RT Journal T1 Biological reactions caused by electric currents and by x-rays: A theoretical study of the phenomena of excitation in the nerve by different electric currents and of the biological reactions caused by x-rays, both based upon a common principle JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1949 FD July 23 VO 140 IS 12 SP 1063 OP 1063 DO 10.1001/jama.1949.02900470067025 UL http://dx.doi.org/10.1001/jama.1949.02900470067025 AB Seldom does one find a physician who is at the same time a mathematician and a physicist. When one recalls the startling discoveries made in the field of physics with the help of mathematics—e. g., Einstein's derivation of the relation between energy and mass—it is reasonable to believe that through the medium of mathematical deduction things unknown in biologic and physiologic processes might be discovered.This volume is a mathematical treatise on biologic and physiologic problems. Two subjects are discussed: (1) "the phenomena of excitation caused by electric currents and especially those of excitation of the nerve," and (2) "the biological reactions caused by x-rays are analogous to such an extent that it is highly probable that they may be explained from a common principle." The book is in three parts: part I, General Introduction and Essentials; part II, Electrical Excitation of the Nerve, and part III, Biological Reactions Caused