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an ordered array of the components of an emission or wave

broad range of related values or qualities or ideas or activities

an ordered array of the components of an emission or wave

broad range of related values or qualities or ideas or activities

An apparition; a specter.

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.

An image formed by the dividing of a ray of light into parts arranged according to their different wavelengths, as in the rainbow or in the passing of light through a prism.

1. The color picture presented when a ray of white light is resolved into its constituent colors by being passed through a prism or reflected from a glass diffraction grating. The colors of the spectrum, arranged according to the increasing rapidity of the vibrations, or decreasing length of the waves, of which they consist, are red, orange, yellow, green, blue, indigo, and violet; of these red, green, and blue-violet are called the primary colors. 2. After-image.

Colored light formed by prismatic decomposition of a ray of light.

The image of something seen continued after the eyes are closed: the colors of light separated by a prism, and exhibited as spread out on a screen:-pl. SPECTRA.

Figure of colored light formed by the dispersion of a beam of light by means of a prism, &c.

An image formed by rays of light refracted, as through a prism, displaying the colors of the rainbow.

An image of something seen, continuing after the eyes are closed; the colours formed on a screen in a darkened chamber by the resolution of light from a luminous body through means of a prism or otherwise.

Analysis, the act or art of ascertaining the character and composition of luminous bodies, or of non-luminous bodies when in a state of combustion, by causing a ray of light from the body desired to be so analysed to pass through a prism, each substance in the spectrum having its own characteristic system of lines.

Variously colored band into which light is decomposed in passing through a prism or grating of glass

A band consisting of a definite succession of colors into which a beam of white light is decomposed when it is passed through a prism or a diffraction grating.

Of any specific substance, its absorption s.

n. [Latin] A visible form; something seen ; -also, an image presented to the eyes after removing them from a bright or coloured object ;-the display of colours resulting from the decomposition of light; or a beam of solar light passing through a small hole into a darkened room, and refracted by a triangular glass prism- the beam or ray is decomposed into seven colours, called prismatic;-pl. Spectra.