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Democritus died.
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Democritus was born.
(The year Democritus' atomic theory was proposed is unknown.) -
Lavoisier was born.
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Lavoisier’s atomic theory was proposed in 1789.
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Lavoisier died.
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Dalton's atomic theory was proposed.
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Crookes was born.
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Dalton died.
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Thomson was born in 1856.
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Planck was born.
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Mendeleevs first periodic table was published.
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Rutherford was born in 1871.
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Soddy was born.
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Einstein was born.
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Crookes’ atomic theory was proposed in 1879.
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Planck’s contribution to the atomic theory was in 1880, he presented his thesis of Equilibrium states of isotropic bodies at different temperatures.
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Bohr was born.
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Moseley was born.
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Schrödinger was born.
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Chadwick was born.
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Thomson's atomic theory was proposed at around 1897-1903.
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Mendeleev’s contribution to the atomic theory was in 1906.
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Einstein’s atomic theory was proposed in 1907.
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Rutherford’s atomic theory was proposed in 1911.
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Moseley’s contribution to the atomic theory was proposed in 1912.
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Bohr completed his theory of atomic structure in 1913.
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Soddy's atomic theory showed that atoms move lower in atomic number by two places on alpha emission, higher by one place on beta emission in 1913.
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Bohr’s atomic theory was proposed in 1913.
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Soddy’s contribution to the atomic theory was proposed in 1913.
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Moseley died.
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Crookes died.
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Schrödinger’s atomic theory was proposed in 1926.
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http://en.wikipedia.org/wiki/File:Nernst,_Einstein,_Planck,_Millikan,_Laue_in_1931.jpg At a dinner given by von Laue in Berlin on 11th November 1931.
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Chadwick’s atomic theory was proposed in 1932.
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Rutherford died in 1937.
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Thomson died in 1940.
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Planck died.
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Einstein died.
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Soddy died.
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Bohr died.
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Chadwick died.
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Aristotle was born.
(The year Aristitle's atomic theory was proposed is unknown.)
