-
Thought everything was was made of somthing; Such as the four elements.
-
Thought everything was held together by atoms; Had the idea that there were atoms.
-
Thought everything was made of the four elements; same as Thales of Miletus.
-
Thought everything was held together by atoms; Like Democritus.
-
He created the Atomic theory.
-
Discovered radioactivity.
-
Discovered the electron,
and how it was lighter than a hydrogen atom. -
Discovered atoms containing a neceleus and made protons surrounded by electrons.
-
Discovered charge and mass of electrons.
-
Believed that all electrons in atoms are in orbit, that electrons are on fixed points.
-
Discovered isotopes.
-
Discovered how to find an electron in a certain models.
-
Dicovered the exsitance of the neutrons.