Paul Villard

Paul Villard (1860–1934) was a French scientist. He discovered gamma rays while studying radium.

Paul Villard Media

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  Taking an X-ray image with early Crookes tube apparatus in 1896. The Crookes tube is visible in the centre. The standing man is viewing his hand with a fluoroscope screen. This was a shortcut method for setting up the tube.No precautions against radiation exposure are being taken.