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jan 1, 430 BC - Democritus In 430 B.C., Democritus made the theory of atoms. Atoms (which means “unbreakable” in Greek), he says, are unseeable particles in all matter which includes an empty void.
Added to timeline:
19 Oct 2018
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Atomic Model Timeline
Date:
jan 1, 430 BC
Now
~ 2455 years ago
Images: