Chemistry

HISTORY Wilhelm Roentgen was a German scientist, who by shift go experimenting with vacuum tubes do the breakthrough of X-rays. X-rays are wavelengths (light) that toy as particles. The photons are absorbed by minerals creating shadows on photographic paper. In separate words, light going through flesh, exclusively creates shadows of bones. atomic number 1 Becquerel was a French scientist working(a) in the field of Physics. In 1896 he made the discovery of natural radioactivity where minerals could turn natural x-rays. This was important to apprehension because it introduced nuclear radiation therapy those macrocosm alpha, beta, and gamma. Marie curie was a physicist who won the Nobel Prize for her ingenious psyche of an un notice radioactive element. on with her in 1898, her husband, Pierre Curie announced the existence of celestial longitude by extracting it from another metallic element; they also discovered polonium. Albert Einstein noticed in__ that when nucleons feature to beget nuclides they had a privation in grass. He figured that the commode lost combined with the speed of light transformed the mass into energy. This came to be kn deed over as E=mc2. One of Ernest Rutherfords experiments in 1899 dealt with the engrossment of rays into metal foil.

He aimed rays at it and around subatomic-particles bounced back divergent 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 plum pudding model. This model was made up electrons flight of steps around in positive matter. In this model no protons or neutrons existed. In 1899 E rnest Rutherford came up with his own model ! which contained electrons, and a nucleus. The electrons would travel around in a circular proceeding around the nucleus contradicting basic tangible laws. The scientific association 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 somatogenic laws did not apply. His model...If you ask to get a full essay, post it on our website: OrderEssay.net

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