Atomic Theories

Events

Dalton

1803

"All matter is made out of atoms which are indestructible, indivisible, and identical in mass and property."

Dalton´s Discovery

1810

"Atoms within a given element are all exactly the same size and weight, while the atoms of different elements look—and are—different from one other."

Dalton´s Death

1844

Schrödinger

1887

Thomson

1895

He showed that it was easy to extract negatively charged particles from atoms."

Bohr

1903

"Energy is transferred in defined quantities. Electrons should ne moved aroun the nucleus but only in prescribed orbits."

Rutherford

1911

"Negative charges are distributed throughout the atom, like currants in a pudding."

Thomson´s Discovery

1912

"Neon was composed of two different kinds of atoms, and proved the existence of isotopes in a stable element."

Rutherford´s Discovery

1919

"He discovered how to artificially induce a nuclear reaction in a stable element."

Schrödinger´s Discovery

1925

"He articulated the movements of electrons in terms of wave mechanics as opposed to particle leaps."

Rutherford´s Death

1937

Thomson´s Death

1940

Bohr´s Discovery

1950

nvisioned an "open world" mode of existence between countries that abandoned isolationism for true cultural exchange."

Schrödinger´s Death

1961

Bohr´s Death

1962