Constants |
Value |
Abbreviations
|
speed of light in vacuum |
299792458 m·s−1 |
%speed
|
speed of sound in dry air |
343.2 m·s−1
|
newtonian constant of gravitation |
6.6740831e−11 m3·kg−1·s−2 |
%newtonian
|
planck constant |
6.62607004081e−34 J·s |
%plank
|
reduced planck constant |
1.05457180013e−34 J·s
|
magnetic constant vacuum permeability |
1.256637061e−6 N·A−2
|
electric constant vacuum permittivity |
8.854187817e−12 F·m−1 |
%electric
|
characteristic impedance of vacuum |
376.730313461 Ω |
%characteristic
|
coulomb's constant |
8.987551787e9 N·m2·C−2
|
elementary charge |
1.60217656535e−19 C |
%elementary
|
bohr magneton |
9.2740096820e−24 J·T−1 |
%bohr
|
conductance quantum |
7.748091734625e−5 S |
%conductance
|
inverse conductance quantum |
12906.403721742 Ω |
%inverse
|
josephson constant |
4.8359787011e14 Hz·V−1 |
%josephson
|
magnetic flux quantum |
2.06783375846e−15 Wb
|
nuclear magneton |
5.0507835311e−27 J·T−1 |
%nuclear
|
von klitzing constant |
25812.807443484 Ω |
%von
|
bohr radius |
5.291772109217e−11 m |
%bohrradius
|
classical electron radius |
2.817940326727e−15 m |
%classical
|
electron mass |
9.1093829140e−31 kg |
%electronmass
|
fermi coupling constant |
1.1663645e−5 GeV−2 |
%fermi
|
fine-structure constant |
7.297352569824e−3 |
%fine
|
hartree energy |
4.3597443419e−18 J |
%hartree
|
proton mass |
1.67262177774e−27 kg |
%proton
|
quantum of circulation |
3.636947552024e−4 m2 s−1 |
%quantumof
|
rydberg constant |
10973731.56853955 m−1 |
%rydberg
|
thomson cross section |
6.65245873413e−29 m2 |
%thomson
|
weak mixing angle |
0.222321 |
%weak
|
efimov factor |
22.7 |
%efimov
|
atomic mass constant |
1.66053892173e−27 kg
|
avogadro's number |
6.0221412927e23 mol−1
|
boltzmann constant |
1.380648813e−23 J·K−1
|
faraday constant |
96485.336521C·mol−1
|
first radiation constant |
3.7417715317e−16 W·m2
|
first radiation constant for spectral radiance |
1.19104286953e−16 W·m2·sr−1
|
loschmidt constant |
2.686780524e25 m−3
|
gas constant |
8.314462175 J·K−1·mol−1
|
molar planck constant |
3.990312717628e−10 J·s·mol−1
|
molar volume of an ideal gas at T=273.15K and p=100kPa |
2.271095321e−2 m3·mol−1
|
molar volume of an ideal gas at T=273.15K and p=101.325 kPa |
2.241396820e−2 m3·mol−1
|
sackur-tetrode constant at T=1 K and p=100kPa |
−1.151707823
|
sackur-tetrode constant at T=1 K and p=101.325 kPa |
−1.164870823
|
second radiation constant |
1.438777013e−2 m·K
|
stefan–boltzmann constant |
5.67037321e−8 W·m−2·K−4
|
wien displacement law constant |
2.897772126e−3 m·K
|
conventional value of josephson constant |
4.835979e14 Hz·V−1
|
conventional value of von klitzing constant |
25812.807 Ω
|
molar mass constant |
1e−3 kg·mol−1
|
molar mass constant of carbon-12 |
1.2e−2 kg·mol−1
|
standard acceleration of gravity (gee, free-fall on earth) |
9.80665 m·s−2 |
%g
|
gee |
9.80665 m·s−2
|
standard atmosphere |
101325 Pa
|
planck length |
1.61619997e−35 m
|
planck mass |
2.1765113e−8 kg
|
planck time |
5.3910632e−44 s
|
planck charge |
1.87554595641e−18 C
|
planck temperature |
1.41683385e32 K
|