-
Democritus develops the idea of atoms
-
John Dalton came up with the first experiment that matter was made up of tiny particles
-
-
Conducted his gold foil experiment where he fired helium nuclei and discovered about 1 in every 10,000 nuclei hit the gold foil
-
Bohr refines Rutherford's experiment by adding that electrons were in orbit around the nuclei
-
discovered that the nucleus had protons and neutrons
A list shows items. A timeline shows sequence.
Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.