Gray Matters: Radar Old Hat, but Atmosphere Plays Many Tricks

Summary


Radar is so familiar that we consider it infallible. Part of this trust is based on our knowledge of "radio detecting and ranging," as the technology was first known in World War II.

It seems simple. Pulses of electromagnetic waves are emitted and bounce off an airplane, ship, thunderstorm, car, satellite or planet.

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Gray Matters: Radar Old Hat, but Atmosphere Plays Many Tricks

A parabolic dish catches the reflected pulses and, judging by the direction of their origin and the length of time it took the waves to set out and return, radar operators can...

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