Greek+Era

=__**Atomic Theory: Greek Era**__=


 * Democritus || [[image:reich-chemistry:Democritus.jpg width="227" height="315" align="left" caption="Democritus: 460 BC to 370 BC"]] ||

460 BC to 370 BC Democritus did not originate the atomic theory, he learned it from its founder, Leucippus. Democritus stated that there are atoms in the void, and that everything is made up of atoms, atoms too small to be seen or diminished. Democritus could explain all changes in the world as changes in motion of the atoms, or changes in the way that they were packed together.


 * Leucippus || [[image:reich-chemistry:leucippus-.jpg width="223" height="284" caption="Leucippus"]] ||

440BC He came up with the theory that the universe consists of two different elements, which he called the solid and void. Both the void and the solid atoms within it are thought to be infinite, and between them to constitute the elements of everything. More is known about his predecessor Democritus.


 * Aristotle || [[image:reich-chemistry:aristotle.jpg width="191" height="257" caption="Aristotle"]] ||

384-322 BC. He believed that nature consisted of four elements earth, air, fire, and water. Aristotle is said to have written 150 philosophical papers that range from biology and physics to morals to aesthetics to politics.