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A wave that oscillates back and forth on an axis that is the same as the axis along which the wave propagates

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The change in direction of a wave passing from one medium to another caused by its change in speed

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Reflection is the change in direction of a wave front at an interface between two different media so that the wave front returns into the medium from which it originated

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It is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle.

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A substance that makes possible the transfer of energy from one location to another, especially through waves

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A wave vibrating at right angles to the direction of its propagation.

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A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium

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Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point

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Is an oscillation accompanied by a transfer of energy.

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A point on the wave is a trough if the displacement of the medium at that point is at a minimum.