- #1
lion8172
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In the chapter on radiation (Chapter 11), Griffiths notes that an electric monopole does not radiate, but also that a point charge of electric dipole moment \mathbf{p} (t) = q \mathbf{d} (t) (where \mathbf{d} (t) is the instantaneous coordinate of the charge with respect to a fixed origin ) radiates with power
P = \mu_0 q^2 a^2/(6 \pi c), where \mathbf{a}(t) = \ddot{\mathbf{p}} (t). By "monopole," does he simply mean a point charge that doesn't move?
P = \mu_0 q^2 a^2/(6 \pi c), where \mathbf{a}(t) = \ddot{\mathbf{p}} (t). By "monopole," does he simply mean a point charge that doesn't move?
