Discovery of the Structure of the Atom by Isabelle Morehead

Ernest Rutherford - 1911

imorehead — 2024-09-25 19:42:48 UTC

In 1911, Ernest Rutherford found that the atom is mostly empty space, with nearly all of its mass concentrated in a tiny, positively charged central nucleus.

Niels Bohr - 1913

imorehead — 2024-09-25 22:37:51 UTC

In 1913, Niels Bohr proposed a model of the atom in which the electron was able to occupy only certain orbits around the nucleus.

John Dalton - 1803

imorehead — 2024-09-25 22:47:46 UTC

In 1803, John Dalton developed a theory that stated that each element consisted of its own unique brand of invisible atom(s). He described these atoms to be "a ball like structure."

JJ Thomson - 1897

imorehead — 2024-09-25 22:57:33 UTC

In 1897, after a series of experiments, JJ Thomson found that all atoms contain negatively charged subatomic particles or electrons.

James Chadwick - 1932

imorehead — 2024-09-25 23:06:58 UTC

In 1932, James Chadwick proved the existence of neutrons - elementary particles without any electrical charge.