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November 1, 2025
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jan 1, 400 BC - Democritus Atomism , 400 B.C.

Description:

Democritus, with his mentor Leucippus, first theorized the idea that atoms make up all matter. He theorized that atoms are indivisible and indestructible.

Added to timeline:

Date:

jan 1, 400 BC
Now
~ 2427 years ago