Physics
Basic

Frequency and Period

Frequency is the inverse of the period.

Formula

f=1Tf = \frac{1}{T}

Variables

fFrequency (Hz)
TPeriod (s)

Example

A wave with period 0.02 s has frequency f = 1/0.02 = 50 Hz.

Did You Know?

Frequency and period are reciprocals — a 50 Hz current reverses direction 100 times a second.

wavesfrequencyperiod