Product Overview
Specifications
Rod Length: 11.75 Inches / 30cm
Rod Diameter: 1/2" / 12mm
Posted by walter clark on Jun 19th 2017
The Ebonite rod charges minus. A glass test tube charges plus. But that is only with some kinds of rubbing cloth. It is really useful to find the right combination of cloth and solid object material to have both plus and minus. (Which can be revealed with an electrometer.)
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