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Beginning of Atomic Theory
In 440 B.C., Democritus discovers atoms when he ponders the question; Could you keep cutting the pieces in half forever? -
John Dalton publishes his theory
Dalton comes up with three rules. All subsances are made of atoms, atoms of the same element are alike, atoms join with other atoms to make a new substance. -
Thompson Discovers Electrons
British scientist named J.J. Thomson discovered small particles inside of the atom known as electrons. -
Rutherford's Atomic "Shooting Gallery"
Ernest Rutherford, a student of Thomson, creates an expierement. He aimed a beam of postive particles at a gold sheet and fired. He discovered that there is empty space in atoms. -
Rutherford revises the Atomic Thoery
Rutherford descovers the nucleus of an atom. He found out that the nucleus is also very small -
Bohr's Electron Level
Niels Bohr discovered that electrons so not follow any specific pattern. -
Erwin Schrodinger and Werner Heisenberg
These two German scientists discover electron clouds. -
Manhattan Project Starts
Scientists like Einstein and othe Jewish scientists begin the MAnhattan project -
First A-Bomb is dropped
Dropped on Hiroshima, this was the first Atomic Powered bomb dropped during a military operation.
