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Isaac Newton
Proposed a mechanical universe with small solid masses in motion. -
John Dalton
He discover the relative weights of particles. He believed the atom was just a sphere. -
James Clerk Maxwell
Proposed electric and magnetic fields filled the void. -
J.J. Thomson
He discovered electrons or negatively charged particles. -
Ernest Rutherford
He found that atoms are mostly made of space and that each atom has a small condensed positively charged center. He called the center the nucleus. He also found that negatively charged partials where around the nucleus. -
Francis Aston
Discovered the existence of isotopes through the use of a mass spectrograph. -
Niels Bohr
He found that electrons orbit around the nucleus, within energy levels. -
Enrico Fermi
Released the first energy from the nucleus.
