Famous inventors and their inventions by Cat https://padlet.com/catthenack/qd59extzh1eu Wilhelm Conrad Röntgen en-us 2017-04-27 20:30:30 UTC 2017-04-27 20:50:58 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Clouds.png Wilhelm Conrad Röntgen catthenack https://padlet.com/catthenack/qd59extzh1eu/wish/168755549 was a German/Dutch mechanical engineer and physicist, who, on 8 November 1895, produced and detected electromagnetic radiation in a wavelength range known as X-rays or Röntgen rays, an achievement that earned him the first Nobel Prize in Physics in 1901. In 2004 the International Union of Pure and Applied Chemistry named element 111, roentgenium, a radioactive element with multiple unstable isotopes, after him.]]> 2017-04-27 20:33:30 UTC https://padlet.com/catthenack/qd59extzh1eu/wish/168755549 Life of Wilhelm Röntgen catthenack https://padlet.com/catthenack/qd59extzh1eu/wish/168756729 Born to a German father and a Dutch mother, he attended high school in Utrecht, Netherlands. In 1865 he was expelled from high school when one of his teachers intercepted a caricature. Without a high school diploma, Röntgen could attend university in the Netherlands, but only as a visitor. In 1865, he tried to attend Utrecht University without having the necessary credentials required for a regular student.
In 1874 Röntgen became a lecturer at the University of Strassburg. In 1875 he became a professor at the Academy of Agriculture at Hohenheim, Württemberg. He returned to Strassburg as a professor of physics in 1876, and in 1879, he was appointed to the chair of physics at the University of Giessen.]]> 2017-04-27 20:39:55 UTC https://padlet.com/catthenack/qd59extzh1eu/wish/168756729 catthenack https://padlet.com/catthenack/qd59extzh1eu/wish/168757127 On the 8th of November Röntgen during one of his experiments noticed a new
Röntgen speculated that a new kind of ray might be responsible. 8 November was a Friday, so he took advantage of the weekend to repeat his experiments and make his first notes. In the following weeks he ate and slept in his laboratory as he investigated many properties of the new rays he temporarily termed "X-rays", using the mathematical designation ("X") for something unknown. The new rays came to bear his name in many languages as "Röntgen Rays" (and the associated X-ray radiograms as "Röntgenograms").

At one point while he was investigating the ability of various materials to stop the rays, Röntgen brought a small piece of lead into position while a discharge was occurring. Röntgen thus saw the first radiographic image, his own flickering ghostly skeleton on the barium platinocyanide screen. He later reported that it was at this point that he determined to continue his experiments in secrecy, because he feared for his professional reputation if his observations were in error.

Nearly two weeks after his discovery, he took the very first picture using X-rays of his wife Anna Bertha's hand. When she saw her skeleton she exclaimed "I have seen my death!"[6]

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