Quantum mechanics/Timelines: Difference between revisions
Jump to navigation
Jump to search
imported>J. Noel Chiappa (→Founding experiments: Add main EPR events) |
imported>J. Noel Chiappa (→Founding experiments: Add de Broglie, Heisenberg) |
||
| Line 45: | Line 45: | ||
|event= <big>1920:</big> [[Otto Stern]] and [[Walther Gerlach]] conduct the [[Stern-Gerlach experiment]], which demonstrates the quantized nature of particle [[Spin (physics)|spin]]. | |event= <big>1920:</big> [[Otto Stern]] and [[Walther Gerlach]] conduct the [[Stern-Gerlach experiment]], which demonstrates the quantized nature of particle [[Spin (physics)|spin]]. | ||
|width= 90% | |width= 90% | ||
|color= #FFF | |||
}} | |||
{{TLevent | |||
|event= <big>1925 (?):</big> [[Louis de Broglie]] extends the particle-wave duality to cover all particles|width= 90% | |||
|color= #FFF | |||
}} | |||
{{TLevent | |||
|event= <big>1927:</big> [[Werner Heisenberg]] propounds the [[Uncertainty Principle]]|width= 90% | |||
|color= #FFF | |color= #FFF | ||
}} | }} | ||
Revision as of 16:15, 1 April 2008
Founding experiments
c 1805: Thomas Young's double-slit experiment demonstrating the wave nature of light.
1896: Henri Becquerel discovers radioactivity.
1897: Joseph John Thomson's cathode ray tube experiments (discovers the electron and its negative charge).
1850 - 1900: The study of black body radiation, which could not be explained without quantum concepts.
1905: The photoelectric effect: Explained by Einstein (who later received a Nobel prize for it) using the concept of photons, particles of light with quantized energy.
1909: Robert Millikan's oil-drop experiment, which showed that electric charge occurs as quanta (whole units).
1911: Ernest Rutherford's gold foil experiment disproved the plum pudding model of the atom which suggested that the mass and positive charge of the atom are almost uniformly distributed.
1920: Otto Stern and Walther Gerlach conduct the Stern-Gerlach experiment, which demonstrates the quantized nature of particle spin.
1925 (?): Louis de Broglie extends the particle-wave duality to cover all particles
1927: Werner Heisenberg propounds the Uncertainty Principle
1927: Clinton Davisson and Lester Germer demonstrate the wave nature of the electron [1] in the Electron diffraction experiment.
1935: The EPR paper by Einstein and two collaborators points out an important, and previously non-understood implication of quantum mechanics
1955: Clyde L. Cowan and Frederick Reines confirm the existence of the neutrino in the neutrino experiment.
1961: Claus Jönsson`s double-slit experiment with electrons.
1964: J. S. Bell's theorem proves that so-called 'local' theories cannot predict quantum outcomes
1980: The Quantum Hall effect, discovered by Klaus von Klitzing. The quantized version of the Hall effect has allowed for the definition of a new practical standard for electrical resistance and for an extremely precise independent determination of the fine structure constant.
1982: Alain Aspect's group at the University of Orsay confirm Bell's prediction, and prove Einstein was wrong
|