Question

What is cosmic microwave background radiation?

Answer 1

The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling on Earth from every direction with nearly uniform intensity. It is the residual heat of creation--the afterglow of the big bang--streaming through space these last 14 billion years like the heat from a sun-warmed rock, reradiated at night.

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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