Quote:
Originally posted by shaft01
heheh......now that I would have to disagree with.......I dont see how it could possibly be worse.......
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Well, according to
Alessandro Volta here this external "stack" of different metals on the outside would form a dry battery.
But, ok, before that, let's say you use a copper wire, to connect a copper block to an Al rad: you'd have the battery effect happening at that junction where the copper wire meets the Aluminium rad. Back to square one.
One idea often suggested is to induce a voltage to reverse the battery effect. The problem is maintaining an exact voltage to the actual difference, but otherwise it would work.
For those interested, the potential difference between these two metals is (theoretically) 2.04 volts.