Answer:
Electromagnetic waves
Explanation:
Literally, electromagnetic waves refers to waves that are made up of oscillating electric and magnetic waves.
These waves are created due to the vibrations between an electric field and a magnetic field, propagating through space, carrying electromagnetic radiant energy.
There are 7 categories of this type of waves.
1. Radio Waves:
2. Microwaves
3. Infrared Waves
4. Visible Light Rays.
5. Ultraviolet Waves
6. X-rays: Penetrating Radiation
7. Gamma Rays