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Atom (paramanu)
The idea of a fundamental particle (maybe unit) seems to be originated in Greek and Indian philosophy independently. In Greek philosophy, Democritus suggested the idea of atom around 400-300 BCE, while in Indian philosophy, It was Kanada who proposed the idea of paramanu (Atom) around 600-200 BCE.\ \ However, both ideas of atom are very different. Democritus\'s atom has no qualitative differences, while Kanada\'s atom differed both quantitatively and qualitatively.
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