Atom Scientists

By: Emma Heinrich

John Dalton

In 1808, John Dalton published his theory that each element is made out of microscopic atoms that were tiny balls. Each Element has different masses of atoms. Dalton examined vapor pressure of six different liquids.

JJ Thomson

In 1897, JJ Thomson discovered the electron while experimenting with a Crookes. In addition, he also studied positively charged particles in neon gas.

Hantoro Nagaoka

In 1904, Hantoro Nagaoka published quasi-planetary model of the atom.