Planck's constant

Planck's constant  (plängks)

n. Symbol h

The constant of proportionality relating the energy of a photon to the frequency of that photon. Its value is approximately 6.626 × 10^-34 joule-seconds.

---

[After Max Karl Ernst Ludwig Planck.]

---

Planck's constant  (plängks)

A physical constant that is used extensively in quantum mechanics and fixes the scale of quantization of many phenomena, such as the relation between the energy of a photon (a quantum of light) and its wavelength. Its value is approximately 6.626 × 10^-34 joule-seconds (equivalent to units of angular momentum). Planck's constant is fundamental to phenomena as the quantization of angular momentum and is used in Heisenberg's Uncertainty Principle. See also Dirac's constantquantize

Thesaurus

Noun

1.

Planck's constant - the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second h constant of proportionality, factor of proportionality - the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality