-
Democritus created the atomic theory, that meant everything in the universe is made up of the following principle: everything is composed of atoms.
-
Dalton came up with the atomic theory, 4 key points.
-
Dmitri Mendeleev is known for working on the periodic law and creating the first periodic table.
-
Goldstein was the first to observe the proton during his work with discharge tubes, observing rays going from cathode to anode, where he also noticed the presence of waves going in the opposite direction.
-
Thomson discovered the electron in 1997, and then proposed the idea of the plum pudding model of the atom in 1904, in his model the atom was composed of electrons.
-
Millikan is known for the Millikan Oil Drop, that determined the size of the charge on an electron.
-
Rutherford is known for the creation of the Rutherford model of the atom, which showed that atoms have a small charged nucleus surrounded by open space, and are circled by tiny electrons. He was the first to discover that atoms have a nucleus
-
Planck is known as the originator of the quantum theory of energy
-
Bohr proposed a theory about the hydrogen atom based on the quantum theory that energy is only defined in well defined quantities.
-
Werner Heisenberg is most commonly known for his uncertainty principle, and theory of quantum mechanics
-
Schrodinger used Mathematical equations to show to likelyhood of an electron being found in a certain position.
-
Chadwick discovered the neutron in atoms that contributed to the atomic weight of the atom.
