1

http://www.lon­capa.org/~mmp/applist/doppler/d.htm

http://www.astro.ubc.ca/~scharein/a311/Sim/doppler/Doppler.html

http://library.thinkquest.org/19537/java/Doppler.html

http://paws.kettering.edu/~drussell/Demos/doppler/doppler.html

2

http://paws.kettering.edu/~drussell/Demos/superposition/superposition.html

http://phys23p.sl.psu.edu/phys_anim/waves/indexer_waves.html

http://www.falstad.com/interference/

3

4