1900-1915+(Smedile.Enrique)

December 18, 1852- August 25, 1908 Country of Origin: France Year of DIscovery: 1903
 * Henri Becquerel**

Henri came from a family of distinguished scientist. In 1892 he took over his father’s position and was appointed as an assistant at the museum of Natural History where he was the Chair of Applied Physics. In 1892 he became the Professor of Applied physics in the Department of Natural Science in the Paris Museum. In 1895 he became a professor at the Polytechnic. He was awarded half a Nobel Prize with Marie Curie. His biggest discovery was that radiation did not require an external source for it to occur. In 1903 he noticed this after placing uranium salts on top of photographic plates in his sock draw. After a few days he noticed that the plates showed signs of being strongly exposed. This meant that even without the energy of the sun, the uranium still continued to decay.

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Albert Einstein March 14, 1879-April 18, 1955 Country of Origin: Germany Year of Discovery: 1905 Einstein received his degree for physics teaching from the Swiss Federal Polytechnic School in Zurich. He was unable to find a teaching job so he took a position in the Swiss Patient Office; it is there that he wrote many of his theories. In 1905 he received his doctorate degree. Due to being a Jew in Europe during WWII, Einstein changed his citizenship multiple times. He went from a German, to Swiss, then finally an American citizen. Einstein was also a major political advocate. He was offered the presidency of Israel which he declined. He is known to have had a very clear understanding of physics and is often referred to as the father of modern physics. Although Einstein had many theories, the one he is most known for is the theory of relativity. This theory describes how at different points of reference determine how space and time will be perceived.

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March 22, 1868, U.S.A. – Dec. 19 1953 Country of Origin: United States Year of Disvoery: 1910
 * Robert Millikan**

Millikan’s grandparents were of the pioneer settlers of the Midwest. Greek and mathematics were his favorite classes. After teaching a course in elementary physics he began to develop a passion for it. As a professor, Millikan was known for writing many text books that simplified physics for students. His biggest discovery was in 1910 when he found the exact charge of the electron and demonstrating the atomic structure. He did this by suspending oil drops between two electrodes. Since the density of the oil was known, Millikan was able to calculate with accuracy the charge of the electron. [] []

August 30 1871-October 19 1937 Country of origin: England Year of Discovery: 1911
 * Earnest Rutherford**



Earnest Rutherford is responsible for many contributions to chemistry. As a devoted man to the science he started at a young age. He worked under J.J. Thompson and discovered that X-rays had different properties than radiation from uranium. While the chair of McGill University he co-discovered that when atoms undergo radiation they change from one element to an entirely different one. Rutherford is also a winner of the Nobel Prize in 1908. In 1911 Rutherford made his greatest contribution to chemistry. While trying to prove J.J. Thompsons “Plum Pudding” model, Rutherford discovered something entirely different. He discovered that atoms consisted of a nucleus that was densely packed with protons while negatively charged particles revolved around it. Rutherford discovered this by firing radiation at a piece of gold foil. Rutherford predicted that the particles would flow strait through the foil but found that some of the particles were being bounced back or going in different routes. This proved that there must be a dense center in order for this to happen.

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September 2, 1877- September 22, 1956 Country of Origin: England Year of Discovery: 1913
 * Frederick Soddy **

Soddy attended Oxford University where he graduated with honors in chemistry. After two years of research in Oxford he moved to Canada to work at McGill University where he worked with Earnest Rutherford on problems concerning radioactivity. After leaving Canada he went to the University of College London where he worked with William Ramsay. In 1914 he was appointed a position at the University of Aberdeen, but the war hampered him. Soddy is most known for his discovery of the isotope. This showed the world that elements could exist in nature with multiple atomic masses. []