Planck constant


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to Planck constant: Joule, electron volt

Planck constant

or

Planck's constant

n
(General Physics) a fundamental constant equal to the energy of any quantum of radiation divided by its frequency. It has a value of 6.62606876 × 10–34 joule seconds. Symbol: h See also Dirac constant
Translations
References in periodicals archive ?
Working in an underground laboratory of one metre thick concrete walls formerly used for atomic physics research, NRC scientists have measured the Planck constant with a precision of 9.
This equation demonstrates that for the white hole as the world-generating source the mass generation rate has a constant value and the lack of the Planck constant in it testifies that it is specialized without any need of quantum mechanics.
These include the Planck constant, which describes the scale of the quantum realm; the Boltzmann constant, which relates temperature and energy; the Avogadro constant, which sets the number of atoms or molecules that make up a mole; and the magnitude of the charge of an electron or proton, also known as the elementary charge.
The Planck constant was problematic in the past, as there were disagreeing values obtained by different experiments.
Quantum physics is a branch of physics dealing with physical phenomena at microscopic scales, where the action is on the order of the Planck constant.
Quantum-entropic logic theory offered a formula for information wave radiation quantum, which links in with energy of a system through Planck constant.
hfs]; the speed of light in vacuum c; the Planck constant h; the elementary charge e (charge of a proton); the Boltzmann constant k; the Avogadro constant [N.
The results can be used to define the kilogram in terms of the Planck constant that relates the frequency of a particle's wavefunction to its energy.
where [lambda] is wavelength, T is the absolute temperature, h is the Planck constant and c is the speed of light.
where [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is the momentum operator and h is the reduced Planck constant, can be expressed using (2) as
Liu, Towards an electronic kilogram: an improved measurement of the Planck constant and electron mass, Metrologia 42, 431-441 (2005).
The Planck constant serves numerous roles in quantum mechanics, including setting limits on how much can be simultaneously known about a particle's momentum and position.