The Philippine journal of science . Fig. 1. THE MEASURING ARM OF THE PANTOGRAPH. THE SIDE FACING THE OPERATOR OF THE FiQ. 2. THE REVERSE SIDE, SHOWING THE DISTAL END OF THE ARM IN A DIFFERENT POSITION. P1_AXE II. THE ACTION OF ORGANIC PEROXIDES ON THEPHOTOGRAPHIC PLATE. By Bexjamin T. Brooks.(From the Chemical Laboratory, Bureau of Science, Manila, P. I. With the recent- development of our knowledge of radioactivity, theaction of many substances on the photographic plate has been studiedand in some cases this property has been taken as a test for property alon
The Philippine journal of science . Fig. 1. THE MEASURING ARM OF THE PANTOGRAPH. THE SIDE FACING THE OPERATOR OF THE FiQ. 2. THE REVERSE SIDE, SHOWING THE DISTAL END OF THE ARM IN A DIFFERENT POSITION. P1_AXE II. THE ACTION OF ORGANIC PEROXIDES ON THEPHOTOGRAPHIC PLATE. By Bexjamin T. Brooks.(From the Chemical Laboratory, Bureau of Science, Manila, P. I. With the recent- development of our knowledge of radioactivity, theaction of many substances on the photographic plate has been studiedand in some cases this property has been taken as a test for property alone is not sufficient to characterize a body as beingradioactive, as is ver} generally recognized. jSTevertheless papers stillcontinue to find their way into the chemical literature ascribing radio-activity to certain substances which aifect the photographic plate butwhich have little or no semblance to the heavy metals. That the pseudo-radioactive substances are not radioactive in thesame sense as the heavy metals has been shown b) Russell, Saeland andEbler. Kussell has described recently the action on the photographic plate o
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1906
