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Re: Perpetuum mobile
[Re: NeutronBlue]
#353891
01/13/11 21:06
01/13/11 21:06
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Joined: Jun 2006
Posts: 2,640 Earth
Germanunkol
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EvilSOB, ventilator: Why would the ball ever enter the leftside medium? (Be it alcohol+water, water+air, or any other two substances) Even with perfect Valves, I don't think it would enter a medium from the bottom if that medium is denser than the one one it's in.
Last edited by Germanunkol; 01/13/11 21:07.
~"I never let school interfere with my education"~ -Mark Twain
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Re: Perpetuum mobile
[Re: ventilator]
#354173
01/16/11 10:59
01/16/11 10:59
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Joined: Jan 2003
Posts: 4,615 Cambridge
Joey
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http://www.tga-fachplaner.de/Funktions-Prinzip-eines-Osmose-Kraftwerks,QUlEPTI2NDY0NCZNSUQ9MzAwMDI.html
Last edited by Joey; 01/20/11 16:51.
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Re: Perpetuum mobile
[Re: Germanunkol]
#354604
01/20/11 15:49
01/20/11 15:49
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Joined: Feb 2008
Posts: 3,232 Australia
EvilSOB
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MY 'belief' with the ball entering the left-side media is based on the length of the vertical pipes...
Once the pipe is long enough, the ball will pick up enough momentum during its 'fall' to push it across the boundary between light and dense media. Whenever there are two media face-to-face (as at the boundary) there will be an equivalent of 'surface tension'. The greater the difference in density, the greater the tension. So if our two media are close to the same density, then the tension the ball needs to break is less, so the slower it can be moving. BUT THEN the density of the ball needs to be more accurately calculated in order to sink on the right side but float on the left.
Remember, it has been a LONG time since scool for me, so this is all based on rusty theory...
"There is no fate but what WE make." - CEO Cyberdyne Systems Corp. A8.30.5 Commercial
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Re: Perpetuum mobile
[Re: EvilSOB]
#354937
01/23/11 13:41
01/23/11 13:41
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Joined: Oct 2004
Posts: 900 Lgh
rojart
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@EvilSOB I meant just for fun and not the scientific method. ![wink wink](/ubb7/images/graemlins/default_dark/wink.gif) game physics engines wouldn't be good to simulate something like this. they gain or lose energy quite quickly because of float imprecision. Yes, with the same inaccuracies everyone had the same float imprecision, because everyone will have the same results and only one physx engine will be used. Would anyone like to take a part in this contest ala Perpetuum mobile with PhysX engine? Of course, if I find much willing users to the contest, then I give the rules of that contest in a new thread.
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Re: Perpetuum mobile
[Re: EvilSOB]
#355002
01/23/11 23:40
01/23/11 23:40
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Joined: Oct 2006
Posts: 1,245
AlbertoT
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Once the pipe is long enough, the ball will pick up enough momentum during its 'fall' to push it across the boundary between light and dense media.
Consider a square section and a cube , instead of a sphere , just to make it easier The work made by the fluid is: W = P * A * L With P = density of the fluid * H W = density of the fluid * V * H The potential energy of the cube is : U = density of the cube * V * H If U > W Then density of the cube > density of the fluid If the cube enters the pipe the fluid can not lift the cube
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Re: Perpetuum mobile
[Re: AlbertoT]
#355021
01/24/11 08:19
01/24/11 08:19
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Joined: Jan 2003
Posts: 4,615 Cambridge
Joey
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I think he didn't mean enough momentum to push the cube all the way up the fluid.
Edit: what could be possible, though, is a suprafluid substance such as He4. I just don't see how you would keep it on the left side.
Last edited by Joey; 01/24/11 08:21.
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