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400 BCE
Democritus
Democritus made the original findings of an atom and that atoms are the smallest and most indestructible object in the world -
John Dalton
He came up with the first universal atomic thoery -
J.J. Thomson
when he was trying to figure out what cavendish rays were he discovered electrons -
Dmitri Mendeleev
he arranged 63 elements by atomic mass -
Eugen golstein
he accidentally discovered positive rays -
Max planck
He came up with the idea of quantum theory -
Niels Bohr
he came up with the idea of radiation and atomic structure \ -
Robert Millikan
Found out how to measure electric energy in elctrons -
Werner heisenberg
he made quantum mechanics while max planck made quantum theory -
Erwin schrödinger
he created wave mechanics also known as schrödiner's equation Off atoms and all that he made my favorite thing ever and that a paradox look up schrödinger's cat if you want to know more -
James chadwick
He discovered the neutron and actually made the us want to speed up the Manhattan Project
