books.google.com.au - Classical Electrodynamicscaptures Schwinger’s inimitable lecturing style, in which everything flows inexorably from what has gone before. Novel elements of the approach include the immediate inference of Maxwell’s equations from Coulomb’s law and (Galilean) relativity, the use of action and stationary...http://books.google.com.au/books/about/Classical_Electrodynamics.html?id=SVz_lRkP09kC&q=diffraction&utm_source=gb-gplus-shareClassical Electrodynamics
