-
350
Aristotle
Created the scientific method that states theories are proved with experimental evidence. -
400
Democritus Model
Explained the first atom model. -
John Dalton
Proposed the atomic theory. -
Period: to
J. Plucker, James Clark Maxwell, Sir Williams Crookes, Henri Becquerel
During this time the Gas chamber tube was made, Figured out that electric and magnets filled void, learend about the cathrode rays, which all together creatingthe cathrode tube that help lead to the next atomic model. -
J.J. Thomson
Proposed that the atom has electrons. -
Hanataro Nagaoka
Proposed that the electrons were set like saturn rings. -
Rutheford
Proposed that the atom's electon is wizzing aroundthe nucleus. He figued this out by using the cathrode tube studying it indirectly. -
Neils Bohr
discovered that electrons has orbitals that explained that they are in energy levels. -
Period: to
Broglie, Schrodinger, and other scientists
studied and figured out the electron cloud. Also learned about chain reactions and leading to wavelengths. leadingto more knowledge and theories.