18
Q:
| A) Henrey Backquerel | B) Max Planck |
| C) Robert Watson Watt | D) Humphrey Davy |
Answer: C) Robert Watson Watt
Explanation:
Explanation:

RADAR stands for Radio Detection and Ranging.
Radar is a detecting system that uses radio waves to determine the range, angle, or velocity of objects. It operates in the ultra-high-frequency of the radio-frequency (RF) spectrum.
Uses ::
To detect
aircraft,
ships,
spacecraft,
guided missiles,
motor vehicles,
weather formations, and
terrain.
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