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He was a Greek philosopher who first introduced the idea of atoms. He called it the atomus, which is Greek for "not cuttable".
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His theory proposed that all the matter was made out of indivisible atoms. All of the atoms of one element were identical, and different elements had different atoms of size and weight. He also developed the system of symbols for the elements.
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He was a physicist who first discovered the electron in 1897. He proposed the plum pudding model before the discovery of the nucleus. His model is made of the pudding (protons), and the raisins being electrons.
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He was known as the father of nuclear physics, and held his famous gold foil experiment, by shooting alpha particles, which led to the discovery of the nucleus. He proposed the idea that all the positive charge is inside the nucleus.
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He was a theoretical physicist and is best known for his theory of relativity. In 1905, he published an analysis of how to predict the size of atoms and molecules. This test was important to knowing that atoms were real.
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He held the oil drop experiment which helped measure an electron's charge. He also found the specific size of the electron charge with the help of J.J. Thomson's experiment.
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Bohr invented the Bohr atomic model with electrons orbiting the nucleus with special orbits. He supported the quantum theory which is based on his theory.
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He is best known for the equation he made about quantum mechanics. He showed that waves could be used to describe electrons.
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He included matrix mechanics into the atomic theory, and including the asserting of the uncertainty principle.
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He was a French mathematician who is known for his discovery of particle-wave properties of an electron.
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He was an English physicist and is famous for his discovery of the neutron. His discovery was crucial for the discovery of the fission of uranium.
