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

For example, radio station KUGN broadcasts at a frequency of 590 KHz. What is the wavelength of the radio waves?

wavelength

= c/frequency

= (3 x 10^{8} m/s)/(590 x 10^{3} Hz)

= (3 x 10^{8})/(0.590 x 10^{6}) m

~ 5 x 10^{2} m

= 500 m.

*Updated 1 October 2007*