RT Journal T1 NUclear radiation physics JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1949 FD March 19 VO 139 IS 12 SP 812 OP 812 DO 10.1001/jama.1949.02900290058034 UL http://dx.doi.org/10.1001/jama.1949.02900290058034 AB This volume is an outgrowth of an elementary manual written by the authors within the military establishment first on radiologic safety and later on radiologic defense. Nuclear physics is dealt with from the discovery of radioactivity by Becquerel, 1896, to the present time.It is a well written text and contains many diagrams, tables and charts to supplement the information. One chapter is devoted to the makeup and function of the Geiger-Müller counter, which is one of the most important instruments used in the field. There is a chapter on health physics, written for a specialist skilled in protecting workers in atomic energy plants against stray radiation. Unless the general physician is fairly well versed in mathematics he is not likely to find the book easy reading. It is a textbook and not a popular treatise on the subject. Any one who has had a good course in college physics