- An apparition; a specter. - 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. - 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.
Full-spectrum superiority Full-spectrum superiority refers to the cumulative effect of dominance in the air, land, maritime, and space domains and information environment ...
Electromagnetic spectrum management Electromagnetic spectrum management— Planning, coordinating, and managing use of the electromagnetic spectrum through operational, engineering ...
Electromagnetic spectrum control Electromagnetic spectrum control refers to the coordinated execution of joint electromagnetic spectrum operations with other lethal and nonlethal operations ...
Electromagnetic spectrum Electromagnetic spectrum is the range of frequencies of electromagnetic radiation from zero to infinity. It is divided into 26 alphabetically designated bands.
Spread-spectrum radio A form of wireless networking technology that passes data using multiple frequencies simultaneously, is called spread-spectrum radio.