Marcus Williams Posted September 4, 2012 Share Posted September 4, 2012 Today I asked my professor if we could perform the experiement when you submerge a copper penny in nitric acid. He said that he would consider doing it if I provided an etching. I don't possess that much knowledge on etchings, but could someone explain to me what they are and what the best ones would be for such an experiment and if at all possible the least expensive? Thanks in advance! Link to comment Share on other sites More sharing options...
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