<P> Frequency is the number of occurrences of a repeating event per unit of time . It is also referred to as temporal frequency , which emphasizes the contrast to spatial frequency and angular frequency . The period is the duration of time of one cycle in a repeating event , so the period is the reciprocal of the frequency . For example , if a newborn baby 's heart beats at a frequency of 120 times a minute , its period -- the time interval between beats -- is half a second ( that is , 60 seconds divided by 120 beats ) . Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena , such as mechanical vibrations , audio signals ( sound ) , radio waves , and light . </P>
<P> Frequency is the number of occurrences of a repeating event per unit of time . It is also referred to as temporal frequency , which emphasizes the contrast to spatial frequency and angular frequency . The period is the duration of time of one cycle in a repeating event , so the period is the reciprocal of the frequency . For example , if a newborn baby 's heart beats at a frequency of 120 times a minute , its period -- the time interval between beats -- is half a second ( that is , 60 seconds divided by 120 beats ) . Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena , such as mechanical vibrations , audio signals ( sound ) , radio waves , and light . </P>
the reciprocal ( inverse ) of the period of oscillation is
the reciprocal ( inverse ) of the period of oscillation is
Frequency
Frequency