I’ve made some minor updates to my old class notes from the 2011 phy450h1s (relativistic electrodynamics) course I took:
https://sites.google.com/site/peeterjoot/math2011/phy450.pdf
(I’ve switched this notes collection, as well as some others, to a better looking latex book template, one that I also used for my continuum mechanics class notes). While making that change I also switched things from a chapter heading per lecture, to a couple more logical chapter headings, which makes things easier to navigate.
