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Democritus first introduced the idea of atoms.
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Introduced the atomic theory to chemistry.
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He created the first periodic table.
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Early investigator of discharge tubes, the discoverer of anode rays, and is sometimes credited with the discovery of the proton.
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He discovered the first electron.
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Discovery of energy quanta.
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Measurement of the elementary electric charge and for his work on the photoelectric effect.
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Discovered that atoms have a small charged nucleus surrounded by emptiness.
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Contributed to understanding atomic structure and quantum theory.
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Used mathematical equations to describe the likelihood of finding an electron in a certain position.
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Discovered the first neutron.
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One of the key pioneers of quantum mechanics.