A large radar antenna

Radar is a machine that uses radio waves for echolocation to find objects such as aircraft, ships, and rain.

The basic parts of a radar are:

• The transmitter creates the radio waves.
• The antenna directs the radio waves.
• The receiver measures the waves which are bounced back by the object.

By doing this, the radar can locate the object. Radar is used in many different ways. It can measure the speed and number of cars on a road, the amount of water in the air, and many other things.