-
Democritus had an idea of atoms but in a void.
-
Dalton believed that all matter is made out of atoms and that theya re invisible and indestructible.
-
Michael Faraday verified that electrical forced held together an atom.
-
Julius Plucker built one of the first gas discharge tubes also known as a cathode ray tube.
-
William discovered X-rays while using the cathode ray tube.
-
He discovered the Plum pudding model of the atom and he concluded that there are electrons around the atom surrounded by a positive charged area to blance out.
-
He discovered a planetary model of the atom based on saturn's rings but this model was incorrect.
-
Rutherford theorized that atoms have a small positive charge in a small nucleus. He tested this theory with the gold foil experiment and he came up with a new model.
-
He believed that outer orbitals could hold more electrons then inner orbitals. He also suggested that the outer orbitals determine the atom's chemical property.
-
They built an accelerator and bombarded lithium with protons to make alpha particles
-
Saw electrons as a continuous clouds and introduced wave mechanics as a mathmatical model of an atom.
-
He did the first controlled chain reaction releasing energy from the atom's nucleus.
