Marie Curie

Marie Curie In her pioneering way, Marie Curie decided, in 1897, to take a physics doctorate. Henri Becquerel, who was studying X-rays, had recently observed that uranium table salt left an impression on a photographic dental plate in spite of its protective envelope. What better subject could in that respect have been for Marie than to try and understand the effect, the energy of these uranic rays? Pierre consented. And so his frail wife set about her work, handling slews of minerals; she noted that another substance, thorium, was "radioactive", a term she herself had coined.

Together, they demonstrate in a major discovery that radioactivity was not the result of a chemical reaction but a property of the element or, to a greater extent specifically, of the atom. Marie then studied pitchblende, a uranic mineral in which she measured a much more intense activity than is present in uranium alone. She deduced that there were other substances besides uranium that were very radioactive, such as polonium and radium...If you want to get a full essay, rig it on our website: Ordercustompaper.com

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