5
APOLOGIA
ThesearemylecturenotesforPhysics 430 and431,writtenanumberofyears
ago. Theyarestillabitincomplete: Chapters 19 and 20 remaintobewritten,and
Chapter 23 isunfinished. PerhapsthisyearIwillgetaroundtoit. Itislikelythat
therearestill many misprintsscattered here andthereinthe text,and Iwill be
gratefulifthesearebroughttomyattention.