👉 Wavelength is a measure of the distance between two consecutive crests or troughs in an electromagnetic wave. It is defined as the reciprocal of the frequency of the wave. The wavelength of an electromagnetic wave can be determined by measuring its frequency and dividing it by the speed of light (c). For example, if the frequency of a light wave is 600 Hz and the speed of light is 3 x 10^8 m/s, then the wavelength of the wave would be