wave mechanics


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Related to wave mechanics: quantum mechanics, Matrix mechanics

wave mechanics:

see quantum theoryquantum theory,
modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity together form the theoretical basis of modern physics.
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Wave mechanics

The modern theory of matter holding that elementary particles (such as electrons, protons, and neutrons) have wavelike properties. In 1924 L. de Broglie postulated that the wave-particle duality which had been demonstrated for electromagnetic radiation also was a property of the elementary particles making up the atoms and molecules forming ordinary matter. In particular, de Broglie postulated that a particle has an associated wavelength obeying the same relation as was found to hold for photons, namely: the wavelength equals Planck's constant divided by the particle's momentum (as customarily defined in elementary mechanics). This hypothesis was verified in 1927 in an experiment in which a beam of electrons having known momentum is diffracted by a crystal into special directions. Such diffraction seems understandable only on the hypothesis that the electrons are waves. Furthermore, the wavelength of the electrons in the incident beam, computed via the same formula as was used to derive x-ray wavelengths in x-ray diffraction experiments, agreed precisely with the de Broglie relation. See Electron diffraction, X-ray diffraction

Subsequent experiments have confirmed that not merely electrons but material particles in general, such as neutrons and neutral sodium atoms, manifest the wave-particle duality and obey the de Broglie relation. The de Broglie relation and the qualitative wave-particle duality concept have been incorporated into the highly successful modern theory of quantum mechanics. See Atom optics, De Broglie wavelength, Interference of waves, Quantum mechanics

wave mechanics

[′wāv mi‚kan·iks]
(quantum mechanics)
References in periodicals archive ?
Schrodinger's wave mechanics and the awarded of the 1932 Nobel Prize in physics [3], it was his fundamental rejection of the classical and the researcher observed subatomic processes concepts of <<position>> and <<impulse <<of the electron in an atom of matter and applying instead the concepts of <<frequency <<and <<amplitude <<of its oscillations, which the researcher can accurately be determined from optical experiment [15].
79, 489-527, translated into English in Collected papers on wave mechanics, together with his four lectures on wave mechanics, third edition augmented, p.
Coulson, "The Contributions of Wave Mechanics to Chemistry," The 1951 Tilden Lecture, Journal of the Chemical Society (1955): 2084.
In 1926-27, just before leaving Zurich, he completed a famous series of papers on wave mechanics, his chief contribution to physics.
For his work on wave mechanics, Schrodinger was awarded a share (along with Dirac--see 1930) of the Nobel Prize for physics in 1933.
Quantisation as a problem of proper values, part I, Annalen der Physik, 1926, 79, 361-372, translated into English in Collected papers on wave mechanics, together with his four lectures on wave mechanics, third edition augmented, p.
Available in English: Heisenberg's Uncertainties and the Probabilistic Interpretation of Wave Mechanics.
Readers should have some background in hydro-dynamics, wave mechanics, differential equations, numerical analysis, and computer programing using common languages such as MATLAB, C, or BASIC.
Among their topics are Isaac Newton and prehistory, Max Planck and the birth of the quantum adventure, Neils Bohr introduces the quantum into atomic physics, Erwin Schrodinger and wave mechanics, eigenstates in the subnuclear world, and Richard Feynman and the strange theory of light and matter.
A chapter for those with little or no background in modern physics or quantum mechanics describes quantum concepts and wave mechanics through a simple derivation of the Schroedinger equation, the electron-in-a-box problem, and the wave functions of the hydrogen atom.
His research dealt with the interrelated developments of quantum mechanics and statistical thermodynamics, and usually concentrated on the work of individual physicists, such as the development of Ludwig Boltzmann's statistical ideas, Josiah Willard Gibb's early work in thermodynamics, Paul Ehrenfest's contributions to the quantum theory, the origins of Erwin Schrodinger's wave mechanics, and the life and work of Niels Bohr and Albert Einstein.
It is less clear how closely he had followed developments in "the new quantum theory"--Schrodinger's wave mechanics, Heisenberg's matrix mechanics, and so forth.