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Asked by astroaaron to Ben, Jony, Katharine, Mark, Peter on 18 Nov 2011.
Question: Do you think perpetual motion can ever be achieved, or will the laws of thermodynamics defiantly never allow it?
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Peter Williams answered on 18 Nov 2011:
Entropy always increases, i’m afraid. Perpetual motion is out
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Mark Basham answered on 18 Nov 2011:
Yeah, Peters right, Dosn’t stop people trying though and some of the inventions look so cool, even if they don’t work.
Comments
astroaaron commented on :
But when the earth spins, does it not count as perpetual motion, because there are no forces stopping it spinning? 🙂
Mark commented on :
Actually the earth is slowing down slowly, check out the answer to /subatomicn11-zone/answer/?p=1568
Peter commented on :
Nope – and the earth’s rotation is slowing as angular momentum is transferred to the moon’s orbit.
astroaaron commented on :
but what about the electron then? the electron keeps spinning and there is nothing that can stop it 🙂