2006-07-07 18:24:50 · 9 answers · asked by ? 4 in Science & Mathematics ➔ Physics
the answer to this depends on your definition of a "machine". Consider the universe as a whole for instance. The particles in it will always be in thermal motion (thought at a temperature that decreases as the universe expands). Does this count as a machine?
If you're prepared to call anything with moving parts a "machine" then the answer to your question is YES. In fact, in that case pretty much *any* collection of particles in the universe would probably count as perpetually running machine.
Now, if you require something more ... organized ... in your machines, then the laws of thermodynamics probably forbid perpetual motion. Certainly, as you seemed to allude to in your question ... it won't work if you require the particles to be able to do any net work.
2006-07-07 19:50:22 · answer #1 · answered by Aaron 3 · 0⤊ 0⤋
A Perpetual Motion Device is Not Possible, Basically All the Second Law of Thermodynamics says
2006-07-07 18:28:34 · answer #2 · answered by yauwforab 2 · 0⤊ 0⤋
Perpetual running machines denying the first law of thermodynamics would make energy out of nothing.
Pity, impossible.
Perpetual running machines denying the second law of thermodynamics would work without two levels of temperature.
Pity, impossible.
2006-07-07 20:14:52 · answer #3 · answered by Thermo 6 · 0⤊ 0⤋
There are no perpetually running machines, only perpetually running politicians.
2006-07-08 16:09:34 · answer #4 · answered by JOHN E 1 · 0⤊ 0⤋
Hogwash!!! it can not be done. I bet the Russians are close to this machine as we speak. Isn't our solar system a perpetual motion machine?
2006-07-07 18:35:17 · answer #5 · answered by Sammy 4 · 0⤊ 0⤋
I think it is never possible to construct a perpetual machine because it voilates the second law of thermodynamics.
we may sometimes think it is possible.But it will be drawing energy from somewhere and can't create energy itself.
2006-07-07 20:00:28 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I am no expert but I would say it's not possible with irreversible losses unless a machine could manipulate potential energy in a strong magnetic field to overcome losses.
2006-07-07 18:31:07 · answer #7 · answered by havaball4 1 · 0⤊ 0⤋
Nope, not possible. The laws of physics do not allow such things to work.
There are con-men out there claiming such feats, but they can't prove the devices work in scientific settings.
2006-07-07 18:30:33 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Friction will beat them every time. Some devices take longer to run down but they, eventually, always do.
Dan the Answers-Man.
2006-07-07 18:31:57 · answer #9 · answered by Dan S 6 · 0⤊ 0⤋