According come wiki-For surface ar gravity waves, the water fragment velocities are lot smaller than the phase velocity, in many cases. Then have displayed this diagramhttp://en.wikipedia.org/wiki/File:Wave_group.gifHow is bit velocity that a wave connected with the step velocity the the tide generally?Thanks a lot
In general - the fragment velocity is not regarded the tide phase velocity.I"ll explain what i mean:Water particles generally move in a circle and also so don"t go really far.A transverse wave particles may just go up and down. A quick wave will have actually the corpuscle bobbing up and also down faster, yet only if the wavelength is unchanged.If you identify the tide equation to acquire the transverse corpuscle velocity, you"ll find that the bit velocity have the right to vary through time also if the wave velocity is a constant.Aside: the ax "gravity wave" conjures pictures of spirit stars and also general relativity.

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Another pointer: fragment velocity is proportional to tide amplitude; wave velocity is usually independent of tide amplitude (as lengthy as that amplitude is not as well large).
The wave Power team at Edinburgh university went v a many trouble come simulate s waves... Eg..... But what I"m in search of is a side-on that a wave tank which has stuff floating in it, untethered, so the motion is clear.I found this animation showing circular particle motion with travelling tide - yet I"d rather have a real-life example.This vodeo is close; but it has actually tethered objects floating at various depths - you can see a bit of how the yes, really water moves by city hall the objects.I remember, as an undergraduate, exploring with a wave-tang full of murkey water and also how impressive and also clear the particle activity was. Surely someone has actually done this v video?
Of course they room related, since the phase velocity and the particle velocity are aftermath of the exact same equations the motion.
A rapid wave will have actually the corpuscle bobbing up and also down faster, yet only if the wavelength is unchanged.
Sort of. The dispersion relation in reality tells us that the phase speed of the wave is a duty of the wavelength, yet as discussed in the next post:
...particle velocity is proportional to tide amplitude; tide velocity is typically independent of tide amplitude (as lengthy as the amplitude is not also large).

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This is the key point. The bit velocity has to depend on the wave amplitude, if the step speed-wavelength relationship is for straight waves (independent the amplitude).
"Gravity wave" complies with the traditional naming convention, i m sorry names waves after the associatedrestoring force. You are more than likely thinking the "gravitational waves."