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Isaac Newton
said a mechanical universe with small solid masses in motion -
John Dalton
"atomic theory" with spherical solid atoms based upon measurable properties of mass -
Sir William Crooke
constructed a cathode ray tube, which later became the basis for television -
Wilhelm Rontgen
discovered that certain chemicals glowed when exposed to cathode rays -
JJ Thomson
discovered the electron -
Albert Einstein
creates special and general theories of relativity, and hypothesizes about the particle nature of light -
Ernest Rutherford
developed the theory for the structure of the atom -
Neils Bohr
developed the Bohr atomic model, with electrons travelling in orbits around the nucleus, and chemical properties being determined by how many electrons are in the outer orbits -
James Chadwick
discovers the neutron component of the atomic nucleus -
Otto Hahn & Lise Meitner
discovers nuclear fission