Rensselaer Semi-Weekly Republican, Volume 35, Number 18, Rensselaer, Jasper County, 31 October 1902 — Another X-ray Found. [ARTICLE]

Another X-ray Found.

Professor George P. Barker of the University of Pennsylvania has shown that radium, the singular element obtained from pitch-blende, which possesses the power of throwing off an invisible radiance, may be used as a cheaper substitute for X-rays in photographing concealed objects. No energy has to be expended upon the radinnC for it acts spontaneously and continuously, without apparent loss. It readily defines the bones through the fl£sh and other tissues, and a photograph can be made With it in half a minute.