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.

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.

where [DELTA]E is the energy gained by the virtual particle during the time interval [DELTA]t, that is equivalent to the mass/energy of the real particle that would exchange with it, and h is the

Planck constant.

Liu, Towards an electronic kilogram: an improved measurement of the

Planck constant and electron mass, Metrologia 42, 431-441 (2005).

Kibble at England's National Physical Laboratory, this method offers a precise value of the

Planck constant, from which one derives Avogadro's number.

The energy values and the neutron wave functions in such a system depend on m, g, on the

Planck constant and on the quantum number n only.

The National Institute of Standards and Technology (NIST) watt balance experiment completed a determination of

Planck constant in 1998 with a relative standard uncertainty of 87 X [10.