Electric

Photograph, or “Rontgen” or “X” rays. The discovery of the "X” rays was announced by Profe or Rontgen in Nature for January 23, 1896. The e entials are a Crookes’ tub and some electricity, the latter generating some invisible rays in the neighbourhood of the tube, which can be pa ed through all bodies. Some bodies, however, are le permeable than others, and cast a shadow. The discovery is of enormous value in operative surgery, e.g. in finding bullets, and has been greatly developed by M. Becquere’s experiments.