Question: Suppose (This is, incidentally, the simplest possible spherical wave. For notational convenience, let (kr wt) u in your calculations.) (a) Show that E

Suppose (This is, incidentally, the simplest possible spherical wave. For notational convenience, let (kr – wt) ≡ u in your calculations.)

(a) Show that E obeys all four of Maxwell's equations, in vacuum, and find the associated magnetic field.

(b) Calculate the Poynting vector. Average S over a full cycle to get the intensity vector I. (Does it point in the expected direction? Does it fall off like r–2, as it should?)

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a i Gausss law VE ii Faradays law t VB VxE 1 r sin 0 30 11 iii Divergence of B B 18 T r r Br 1 r sin ... View full answer

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