Electromagnetic Radiation

The emanation of an electromagnetic field from a source through space.

The electromagnetic wave consists of perpendicular oscillations in the electric and magnetic fields, moving at a speed of 2.99792458108 ms-1 in a vacuum away from the source.

Examples: gamma rays, x-rays, ultraviolet light, visible light, infrared radiation, and radio waves are all electromagnetic waves.

See also: Electromagnetic Field.

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Subjects: Electromagnetism Electronics