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

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..

Aberration :: Aberration (n.) The convergence to different foci, by a lens or mirror, of rays of light emanating from one and the same point, or the deviation of such rays from a single focus; called spherical aberration, when due to the spherical form of the lens or mirror, such form giving different foci for central and marginal rays; and chromatic aberration, when due to different refrangibilities of the colored rays of the spectrum, those of each color having a distinct focus..

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..

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..

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

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..

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

Rainbow :: Rainbow (n.) A bow or arch exhibiting, in concentric bands, the several colors of the spectrum, and formed in the part of the hemisphere opposite to the sun by the refraction and reflection of the sun's rays in drops of falling rain..

Spectrology :: Spectrology (n.) The science of spectrum analysis in any or all of its relations and applications.

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

Vampire :: Vampire (n.) Any one of several species of harmless tropical American bats of the genus Vampyrus, especially V. spectrum. These bats feed upon insects and fruit, but were formerly erroneously supposed to suck the blood of man and animals. Called also false vampire..

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

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.

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

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..

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.

Red :: Red (superl.) Of the color of blood, or of a tint resembling that color; of the hue of that part of the rainbow, or of the solar spectrum, which is furthest from the violet part..

Indium :: Indium (n.) A rare metallic element, discovered in certain ores of zinc, by means of its characteristic spectrum of two indigo blue lines; hence, its name. In appearance it resembles zinc, being white or lead gray, soft, malleable and easily fusible, but in its chemical relation it resembles aluminium or gallium. Symbol In. Atomic weight, 113.4..

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