Electromagnetic Waves

Electromagnetic Waves

The existence of medium is not essential for propagation. The Periodic changes takes place in electric and magnetic fields hence it is called Electromagnetic Wave.
Properties:

1. In vacuum E.M waves travel with light velocity.
2. E.M waves can be polarized.
3. E.M waves are transverse in nature.
4. Medium is not required for propagating the E.M waves.
5. E.M waves have momentum.

Example: Radio waves, light waves, thermal radiation, X ray etc.