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Period

In any repeating phenomenon the time it takes for one repetition is known as the period. Repeating waveforms, such as sine waves, are called periodic waveforms for this reason. Example: A sine wave at a frequency of 100 Hz repeats 100 times per second. Its period is how many seconds it takes it to repeat, which in this case is .01 seconds, or one-one hundredth of a second.

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