| by field vectors, field lines, or equipotential lines | The inverse cube law for dipoles PDF file by Eng |
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| Interactive simulation of an electric field of up to four point charges• - a chapter from an online textbook• - An applet that shows electric field lines as well as potential gradients |
Interactive simulation of an electric field of up to four point charges• , a conductive paper that may be used as a simple analog computer for modelling fields.
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