What Is the Doppler Effect?

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6. Doppler Radar

Radar was an innovative invention that helped the British Royal Air Force to hold back the Luftwaffe in WWII. It was pivotal in helping the allies to win the war overall. The invention worked by sending out radio waves and listening for any that bounced back off distant objects, thus revealing the presence of oncoming German aircraft.

Early radar, while still very useful, was very crude in comparison to what we have today. In its first stages, it would tell us the location of an object but nothing more. Nowadays, we are able to tell what that object is and, thanks to Doppler radar, how quickly that object is travelling.

Doppler Effect

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