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101
Greek
The Greeks idea of the atom was that is was a small particle, indivisible. -
John Dalton
Dalton thought that atoms where solid spheres. Atoms cannot be divided into smaller pieces. -
William Crooke
Crooke developed the CRT, Cathode Ray Tube. The glass tube had two pieces of metal called electrodes that had a positive charge and a negative charge. -
J.J. Thomson
Thomson discovered electrons and protons. The atom is very small mass of positive matter with negatively charged electrons embedded in the positive substance. -
Niels Bohr
He thought Negatively charged electrons occupy the space around the nucleus. Bohr came up with the orbit theroy. 1st orbit - 2; 2nd orbit 8; 3rd orbit 8. -
Werner Heisenberg
Werner Heisneberg discovered the Heisenberg Uncertainty Principle which states that the momentum and postion of a particle cannot be simultaneously measured with high precision. -
Rutherford
Rutherford discovered the nucleus and that it was positive. You can’t just make something you have to run test on it before it becomes something real.
