Doppler_public.pptx (77.35 kB)
The Doppler Effect
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.
http://starguyspeaks.wordpress.com/2014/10/12/on-the-doppler-effect/