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A comment on Inside tiny tubes, water turns solid when it should be boiling. Parent comment

Re:Inside tiny tubes, water turns solid when it should be bo... by kriztw on Tuesday November 29, 2016 @07:34AM (#13062641)
It sounds like you are proposing a perpetual motion machine, which cannot work because of the laws of thermodynamics (see https://en.wikipedia.org/wiki/Perpetual_motion).
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Re:Inside tiny tubes, water turns solid when it should be bo... by ceejay on Tuesday November 29, 2016 @08:14AM (#13062810)
Don't get me wrong. I agree with the laws of thermodynamics :) , but just like we exploit a "closed loop" / "seemingly perpetual" system between the moon and the oceans, or flowing rivers, couldn't there exist other "closed loop" systems? After all, on the scale of a human life that closed loop system (between moon and oceans) is, for all practical purposes, perpetual.
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Re:Inside tiny tubes, water turns solid when it should be bo... by pjc50 on Tuesday November 29, 2016 @08:54AM (#13063011)
The water cycle is not "perpetual": it depends on input from the sun.

The tides are not "perpetual": they depend on gradually taking energy from the orbit of the moon.

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Re:Inside tiny tubes, water turns solid when it should be bo... by cmdrfred on Tuesday November 29, 2016 @08:27AM (#13062871)
Sure you can, get me a moon and I'll show you how.
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Re:Inside tiny tubes, water turns solid when it should be bo... by witty_username on Tuesday November 29, 2016 @08:49AM (#13062978)
Yes, but where does the energy come from for your perpetual machine?
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