The Philippine journal of science . D oVi 2 oO. LlJH<-IQ. A QUANTITATIVE DETERMINATION OF THE RADIUM EMANA-TION IN THE ATMOSPHERE AND ITS VARIATION WITHALTITUDE AND METEOROLOGICAL CONDITIONS By J. R. Wright and O. F. Smith {From the Department of Physics, University of the Philippines) One text figure PART I. A QUANTITATIVE DETERMINATION OF THE RADIUM EMANA-TION IN THE ATMOSPHERE AT MANILA During the last few years the attention of physicists has beendirected more and more to a study of atmospheric complete study of the problem involves a thorough investiga-tion of several mor
The Philippine journal of science . D oVi 2 oO. LlJH<-IQ. A QUANTITATIVE DETERMINATION OF THE RADIUM EMANA-TION IN THE ATMOSPHERE AND ITS VARIATION WITHALTITUDE AND METEOROLOGICAL CONDITIONS By J. R. Wright and O. F. Smith {From the Department of Physics, University of the Philippines) One text figure PART I. A QUANTITATIVE DETERMINATION OF THE RADIUM EMANA-TION IN THE ATMOSPHERE AT MANILA During the last few years the attention of physicists has beendirected more and more to a study of atmospheric complete study of the problem involves a thorough investiga-tion of several more or less closely related factors, one of themost important being the determination of the amount of radio-active substances in the atmosphere of the earth. The presence of radioactive substances in the atmosphere wasfirst conclusively shown by the work of Elster and Geitel in1900. Making use of the discovery that an active deposit wascollected on a negatively charged wire exposed in the presenceof the emanation from thorium or radium, they st
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1906
