Question

What is cosmic microwave background radiation composed of?

Answer 1

The cosmic microwave background (CMB, CMBR) is electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology. In older literature, the CMB is also variously known as cosmic microwave background radiation (CMBR) or "relic radiation".

Answer 2

• Microwaves are electromagnetic radiations with wavelengths between (10-³) and (10-1).

• Micowaves cause water and fat molecules to vibrate so they are helpful in microwave cooking ovens.

• They are used in mobile phones and WIFI.

• They find place in radars also which is essential in ships, aircraft and weather forecasters to send signals