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Updated: July 6, 2026
Lenard's experiments certainly favour the hypothesis of their being waves in the luminiferous ether. Professor Rontgen, of Wirzburg, profiting by Lenard's results, accidentally discovered that the rays coming from a Crookes tube, through the glass itself, could photograph the bones in the living hand, coins inside a purse, and other objects covered up or hid in the dark.
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