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Democritus was an influential Ancient Greek pre-Socratic philosopher primarily remembered today for his atomic theory of the universe.
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The word alchemist comes from alchemy, which has origins in the Greek word khemeia, meaning "art of transmuting metals."
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French nobleman and chemist central to the 18th-century chemical revolution and had a large influence on both the history of chemistry and the history of biology.
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John Dalton was an English chemist, physicist, and meteorologist. He is best known for his work in the development of the atomic theory
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He was a pioneer of vacuum tubes, inventing the Crookes tube which was made in 1875.
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John Thomson was an English physicist. He was elected as a fellow of the Royal Society of London and appointed to the Cavendish Professorship of Experimental Physics
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Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity
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Robert A. Millikan was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for his measurement of the elementary electronic charge and for his work on the photoelectric effect.
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New Zealand physicist who came to be known as the father of nuclear physics.
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He developed the general theory of relativity, one of the two pillars of modern physics. Einstein's work is also known for its influence on the philosophy of science.
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Niels Henrik David Bohr was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory.
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The experiment was to show that cathode rays were electrically charged. The cathode ray tube J.J. Thomson demonstrated that cathode rays could be deflected by a magnetic field.
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Rutherford's Gold Foil Experiment proved the existence of a small massive center to atoms, which would later be known as the nucleus of an atom.
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The oil drop experiment was performed by Robert A. Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron).
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It is used to describe where electrons are when they go around the nucleus of an atom. The electron cloud model is different from the older Bohr atomic model by Niels Bohr.