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i was just wondering .. when your penny turned black and your heat sink white.. two things.. could you have reversed the polarity? would that have had an effect.. and also if you were using wire that was not solid copper.. or coated with silver or even some other metal wire to go to the batyterys... was any part of that wire in the water?
i would think that you would just want the aligator clip to go in far enough to cover the parts that you want materials transfered from. im a bit rusty on my chem.... so im not sure..
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