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500 BCE
Democritus
Democritus stated almost 1000 years before any proof, that atoms make all matter and differ in size, shape, position, mass, and arrangement. The author of over 70 books, he lived and worked in ancient Greece -
Period: 500 BCE to
The Alchemists
The alchemists were a group of people around the world who thought they could make gold and silver from other metals by chemistry. They began the beginnings of modern science. Particularly, chemistry. -
384 BCE
Aristotle
Aristotle lived and worked in Greece. There, he taught others. Eventually , He created the foundation for many modern sciences, specificly Chemistry -
Charles-Augustin de Coulomb
Coulomb made a law that explains the force between two electric charges. Coulomb lived and worked in France and graduated Military school! -
john dalton
John Dalton of England did not prove anything, but instead spread the idea Democritus stated years before. Unusually, Dalton began science as trying to explain color blindness! -
Crookes
Crookes, while in London U.K, discovered thallium as well as first samples of helium. Surprisingly, Crookes' father was a tailor. -
J. J. Thomson
Thomson theorized the structure of the atom in the U.K. Interestingly, his father wanted him to be an engineer. -
The Curies
The husband and wife Curies discovered polonium and radium in France. Unusually, Marie Curie got 2 Nobel prizes, one for both curies and one for Marie herself. -
Milikan
Millikan discovered the charge of a single electron when we was working in the U.S.A.For fun, he loved to play tennis. -
Rutherford's Model
Discovered by none other than Rutherford in 1911. -
Bohr
Bohr created a model called (ready for this!?) Bohr's Model (amazing!).He lived and worked in Denmark, where he had 6 sons. -
Bohr's Model
The iconic image of an atom was proposed by Bohr (obviously) in 1913. -
Electron Cloud Model
This was proposed by Schrodinger in 1926. -
James Chadwick
James Chadwick was the assistant director of Research in Cavendish, U.K. 9 years later, He discovered the electron, a part of an atom! -
Otto Hahn
Hahn, along with Meitner, discovered the fission of heavy nuclei. Also, Hahn discovered radiothorium. -
Seaborg
Seaborg of the U.S discover more than 9 elements! he gained a Nobel prize before he was 40. -
Roentgen
Roentgen lived and worked in Germany, when he discovered x-rays. Hilariously, The x-ray he made was of his wife's hand!
