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What is the Doppler Effect?

submitted by Farhad2000

1 decade 6 years 1 month 1 week ago

Why does the sound of a car change as it passes you?

2 Comments

jwray

says...

This is also how we can tell how fast stars are moving towards/away from us.
This is how police speed detectors work
Some sonars and radars use this to determine the velocity of the target.
This is how a radar detector can tell whether the police are moving towards you or away from you.