Bomb Timeline

Atoms

Dec 24, 1938

Otto Hahn discovered that the world was made of atoms P.14

Water Droplet

Jan 3, 1939

Bohr suggested that the nucleus of an atom might act like a water droplet P.15

Fission

Jan 24, 1939

Called this splitting of atoms fission P.16

U-235 Atoms

Dec 24, 1944

When scientists figured out that only some atoms fissioned and those atoms were U-235 P.123

First Atomic Bomb Set Off

Jul 16, 1945

Trinity Site near Alamogordo, where the world's first atomic bomb exploded. P.183