Name:___________________________ Activity: Period and frequency. Periodic motion repeats itself in time after and interval called the "period" [For this we use the symbol T ]. Frequency is another way to express the same thing by indicating how frequently (how many times) the motion repeats itself in a given unit of time. [For this we will use the symbol f ].Frequency and period have a simple mathematical relationship. If the period of the motion is T, then the frequency of the motion is that it happens once per unit of time T. So: 1fT=. The electrical voltage in a wall outlet pulsates at 60 cycles per second.
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