Category:Definitions/Planck's Constant

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This category contains definitions related to Planck's Constant.

Planck's constant is the physical constant $h$ which defines the quantum nature of energy and relates the energy of a photon to its frequency.


$E = \dfrac h f$


$E$ denotes the energy of a photon
$f$ denotes the frequency of that photon
$h$ denotes Planck's constant.

It is used for describing the behaviour of particles and waves at an atomic scale.

\(\ds h\) \(=\) \(\ds 6 \cdotp 62607 \, 015 \times 10^{-34}\) joule seconds \(\quad\) This sequence is A003676 in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).
\(\ds \) \(=\) \(\ds 6 \cdotp 62607 \, 015 \times 10^{-27}\) erg seconds

Source of Name

This entry was named for Max Karl Ernst Ludwig Planck.


This category has only the following subcategory.