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Unformatted text preview: reference frame. 2b) What equation does have to satisfy in order that you can work with an A that satises, A = 0 or A + /t = 0, even if A doesnt have these properties? 3) Show explicitely that Eqs. 5.46 and 5.47 in your notes yield Maxwells 4 equations. 4) You are familiar with the completely antisymmetric tensor in 3D, ijk . In 4D one can similarly dene a completely antisymmetric tensor ijkn , with 0123 1 and interchange of any two indices means multiplication by 1. And of course if any two indices are the same the tensor is zero. Evaluate F F and note that it is a Lorentz invariant. Can you think of an easy explanation why without doing any explicit calculations. 1...
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 Spring '10
 Blecher
 Current, Magnetism, Friction, Inertia

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