Electromagnetic radiations are composed of electromagnetic waves that are produced when an electric field comes in contact with the magnetic field.
It can also be said that electromagnetic waves are the composition of oscillating electric and magnetic fields.
The oscillations between an electric and magnetic field produce electromagnetic waves.
In other terms, they are waves made up of an electric and magnetic field that is oscillating.
In terms of physics, electromagnetic radiation is made up of electromagnetic field waves that are travelling through space while carrying radiant electromagnetic energy.
In the electromagnetic field electric field, magnetic field and direction of wave propagation three are perpendicular to each other.
It consists of X-rays, gamma rays, microwaves, infrared, light, and radio waves. The electromagnetic spectrum includes all of these wavelengths.