Graduate theses and dissertations on broadcasting: 1956–1958

A discussion of state and local taxation of broadcast stations appeared in the very first issue of the Journal of Broadcasting (1:70–74, Winter 1956–57), and is now updated to cover important cases and findings of recent years in a number of states. The taxes proposed raise not only questions of income dillution, but of federal vs. state/local regulation of broadcasting. Mr. Kennedy is completing work on an MA degree in telecommunications at the University of Southern California.     

Radiocarbon geophysics

Radiocarbon dating is, and remains, one of the most powerful methods of dating archaeological artefacts. Initially, it was assumed that the carbon-14 content of atmospheric carbon dioxide had remained constant, but latterly it has been shown that this assumption is not valid. It has now proved possible, mainly by correlation with tree-growth rings, to measure historic fluctuations in carbon-14 content and to make the necessary corrections—of up to one thousand years—to the conventionally calculated dates.