Water surface

[Fu-Kwun Hwang]

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There are 4 translations, select to view translated versionBahasa Indonesia - Indonesian(by maskun: 0)العربية - Arabic(by hatim: 0)Español - Spanish(by silvia gabriela: 93)Türkçe - Turkish(by kelme: 19)
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Some waves in nature are neither transverse nor longitudinal, but a combination of the two.
When a water wave travels on the surface of deep water, water molecules at the surface move in nearly circular paths,  as shown in the following java applet.



The water surface is drawn as a series of crests and troughs.

Usage：

Click and drag the left mouse button will create a rectangulararea.
The wavelength of the wave is determined from the width of the area.

The amplitude of the wave is determined from the height of the area.

Click the right mouse button toggle the animation. (pause /resume)
Click the mouse button twice quickly to change the direction of the wave.

Notice that the disturbance has both tranverse and longitudinal components.
As the wave passes, water molecules at the troughs move in the direction of the wave,
and molecules at the crests move in the opposite direction.

There is no Net displacement of a water molecule  after the passage of any number of complete wave.

Registed user can get files related to this applet for offline access.
Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
If java program did not show up, please download and install latest Java RUN TIME

There are 4 translations, select to view translated versionBahasa Indonesia - Indonesian(by maskun: 0)العربية - Arabic(by hatim: 0)Español - Spanish(by silvia gabriela: 93)Türkçe - Turkish(by kelme: 19)
Higher number at the end means more translation been done.

or

[reign16]

Oh thank you for sharing that kind of software...



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[Wieslaw]

There is something wrong with the model, not just with the applet. As you can easily see the distance between the particles on the surface changes. Therefore some of the particles of the surface must go inside. I guess that the theory does not include that particles have volume.  It treats them as they were points. Can anybody solve the puzzle?

[johnytin]

I wish I could store water in a separate tank and let it dechlorinate for at least 1 day as you suggested. My problem is I am living in an apartment, so there is no more room for such a big container . I will definitely follow that method for WC when I move to a bigger house (after graduating from college and find a job, I guess

[Fu-Kwun Hwang]

There is something wrong with the model, not just with the applet. As you can easily see the distance between the particles on the surface changes. Therefore some of the particles of the surface must go inside. I guess that the theory does not include that particles have volume.  It treats them as they were points. Can anybody solve the puzzle?

Yes. It is just a simple model. The particles are treated as points and it did not consider the conservation of the whole volume (it is conserved on average).

[Jessica S]

Well, great work! You have helped me to improve my knowledge about this field. Thank you so much for sharing.-*-

[obavtorips]

I am working on a miniature golf course that I would like to have a stream flowing through it.  But I dont see a way to model the surface of the water aside from simple pools.  I am hoping there is a script out there that can model the physics to see where the water creates ripples.