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Democritus
In 460 B.C, Democritus came up with the idea of atoms. -
John Dalton
In the 1800s, John Dalton spread his ideas to help the further exseptance of the ideas of atoms. -
Sir William Crookes
Sir William Crookes helped to discover electrons and conducted an experiment by sending electricty into a concealed tube with electrodes at both ends. -
JJ Thompson
in 1897, JJ Tompson discovered that atoms were not simple, soild , spheres and helped discover electrons. -
Ernest Rutherford
In 1911, Ernest Rutherford discovered the nucleus and said that all positive partivles were inside the atom, and all the negative particles were outside the atom. -
Neils Bohr
In 1913, Neils Bohr propsed that electrons orbit around the neculeas. -
Louis de Broglie
Lous de Broglie helped to devolp more accurate information about electrons and electron waves -
James Chadwick
James Chadwick discoved the neutron in 1932 by conducting an experiment. He found out that protons react as if there is a netural force there, leading him to belive there was a neutral particle.
