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Born in 460 BC, died in 370 BC, Suggested atoms and a void coexisting.
https://the-history-of-the-atom.wikispaces.com/Democritus -
Uncertainty principle (unable to be certain) - Heisenberg's theory.
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Born in 1766, explained atom behavior and green-red colorblindness, he also believed that elements are composed of only atoms, which was proven incorrect.
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Born in 1856, discovered the electron (he said that atoms contained negative charged particles) and enhanced the atomic model.
https://www.nobelprize.org/nobel_prizes/physics/laureates/1906/thomson-bio.html -
Born in 1868, he discovered the weight of electrons. https://www.nobelprize.org/nobel_prizes/physics/laureates/1923/millikan-bio.html
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Born in 1871, explained the concept of radioactivity, as well as discovering the nucleus. https://www.nobelprize.org/nobel_prizes/chemistry/laureates/1908/rutherford-bio.html
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Born in 1885, discovered that the electrons move around the nucleus of an atom. https://www.nobelprize.org/nobel_prizes/physics/laureates/1922/bohr-bio.html
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Born in 1901, discovered that knowing for certain where an electron is is impossible, however it is able to be estimated. https://www.nobelprize.org/nobel_prizes/physics/laureates/1932/heisenberg-bio.html