Everything in the universe is made of Atoms and the space that they fill.
Democritus 440 B.C.
This, Democritus, is false. Empty spaces do not exist. everything in the world consists of water, earth, fire, and wind
Aristotle 322 B.C.
2125 Years Later...
Democritus was correct! I have came to the conclusion that everything is made of atoms, and that atoms are indivisible and indestructible. All atoms of a given element are identical in mass and properties. compounds are formed by a combination of two or more different kinds of atoms. Finally, a chemical reaction is a rearrangement of atoms.
What is this that I have discovered while I was using my ray tube? I will call it the electron!
J.J. Thomson 1897
Today I have conducted an experiment which has determined the size of the charge of an electron. This also leads me to believe that charge is quantized.