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phonechan 2013-4-29 11:03 PM

physics

咩係transverse wave同longitudinal wave ?:smile_40:



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cybernike 2013-4-30 03:26 AM

A transverse wave is a wave whose vibration is orthogonal (at 90 deg angle) to the direction of the motion of the wave.
See the first picture at [url]http://en.wikipedia.org/wiki/Transverse_wave[/url]

A longitudinal wave is a wave whose vibration is in the same direction as the direction of the motion of the wave.
See the first picture at [url]http://en.wikipedia.org/wiki/Longitudinal_wave[/url]
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