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Fluted :: Fluted (a.) Decorated with flutes; channeled; grooved; as, a fluted column; a fluted ruffle; a fluted spectrum..

Caesium :: Caesium (n.) A rare alkaline metal found in mineral water; -- so called from the two characteristic blue lines in its spectrum. It was the first element discovered by spectrum analysis, and is the most strongly basic and electro-positive substance known. Symbol Cs. Atomic weight 132.6..

Violet :: Violet (n.) The color of a violet, or that part of the spectrum farthest from red. It is the most refrangible part of the spectrum..

Yellow :: Yellow (n.) A bright golden color, reflecting more light than any other except white; the color of that part of the spectrum which is between the orange and green..

Ray :: Ray (n.) One of the component elements of the total radiation from a body; any definite or limited portion of the spectrum; as, the red ray; the violet ray. See Illust. under Light..

Spectrum :: Spectrum (n.) A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum..

Red :: Red (n.) The color of blood, or of that part of the spectrum farthest from violet, or a tint resembling these..

Bolometer :: Bolometer (n.) An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; -- called also actinic balance, thermic balance..

Spectral :: Spectral (a.) Of or pertaining to the spectrum; made by the spectrum; as, spectral colors; spectral analysis..

Yellow :: Yellow (superl.) Being of a bright saffronlike color; of the color of gold or brass; having the hue of that part of the rainbow, or of the solar spectrum, which is between the orange and the green..

Spectrum :: Spectrum (n.) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope..

Ultrared :: Ultrared (a.) Situated beyond or below the red rays; as, the ultrated rays of the spectrum, which are less refrangible than the red..

Spectrophotometer :: Spectrophotometer (n.) An instrument for measuring or comparing the intensites of the colors of the spectrum.

Green :: Green (superl.) Having the color of grass when fresh and growing; resembling that color of the solar spectrum which is between the yellow and the blue; verdant; emerald.

Spectrum :: Spectrum (n.) An apparition; a specter.

White :: White (superl.) Reflecting to the eye all the rays of the spectrum combined; not tinted with any of the proper colors or their mixtures; having the color of pure snow; snowy; -- the opposite of black or dark; as, white paper; a white skin..

Green :: Green (n.) The color of growing plants; the color of the solar spectrum intermediate between the yellow and the blue.

Microspectroscope :: Microspectroscope (n.) A spectroscope arranged for attachment to a microscope, for observation of the spectrum of light from minute portions of any substance..

Fraunhofer Lines :: Fraunhofer lines () The lines of the spectrun; especially and properly, the dark lines of the solar spectrum, so called because first accurately observed and interpreted by Fraunhofer, a German physicist..

Ultraviolet :: Ultraviolet (a.) Lying outside the visible spectrum at its violet end; -- said of rays more refrangible than the extreme violet rays of the spectrum.

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