Quantum mechanics/Timelines: Difference between revisions
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imported>Robert W King |
imported>J. Noel Chiappa (→Founding experiments: Add main EPR events) |
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|event= <big>1927:</big> [[Clinton Davisson]] and [[Lester Germer]] demonstrate the wave nature of the [[electron]] <ref>[http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/davger2.html The Davisson-Germer experiment, which demonstrates the wave nature of the electron]</ref> in the [[Electron diffraction]] experiment. | |event= <big>1927:</big> [[Clinton Davisson]] and [[Lester Germer]] demonstrate the wave nature of the [[electron]] <ref>[http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/davger2.html The Davisson-Germer experiment, which demonstrates the wave nature of the electron]</ref> in the [[Electron diffraction]] experiment. | ||
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|event= <big>1935:</big> The [[EPR]] paper by Einstein and two collaborators points out an important, and previously non-understood implication of quantum mechanics|width= 90% | |||
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|event= <big>1961:</big> [[Claus Jönsson]]`s [[double-slit experiment]] with electrons. | |event= <big>1961:</big> [[Claus Jönsson]]`s [[double-slit experiment]] with electrons. | ||
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|event= <big>1964:</big> [[J. S. Bell]]'s theorem proves that so-called 'local' theories cannot predict quantum outcomes|width= 90% | |||
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|event= <big>1980:</big> 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]]. | |event= <big>1980:</big> 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]]. | ||
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|event= <big>1982:</big> [[Alain Aspect]]'s group at the [[University of Orsay]] confirm Bell's prediction, and prove Einstein was wrong|width= 90% | |||
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Revision as of 17:09, 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.
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
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