Off Topic — HabitableZone

Off Topic » in reply to re: Links

re: Links did not work
Johannes — (archived)

http://www.ehow.com/video_2388880_do-undulations-belly-dancing.html = Undulations

http://www.kettering.edu/~drussell/Demos/waves/wavemotion.html = Longitudinal and transverse waves are interesting.

http://www.kettering.edu/~drussell/Demos/doppler/doppler.html = Doppler effect and sonic boom

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