Conversation so far:
what are the different applications of the em radiation
EM waves are used to transmit TV or telephone or wireless signals and energies. They are responsible for the transmission of energy.
what types of em radiation are there
Radio waves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays are all types of electromagnetic radiation.

Question: what are the waves made of
Self-contained rewrite: what are em waves made of