TY - JOUR T1 - AN introduction to the science of radio-activity. Y1 - 1909/08/07 N1 - 10.1001/jama.1909.02550060050022 JO - Journal of the American Medical Association SP - 474 EP - 474 VL - LIII IS - 6 N2 - This is an elementary treatise on the physics of radioactivity. It begins with an introductory chapter on the discovery and development of our knowledge of radioactivity. The work proper is divided into three parts. Part I presents in several chapters a description of the radioactive elements and of the phenomena of radioactivity; Part II is an exposition of the theories which explain the phenomena of radioactivity; and Part III considers the practical application of radioactive energy in physical experiments. This plan lends itself to a clear and very interesting development of the subject. The work is frankly offered as an elementary treatise, but it will be found by the student to be a full and satisfactory work. It is hard to imagine a more fascinating chapter in science than that dealing with the physics of radioactivity. It has not overthrown our previous theories of matter and energy—rather it has confirmed SN - 0002-9955 M3 - doi: 10.1001/jama.1909.02550060050022 UR - http://dx.doi.org/10.1001/jama.1909.02550060050022 ER -