light irradiation

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• light beam — noun a column of light (as from a beacon) (Freq. 2) • Syn: ↑beam, ↑beam of light, ↑ray, ↑ray of light, ↑shaft, ↑shaft of light, ↑irradiation …   Useful english dictionary

• irradiation — ir*ra di*a tion ([i^]r*r[=a] d[i^]*[=a] sh[u^]n), n. [Cf. F. irradiation.] [1913 Webster] 1. Act of irradiating, or state of being irradiated; as, irradiation of foods with X rays can preserve their freshness by killing the bacteria that cause… …   The Collaborative International Dictionary of English

• Light therapy — Intervention Bright light therapy is a common treatment for seasonal affective disorder and for circadian rhythm disorders. ICD 10 PCS …   Wikipedia

• light — [adj1] illuminated ablaze, aglow, bright, brilliant, burnished, clear, cloudless, flashing, fluorescent, glossy, glowing, lambent, lucent, luminous, lustrous, phosphorescent, polished, radiant, refulgent, resplendent, rich, scintillant, shining,… …   New thesaurus

• irradiation — (n.) 1580s, from Fr. irradiation, from L. *irradiationem, noun of action from pp. stem of irradiare (see IRRADIATE (Cf. irradiate)). Originally of light (literally and figuratively); of X rays, etc., from 1901 …   Etymology dictionary

• light — I (New American Roget s College Thesaurus) I adj. airy (see levity); frivolous, jesting, jocular, lightsome; giddy, dizzy, flighty; wanton; nimble, agile; flippant, pert, insouciant; humorous; trivial. See cheerfulness, unimportance, impurity,… …   English dictionary for students

• Light — (Roget s Thesaurus) < N PARAG:Light >N GRP: N 1 Sgm: N 1 light light ray beam stream gleam streak pencil Sgm: N 1 sunbeam sunbeam moonbeam Sgm: N 1 aurora aurora GRP: N 2 …   English dictionary for students

• irradiation — Synonyms and related words: X ray dosimetry, X ray therapy, anhydration, arc lighting, black and white, blast freezing, bottling, brining, canning, chiaroscuro, cobalt therapy, contrast, corning, curietherapy, curing, decorative lighting,… …   Moby Thesaurus

• Irradiation illusion — The irradiation illusion is an illusion of visual perception in which a light area of the visual field looks larger than an otherwise identical dark area. It was named by Hermann von Helmholtz around 1867. It arises partly from scattering of… …   Wikipedia

• irradiation — 1. The subjective enlargement of a bright object seen against a dark background. 2. Exposure to the action of electromagnetic radiation ( e.g., heat, light, x rays). 3. The spreading of nervous impulses from one …   Medical dictionary

• Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …   Wikipedia