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An alchemist is basically a person who practices chemistry and some would say they practice medieval chemistry.(100ad-200ad)
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Greek philosopher who developed an atomistic theory of matter for the universe
(460 A.D- 370 A.D) -
devloped the atomic theroy discoverd it and he made other observations
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dicoverd the electron no date givin in my research
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he dicoverd general relativity, and special relativity
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"theory of relativity" was based on the expression "relative theory" used by Max Planck
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dicoverd the nucleus
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he discovered the proton
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The electron cloud model was actually invented by three different scientists. They were Ernest Rutherford, Niels Bohr, and Werner Heisenberg.
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discovered the neutron