hes, and if the instrument is standardized it may leaf are repeated indefinitely under the influence of a be used as a calorimeter for the measurement of the very small quantity of radium. erties of radium salts and other radio-active bodies, heat evolved by radium. The most curious of M. and… … further says: "It is evident that the research of which influences. The gold leaves are suspended from a Fig. 4.—"Perpetual Motion" Due to Radio-activity. the foregoing is a description, is merely a preliminary glass rod which terminates above in a knot and is survey of the field to be explored,…
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