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370
Leuccipus Democritis 460-370 B.C
Theorize that all mater was made of Atoms. -
Robert Boyle 1627-1692
Created Boyles law which states the relationship between pressure and volume. -
John Dalton 1766-1844
Supported the atomic theory of Democritus, but he was able to prove it scientifically. -
William Crookes 1832-1919
Discovered the Electron using cathode ray tube experiment. -
J.J. Thompson 1856-1940
Credited with discovering the Isotope and the electron. -
Max Planck 1858-1947
Stated that energy is radiated in small units called Quanta. This is later call the Quantum theory. -
William Wien 1864-1928
Found the charge to mass ration of atoms. -
Ernest Rutherfoord 1871-1937
Alpha particles are doubly ionized atoms of helium. Also discovers the nucleus. -
Albert Einstein 1879-1955
Made up E=MC² which shows theory of relativity. -
Niels Bohr 1885-1962
Theorize that electron orbit the Nucleus. -
Erwin Schrodinger 1887-1961
Designed the SchrodingerCat experiment. -
James chadwick 1891-1974
Found the Nuetron when he combined beryllium atoms with alpha rays. -
Louis de Broglie 1892- 1987
Created the Brogile Equation.which states that any moving object has an associated wave. -
Werner Heisenberg 1901-1976
Uncertainty principle that states that you cannot know the velocity and position of a particle. -
Sources
Wikipedia, google images, google . http://www.angelfire.com/mb2/atoms/ -
Aristotle 384-322 B.C.
Denied that atoms existed. He theorize that all Substances were made of Earth, water, Air, and fire. -
Dark ages 322 B.C.- 1627 A.D.
The period of time where no inventions were created and no new discoveries about the atoms came up. the reason for this is that no one challenged the beliefs of aristotle because he was so respected, and his ideas were so well known and beleived.
