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Democritus was a central figure in the development of the atomic theory of the universe. He theorised that all material bodies are made up of indivisibly small “atoms.”
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Aristotle laid the philosophical groundwork for all subsequent discussions of elements, pure substances, and chemical combination.
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Isaac Newton contributed to atomic theory through his systematic development of calculus-based object modeling concepts
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Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks
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made one of the most significant discoveries that led to the idea that atoms had an electrical component.