Can the reaction between two metals power perpetual motion?

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daniel buchanan

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daniel buchanan  asked the Naked Scientists:
   
Hi guys.

If you can create a mini battery using two metals and an electrolyte, could this not be used as an energy source for a perpetual motion machine, or maybe on larger scales?

Dan, from London

What do you think?

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Offline Don_1

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Can the reaction between two metals power perpetual motion?
« Reply #1 on: 13/05/2009 11:35:47 »
PM cannot have an external power source.
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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Offline rosy

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Can the reaction between two metals power perpetual motion?
« Reply #2 on: 13/05/2009 12:30:21 »
The motion would not be perpetual because the chemical reaction between the metals would eventually go to completion, the battery would run down.