. Archives of physical medicine and rehabilitation . 0 *_Read by Ernst A. Pohle, ,Assistant of the Institute, at theAnnual Meeting of the Radiologi-cal Society of North America. De-troit, Dec. 5, 1922. Dr. Pohlewishes to thank Dr. N. Moore ofGrand Rapids and Dr. GeorgesThomas of Cleveland, who kindlyassisted in the translation of thisarticle, FRIEDRICH DESSAUER, of Medicine at the University of Frankfurt on the Main, Germany solved today is as follows: What is or in even numbers 2 gr. cal. In otherwords, that is the amount of energy thatwill raise the temperature of two gr
. Archives of physical medicine and rehabilitation . 0 *_Read by Ernst A. Pohle, ,Assistant of the Institute, at theAnnual Meeting of the Radiologi-cal Society of North America. De-troit, Dec. 5, 1922. Dr. Pohlewishes to thank Dr. N. Moore ofGrand Rapids and Dr. GeorgesThomas of Cleveland, who kindlyassisted in the translation of thisarticle, FRIEDRICH DESSAUER, of Medicine at the University of Frankfurt on the Main, Germany solved today is as follows: What is or in even numbers 2 gr. cal. In otherwords, that is the amount of energy thatwill raise the temperature of two gramsof water or of human tissue 1 centi-grade. Hence, it is apparent that ahot compress or a swallow of hot waterwill give to the human body much moreof the same energy than this energy ofx-rays. But it is well known that thisquantity of x-rays is capable of produc-ing severe necrosis of cells and even thedeath of a human being. From this itmay be deduced, that x-rays are in-deed a very unusual therapeutic agent,and that the ceils are profoundly in-. Professor Friedrich Dess; nier, Ihl>- Frankfurt am Main, Gern lanv. whose work made deep ro(>ntgen ray therapy fluenced when the high frequencywaves of x-rays are passing throughthem. During radiation the cells areplaced in quickly oscilliating electricand magnetic fields at points where elec-tric and magnetic forces are produced,disappearing and changing in direction,for that IS the description of oscilla-tions in a hitherto neutral place. Thegreat problem which still remains un- the effect of the frequency V of thepulsating field upon the cells? Thenature of the energy produced by thex-ray tube and striking the body is wellknown. We also know of the histo-logical changes which such energy pro-duces. But how the one effects theother, is still a matter of great uncer-tainty. Very often this question hasbeen asked, and very often attemptshave been made to solve it by biologicalmethods of research. The activationand d
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