The Doppler effect explained using only skis and a trombone
 

The Doppler effect explained using only skis and a trombone
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So long as skiing and a trombone is involved, there is no such thing as a dull science lesson.

For all of us who fell asleep during science class (I see you), the Doppler effect is the change in frequency or wavelength for a person who is moving relative to the wave source.*

Mmm....what? Don't worry, the video gives a live action example with only two things: skis and a trombone. The skier plays the famous classical music song that we all know, but never knew the name of (it's "Ride of the Valkyries" by Richard Wagner. You're welcome). The skier shows off the differences in wavelength with the song; it's higher pitched when moving towards the camera and dramatically lower when moving away. Read more...

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