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transverse wave
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a wave, such as an electromagnetic wave, which oscillates perpendicular to the axis along the line of travel
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standing wave
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a wave that oscillates in place, with nodes where no motion happens
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wavelength
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the distance from one peak to the next in a wave
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amplitude
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the height, or magnitude, of an electromagnetic wave
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frequency
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the number of complete wave cycles (up-down-up) passing a given point within one second (cycles/second)
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resonant system
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a system that displays enhanced oscillation when subjected to a periodic disturbance of the same frequency as its natural frequency
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oscillate
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to fluctuate back and forth in a steady beat
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