Answers

2016-07-16T18:36:26+08:00
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency.

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2016-07-17T11:01:16+08:00
Frequency describes the number of waves that pass a fixed place in a given amount of time.
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