Quantum mechanics/Timelines: Difference between revisions
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imported>J. Noel Chiappa (→Founding experiments: Ooops, added some theory - will ask on talk how to handle) |
imported>Paul Wormer (→Founding work: See talk) |
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|event= <big>1850 - 1900:</big> The study of [[black body radiation]], which | |event= <big>1850 - 1900:</big> The study of [[black body radiation]], which gave the unexplainable [[UV catastrophe]]. | ||
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|event= <big>1905:</big> The [[photoelectric effect]]: Explained by [[Albert Einstein|Einstein]] | |event= <big>1900:</big> The study of [[black body radiation]] led [[Max Planck]] to quantization of energy; full explanation of spectrum, including the ultraviolet (UV). | ||
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|event= <big>1905:</big> The [[photoelectric effect]]: Explained by [[Albert Einstein|Einstein]] using the concept of photons, particles of light with quantized energy. | |||
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|event= <big>1920:</big> [[Otto Stern]] and [[Walther Gerlach]] conduct the [[Stern-Gerlach experiment]], which demonstrates | |event= <big>1913:</big> [[Niels Bohr]]'s explanation of stationary states of [[hydrogen-like atom|hydrogen atom]] | ||
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|event= <big>1920:</big> [[Otto Stern]] and [[Walther Gerlach]] conduct the [[Stern-Gerlach experiment]], which demonstrates a doublet nature of spectra, later interpreted as [[Spin (physics)|spin]]. | |||
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|event= <big>1924:</big> [[Louis de Broglie]] extends the particle-wave duality to cover all particles|width= 90% | |||
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|event= <big>1924:</big> [[Werner Heisenberg]] invents matrix mechanics | |||
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|event= <big> | |event= <big>1924:</big> [[Erwin Schrödinger]] formulates his wave function equation; proves equivalence with matrix | ||
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|event= <big>1927:</big> [[Werner Heisenberg]] propounds the [[Uncertainty Principle]]|width= 90% | |event= <big>1927:</big> [[Werner Heisenberg]] propounds the [[Uncertainty Principle]]|width= 90% | ||
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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. | ||
Revision as of 17:49, 1 April 2008
Founding work
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 gave the unexplainable UV catastrophe.
1900: The study of black body radiation led Max Planck to quantization of energy; full explanation of spectrum, including the ultraviolet (UV).
1905: The photoelectric effect: Explained by Einstein 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.
1913: Niels Bohr's explanation of stationary states of hydrogen atom
1920: Otto Stern and Walther Gerlach conduct the Stern-Gerlach experiment, which demonstrates a doublet nature of spectra, later interpreted as spin.
1924: Louis de Broglie extends the particle-wave duality to cover all particles
1924: Werner Heisenberg invents matrix mechanics
1924: Erwin Schrödinger formulates his wave function equation; proves equivalence with matrix
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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