The First Röntgenogram

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On November 8, 1895 Wilhelm found that if the discharge tube was enclosed with a thick, sealed black carton that excluded all light, and if he worked in a dark room, with a paper plate covered on one side with barium platinocyanide placed in the path. The rays became fluorescent. He experimented with his wife's hand. He placed her hand between the path of the rays and a photographic plate. He then observed the developed plate and noticed that the image of his wife’s hand showed the bones in her hand, her ring, and also the flesh around her hand, which gave a more faint shadow. The image of Wilhelm’s wife’s hand was the first "röntgenogram" ever taken. Since the nature of the "röntgenogram" was unknown, Wilhelm decided to name them X-rays. Röntgen’s

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