Wien frequency displacement law constant = 5.878 925 757... × 1010 Hz·K⁻¹

Value
5.878 925 757... × 1010
Unit
Hz·K⁻¹
Uncertainty
exact (by definition)
Copy-ready
5.878925757e10

The Wien frequency displacement constant b′: the peak frequency of black-body radiation per kelvin.

Peak frequency = b′ × T. It does not give the same peak as the wavelength form, because the spectrum per unit frequency is shaped differently.

NIST, Fundamental Physical Constants — Complete Listing (2022 CODATA adjustment), retrieved 2026-07-26.

Electrical, thermal and X-ray constants

Angstrom starConductance quantumCopper x unitElectron charge to mass quotientFermi coupling constantFirst radiation constantHartree energyJosephson constantLattice parameter of siliconLattice spacing of ideal Si (220)Loschmidt constant (273.15 K, 101.325 kPa)Magnetic flux quantumMolar mass constantMolar mass of carbon-12Molar Planck constantMolar volume of siliconMolybdenum x unitNeutron-proton mass differenceProton charge to mass quotientQuantum of circulationSackur-Tetrode constant (1 K, 101.325 kPa)Second radiation constantVon Klitzing constantWeak mixing angleWien frequency displacement law constantW to Z mass ratio

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All physical constants

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