http://en.wikipedia.org/wiki/Doppler_effect [2]
http://www.physicsclassroom.com/class/sound/Lesson-3/The-Doppler-Effect-... [3]
http://csep10.phys.utk.edu/astr162/lect/light/doppler.html [4]
http://www.acs.psu.edu/drussell/Demos/doppler/doppler.html [5]
http://www.einstein-online.info/spotlights/doppler [6]
http://www.qrg.northwestern.edu/projects/vss/docs/communications/3-what-... [7]
http://hyperphysics.phy-astr.gsu.edu/hbase/sound/dopp.html [8]
http://www.radartutorial.eu/11.coherent/co06.en.html [9]
http://galileoandeinstein.physics.virginia.edu/more_stuff/flashlets/dopp... [10]
Links
[1] https://hootsgo.org/?q=node/6409
[2] http://en.wikipedia.org/wiki/Doppler_effect
[3] http://www.physicsclassroom.com/class/sound/Lesson-3/The-Doppler-Effect-and-Shock-Waves
[4] http://csep10.phys.utk.edu/astr162/lect/light/doppler.html
[5] http://www.acs.psu.edu/drussell/Demos/doppler/doppler.html
[6] http://www.einstein-online.info/spotlights/doppler
[7] http://www.qrg.northwestern.edu/projects/vss/docs/communications/3-what-is-the-doppler-effect.html
[8] http://hyperphysics.phy-astr.gsu.edu/hbase/sound/dopp.html
[9] http://www.radartutorial.eu/11.coherent/co06.en.html
[10] http://galileoandeinstein.physics.virginia.edu/more_stuff/flashlets/doppler.htm