What is Radar?
Q: What is Radar?
A: Radar is a machine that uses radio waves for echolocation to find objects such as aircraft, ships, and rain.
Q: What are the basic parts of a radar?
A: The basic parts of a radar are the transmitter which creates the radio waves, the antenna which directs them, and the receiver which measures the waves bounced back by an object.
Q: How does radar measure distance?
A: By controlling how often rapid pulses of radar energy are sent out by a transmitter (called its "pulse repetition rate"), and how long it takes for reflected pulse energy to come back to the receiver, one can tell where objects are and how far away. Digital circuits in a receiver calculate distance by multiplying speed of light by time interval between energy pulses.
Q: What was Radar first used for?
A: Radar was first used in 1904 by Christian Hülsmeyer who was given a patent for it (Reichspatent Nr. 165546).
Q: How did Radar become popular during World War II?
A: Radar was vital in the Battle of Britain and other parts of World War II since Axis countries failed to keep up with British and American radar technology during this time.
Q: What does RADAR stand for?
A: RADAR stands for Radio Detection And Ranging. This acronym replaced British initialism RDF (Radio Direction Finding). Nowadays many people think of it as just another word instead of an acronym.
Q: What kinds of radars does FAA use?
A:The FAA (Federal Aviation Administration) use several kinds of radars.
