|
Symbol
|
Value[1] (SI units)
|
Relative Standard Uncertainty
|
atomic mass unit (unified atomic mass unit)
|
|
1.660 538 86(28) × 10−27 kg
|
1.7 × 10−7
|
Avogadro's number
|
|
6.022 141 5(10) × 1023 mol−1
|
1.7 × 10−7
|
Boltzmann constant
|
|
1.380 6504(24) × 10−23 J·K−1
|
1.8 × 10−6
|
Faraday constant
|
|
96 485.3383(83)C·mol−1
|
8.6 × 10−8
|
first radiation constant
|
|
|
3.741 771 18(19) × 10−16 W·m²
|
5.0 × 10−8
|
for spectral radiance
|
|
1.191 042 82(20) × 10−16 W·m² sr−1
|
1.7 × 10−7
|
Loschmidt constant
|
at =273.15 K and =101.325 kPa
|
|
2.686 777 3(47) × 1025 m−3
|
1.8 × 10−6
|
gas constant
|
|
8.314 472(15) J·K−1·mol−1
|
1.7 × 10−6
|
molar Planck constant
|
|
3.990 312 716(27) × 10−10 J·s·mol−1
|
6.7 × 10−9
|
molar volume of an ideal gas
|
at =273.15 K and =100 kPa
|
|
2.2710 981(40) × 10−2 m³·mol−1
|
1.7 × 10−6
|
at =273.15 K and =101.325 kPa
|
2.2413 996(39) × 10−2 m³·mol−1
|
1.7 × 10−6
|
Sackur-Tetrode constant
|
at =1 K and =100 kPa
|
|
−1.151 704 7(44)
|
3.8 × 10−6
|
at =1 K and =101.325 kPa
|
−1.164 867 7(44)
|
3.8 × 10−6
|
second radiation constant
|
|
1.438 775 2(25) × 10−2 m·K
|
1.7 × 10−6
|
Stefan–Boltzmann constant
|
|
5.670 400(40) × 10−8 W·m−2·K−4
|
7.0 × 10−6
|
Wien displacement law constant
|
4.965 114 231...
|
2.897 768 5(51) × 10−3 m·K
|
1.7 × 10−6
|