CK-12 Foundation
Ck 12: Physical Science: Democritus' Idea of the Atom
[Free Registration/Login may be required to access all resource tools.] Introduction of the idea of the atom and the diversity of matter.
CK-12 Foundation
Ck 12: Chemistry: Democritus' Idea of the Atom
[Free Registration/Login may be required to access all resource tools.] Explains the ideas of Democritus dealing with the divisibility of the atom.