aug 3, 442 BC - Democritus created the Atomic Theory: Everything is composed of “atoms”, which are physically, but not geometrically, indivisible; Between atoms, there lies empty space; Atoms are indestructible; Atoms have always been, and always will be, in motion; There are an infinite number of atoms, and kinds of atoms, which differ in shape, and size.
Added to timeline:
Date:
aug 3, 442 BC
Now
~ 2469 years ago