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the range of wavelengths or frequencies over which electromagnetic radiation extends.

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Wave speed is the speed at which a wave travels.Wave speed is related to wavelength, frequency, and period by the equation wave speed = frequency x wavelength. The most commonly used wave speed is the speed of visible light, an electromagnetic wave.

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the rate at which something occurs or is repeated over a particular period of time or in a given sample.

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the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

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In physics, the wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats, and thus the inverse of the spatial frequency.

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a disturbance on the surface of a liquid body, as the sea or a lake, in the form of a moving ridge or swell.

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a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.