Electromagnetic waves are types of waves that do not require a material medium for transmission.
They include radio waves, microwaves, infra-red and gamma rays among others.
Frequency refers to the number of complete oscillations in one second while wavelength is the distance between two successive crests or trough in a transverse wave.
The frequency of electromagnetic waves varies inversely to the wavelength.
Electromagnetic waves with higher frequencies such as x-rays and gamma rays have lower wavelengths.
Those with higher wavelengths, on the other hand, such as microwaves and radio waves have lower frequencies.
