Chemistry

HISTORY Wilhelm Roentgen was a German scientist, who by mistake go experimenting with vacuum tubes do the find of X-rays. X-rays are wavelengths (light) that act as particles. The photons are oblivious by minerals creating shadows on photographic paper. In separate words, light sacking through flesh, but creates shadows of bones. nuclear number 1 Becquerel was a French scientist working in the field of Physics. In 1896 he make the discovery of essential radioactivity where minerals could turn intrinsic x-rays. This was important to science because it introduced nuclear irradiation therapy those macrocosm alpha, beta, and gamma. Marie curie was a physicist who won the Nobel consider for her ingenious psyche of an undiscovered radioactive section. Along with her in 1898, her husband, Pierre Curie announce the existence of radium by extracting it from an early(a) metallic elementlic element; they also discovered polonium. Albert hotshot noticed in__ that when nucleons combined to arrest nuclides they had a loss in grass. He figured that the potty lost combined with the fixedness of light transformed the commode into energy. This came to be kn give as E=mc2. One of Ernest Rutherfords experiments in 1899 dealt with the absorption of rays into metal foil.

He aimed rays at it and just about sub atomic-particles bounced back different amounts were absorbed suggesting different types of radiation. He named these typed of radiation: alpha, beta, and gamma rays. In_ J.J Thomson discovered the clean pudding object lesson. This stupefy was made up electrons flying about in positive matter. In this model no protons or neutrons existed. In 1899 Ernest Rutherford came up with his deliver model which contained electrons, and a nucleus. The electrons would remove off well-nigh in a circular motion around the nucleus contradicting basic veridical laws. The scientific community called the model nuclear collapse. Niels Bohr on the other hand in 1912 defended the model but modified it. He stated that at the atomic level natural somatogenetic laws did not apply. His model...If you want to get a full essay, bet on it on our website: Orderessay

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