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Röntgen Memoirs; Volume 3 Of Harper's Scientific Memoirs
Wilhelm Conrad Röntgen, Sir George Gabriel Stokes, Sir Joseph John Thomson
Wilhelm Conrad Röntgen (1845 – 1923) was a German 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 inaugural Nobel Prize in Physics in 1901. In honour of Röntgen's accomplishments, in 2004 the International Union of Pure and Applied Chemistry (IUPAC) named element 111, roentgenium, a radioactive element with multiple unstable isotopes, after him. The unit of measurement roentgen was also named after him.
Interesting to read about some of Rontgen's testing and observations about X-rays. The comparative properties and differences between light and Rontgen ray waves. Some of the more interesting observation that were discussed was the ionized molecules' passing through different elements and the shadow index used to signify the propagation of the wave through various meduims. Its kind of amazing that the propagation is somewhat of a derivative of the thickness, density and spectral distance of the wave. I am not sure that Rontgen actually made a direct connection in his book about the spectral distance, more loosely. He did, however, clearly point out that the Rontgen ray was not inhibited by density and thickness as to how it passed through a medium. He did not really touch on molecular transference, either, but some of his explanations had me contemplating the old Star Trek phase, "Beam me up, Scotty." But in all actuality, without fractionalized molecules, highly agitated molecules might not make it through a solid object as in the sense that the Rontgen ray (X-ray) does through solid objects.