X Ray Tube
   The knowledge of the new "X Rays" discovered by Wilhelm Konrad Roentgen in late 1895 spread with amazing rapidity. He published the phenomena and their interpretation promptly, and the first X rays in this country were made early the next year. As it turns out, anyone with a discharge tube excited by an  Induction Coil had already been generating X rays!

   The picture above shows an instructor at the Kenyon Military Academy making an X ray of his hand ca. 1905. Note the complete lack of shielding. 

   The tube which he used is still employed for demonstrations.

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