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• Spectrum — Spec trum, n.; pl. {Spectra}. [L. See {Specter}.] 1. An apparition; a specter. [Obs.] [1913 Webster] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed… …   The Collaborative International Dictionary of English

• Spectrum analysis — Spectrum Spec trum, n.; pl. {Spectra}. [L. See {Specter}.] 1. An apparition; a specter. [Obs.] [1913 Webster] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and… …   The Collaborative International Dictionary of English

• Spectrum analysis — also known as Emission Spectrochemical Analysis is the original scientific method of charting and analyzing the chemical properties of matter and gases by looking at the bands in their optical spectrum. The empirical laws of spectrum analysis are …   Wikipedia

• Spectrum Brands — (NYSE|SPC) is a diversified company established in 2005 as the successor company to Rayovac.The company manufactures and markets batteries under the Rayovac and Varta brand names, electric personal care appliances under the Remington brand name,… …   Wikipedia

• Spectrum Games — is the trading name of a small company that designs role playing games (RPGs). It was founded in 2000 (as Spectrum Game Studios, which still the company s legal name) by Cynthia Celeste Miller and Sabrina Belle (the latter of whom is no longer… …   Wikipedia

• spectrum — /spek treuhm/, n., pl. spectra / treuh/, spectrums. 1. Physics. a. an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass: often the band of colors… …   Universalium

• Spectrum (arena) — The Spectrum The Spectrum America s Showplace Broad Street …   Wikipedia

• Spectrum analyzer — A spectrum analyzer Spectrum analyzer display A spectrum analyzer measures the magnitude of an input signal versus frequency with …   Wikipedia

• spectrum — 1. The range of colors presented when white light is resolved into its constituent colors by being passed through a prism or through a diffraction grating : red, orange, yellow, green, blue, indigo, and violet …   Medical dictionary

• spectrum —   n. (pl. ra) series of images, colours, etc., formed when ray of radiant energy is dispersed into its component parts.    ♦ spectrobolograph, n. photogographic record of lines of infra red spectrum.    ♦ spectrogram, n. representation of a… …   Dictionary of difficult words

• atomic spectrum — noun (physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element • Topics: ↑physics, ↑natural philosophy • Hypernyms: ↑spectrum • Part Meronyms: ↑ …   Useful english dictionary