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The Greeks idea of the atom was that is was a small particle, indivisible.
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Dalton thought that atoms where solid spheres. Atoms cannot be divided into smaller pieces.
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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.
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Thomson discovered electrons and protons. The atom is very small mass of positive matter with negatively charged electrons embedded in the positive substance.
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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.
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Werner Heisneberg discovered the Heisenberg Uncertainty Principle which states that the momentum and postion of a particle cannot be simultaneously measured with high precision.
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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.
