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#1 2015-03-31 05:14:19
Equilibrium in electrostatic field
A test charge is placed in a null point in an electrostatic field. Show that such an equilibrium is never stable
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
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