For example f 10 MHz. Calculate wavelength with the wavelength equation. Wavelength m Wave velocity ms Frequency Hz Wavelength represents the distance between two consecutive frequency wave peaks and is usually used to describe the electromagnetic spectrum.
If the wavelength is given in nanometers you need to convert this.
Electromagnetic waves travel at the speed of light 299792458 meters per second and their frequency and wavelength can be determined by the formulas. The Planck constant is in the units energy time and you can think of it as a conversion factor from energies to frequencies. Where c is the speed of light in meters per second the Greek letter lambda l is the wavelength in meters and the frequency is in cycles per second. Substitute the numerical values of the above into the wavelength equation.