Sackur-Tetrode constant (1 K, 101.325 kPa) = -1.164 870 521 49 (dimensionless)
- Value
- -1.164 870 521 49
- Unit
- (dimensionless)
- Uncertainty
- 0.000 000 000 47
- Copy-ready
-1.16487052149
The Sackur–Tetrode constant S₀/R: the entropy constant of a monatomic ideal gas at 1 K and one standard atmosphere.
Fixes the absolute entropy of ideal monatomic gases in statistical mechanics; the 100 kPa value is listed beneath.
The same quantity, other ways NIST lists it
| Quantity (NIST name) | Value | Unit | Uncertainty |
|---|---|---|---|
| Sackur-Tetrode constant (1 K, 100 kPa) | -1.151 707 534 96 | (dimensionless) | 0.000 000 000 47 |
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