Relative frequency formula

We denote frequency by Frequency is measured in Hertz = Hz = 1/seconds . If a wave with a wavelength of 2 meters is going by at a speed of 6 meters/second, then 3 complete waves go by in 1 second. That is, the frequency is 6/2 = 3 waves/second, or 3 Hz. ( See units ).Thus.

Convert your wavelength into meters. Divide the speed of light, ~300,000,000 m/s, by the wavelength in m . This gives you the wave’s frequency.

To calculate frequency, divide the number of times the event occurs by the length of time . Example: Anna divides the number of website clicks (236) by the length of time (one hour, or 60 minutes). She finds that she receives 3.9 clicks per minute.