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LinkThe disroving of Aristotle's four-elements theory.
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Link Antoine Lavoisier who disproved the Phlogiston Theory. He renamed the "dephlogisticated air" oxygen when he realized that the oxygen was the part of air that combines with substances as they burn
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LinkJohn Dalton publishes his Atomic Theory
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LinkHeinrich Geissler creates the first vacuum tube.
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LinkEugene Goldstein discovered positive particles
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LinkWilhelm Roentgen accidentally discovered x-rays
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LinkMarie Curie discovered uranium and thorium within pitchblend
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British physicist Joseph Thomson discovered the electron. [Link](<a href='http://dl.clackamas.edu/ch104-04/dalton's.htm)' >Link</a>
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LinkErnest Rutherford publishes his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons.
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LinkIn 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus.