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SourceZosimus believed everything was made up of Earth Air Fire and Water.
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Source460 BCE
Created the concpet of Atoms -
Source He did a lot of things. Exact dates on these things are hard to pinpoint.
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SourceProposed the Atomic theory; All matter is made of atoms; Atoms of a single element have unique properties and weight; There are three tyes of atoms.
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SourceLaw of octaves
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SourcePresented his ownperiodic table of elements based off of Atmoic weight.
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SourceDiscovered electrons
19 years later proposed a model for an atom. -
SourceIn 1912 Niels Bohr joined him at Manchester and he adapted Rutherford's nuclear structure to Max Planck's quantum theory and so obtained a theory of atomic structure which, with later improvements, mainly as a result of Heisenberg's concepts, remains valid to this day.
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SourceSuccesfully created a model of an atom that is still in use today.