In the following paragraphs will be given a brief account of the most important physical factors involved in the therapeutic applications of radium. A complete presentation will not be attempted; only the essential points will be taken up somewhat in detail. Radium therapy has passed the preliminary stage of empiric experimentation, and is now recognized as an essential of the medical armamentarium.The early history of radium is so well known that it is hardly necessary to dwell on it. It suffices to say that the property of radioactivity was discovered by Henri Becquerel in 1895, soon after the discovery of the roentgen rays by Roentgen, and that radium was discovered by Madame Curie in the same year. These discoveries "revolutionized" our ideas of physics and chemistry, in the popular sense of the word; but strictly speaking they did not. The laws of chemistry and physics are just as
FAILLA G. THE PHYSICAL BASIS OF RADIUM THERAPY. Arch Derm Syphilol. 1921;3(2):133–141. doi:10.1001/archderm.1921.02350140025005
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