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His atomic theory said that all matter is made up by small idestructable units he called atoms.
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He believed that all matter was made up of the four elements, fire, air, water, and earth.
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He found two elements that make up water.
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He said that elememts consisted of atoms that were identical and had the same mass.
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While investigating flourecents in Uranium cells, he accidentally discovered radioactivity.
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He identified the negativly charged electron in the cathode ray tube. This particle was later identified as the proton.
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They studied uranium and thorium and called their decay process "radioactivity". Pierre also discovered the radioactive elements, radium and polonium.
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He formulated the equation describing the black body spectrum. Plancks spectrums suggested that energy was directly proportional to frequency
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He published the famous equation e=mc^2
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He determined the unit charge of the electron with his oil drop experiement at the University of Chicago. The calculation of the mass of the eletron and the positivily charged atoms is
e= 1.60 x 10^-19. -
He proposed the nuclear atom as the result of the gold-foil experiment. In 1920 he proposed the existence of the third aromic patricle, the neutron.
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He assumed that the elcron exists at percise distances from the nucleous.
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He proposed that all particles have wave like properties and may summerize that the equation: lambda=h/mn.
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He came up with the equation for quantum physics. He tried to see electron in packets that moved in waves.
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He discovered the neutron. The discovery of the neutron led to the discovery of fission and the atomic bond.
