I heard that Griffith's Electrodynamics is at a similar level of Purcell's book on electricity; is it fine if someone goes into a graduate level electrodynamics book right after Purcell?
I am reading Jackson's book on classical electrodynamics.
It said in page 412 to 415 (3rd edition) that the total power radiated by a
dipole is proportional to k^4 (equation 9.24)
quadrupole is proportional to k^6 (equation 9.49)
But why does the linear antenna at page 412, which is a dipole...
Homework Statement
1.12 -
Prove Thomson's theorem : If a number of conducting surfaces are fixed in
position and a given total charge is placed on each surface, then the electrostatic
energy in the region bounded by the surfaces is a minimum when the
charges are placed so that every surface...
Hi there, im reading Chapter 9 of Jackson Classic Electrodynamics 3rd edition, and I don't see why this equality is true, it says "integrating by parts", but I still don't know... any help?
http://imageshack.com/a/img673/9201/4WYcXs.png [Broken]