Posted by Sarah on Tuesday, November 20, 2012 at 12:54pm.
ya gotta tell us something about the size of the pencil or its drawn line, or something. A little proofreading can improve your chances of getting meaningful help.
Then there's the composition of the pencil lead. It's not pure carbon. And are yu assuming that the carbon atoms are jammed right next to each other?
It is experiment electric resistivty
For the pencil line
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