The Doppler Effect

2014-10-12T17:53:47Z (GMT) by Adric Riedel
<p>This presentation of 7 animations demonstrates the Doppler effect, which is used by astronomers to learn about the motions of stars, and to find planets.  The principle is simple - in fact, even the animations consist only of expanding circles - but the effect is impressive.</p> <p> </p> <p></p>