic light — produce only light at a specific wavelength of 420 nm. This peak wavelength value produces a very blue light.Photography UseThe term was first commonly used in early photography to distinguish light that would expose a film from light that would… …   Wikipedia

• actinic rays — n pl radiation (as in the violet and ultraviolet parts of the spectrum) having marked photochemical action * * * light rays that produce chemical changes. In general, light rays have more of this property the farther they are from the center of… …   Medical dictionary

• actinic rays — n. light rays, esp. the violet and ultraviolet parts of the spectrum, that produce chemical changes, as in photography * * * …   Universalium

• actinic rays — n. light rays, esp. the violet and ultraviolet parts of the spectrum, that produce chemical changes, as in photography …   English World dictionary

• actinic — Relating to the chemically active rays of the electromagnetic spectrum. [G. aktis (aktin ), a ray] * * * ac·tin·ic ak tin ik adj of, relating to, resulting from, or exhibiting chemical changes produced by radiant energy esp. in the visible and… …   Medical dictionary

• actinic ray — noun electromagnetic radiation that can produce photochemical reactions • Syn: ↑actinic radiation • Hypernyms: ↑electromagnetic radiation, ↑electromagnetic wave, ↑nonparticulate radiation • Hyponyms: ↑ …   Useful english dictionary

• actinic — adjective Date: 1844 of, relating to, resulting from, or exhibiting chemical charges produced by radiant energy especially in the visible and ultraviolet parts of the spectrum < actinic light > < actinic keratosis > • actinically adverb …   New Collegiate Dictionary

• actinic balance — Bolometer Bo*lom e*ter, n. [Gr. ? a stroke, ray + meter.] (Physics) An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; called also {actinic balance}, {thermic balance}. S. P. Langley.… …   The Collaborative International Dictionary of English

• actinic radiation — noun electromagnetic radiation that can produce photochemical reactions • Syn: ↑actinic ray • Hypernyms: ↑electromagnetic radiation, ↑electromagnetic wave, ↑nonparticulate radiation • Hyponyms: ↑ …   Useful english dictionary

• actinic — a type of lighting used in aquaria. It provides the blue end of the spectrum for photosynthesis …   Dictionary of ichthyology

• actinic light — the portion of the spectrum comprising the light rays capable of producing chemical effects …   Medical dictionary