User Manual

20200101
Category Quantity Value
Atomic & nuclear
α
: fine-structure constant 7.2973525664E−3
R
∞
: Rydberg constant 10973731.568508
a
0
: Bohr radius 0.52917721067E−10
m
e
: electron mass 9.10938356E−31
μ
e
: electron magnetic moment −928.4764620E−26
m
μ
: muon mass 1.883531594E−28
μ
μ
: muon magnetic moment −4.49044826E−26
m
τ
: tau mass 3.16747E−27
m
p
: proton mass 1.672621898E−27
μ
p
: proton magnetic moment 1.4106067873E−26
m
n
: neutron mass 1.674927471E−27
μ
n
: neutron magnetic moment −0.96623650E−26
Physico-chemical N
A
: Avogadro constant 6.022140857E23
m
u
: atomic mass constant 1.660539040E−27
F : Faraday constant 96485.33289
R : molar gas constant 8.3144598
k : Boltzmann constant 1.38064852E−23
V
m
: molar volume of ideal gas
(273.15 K, 100 kPa)
22.710947E−3
σ
: Stefan-Boltzmann constant 5.670367E−8
Adopted values K
J–90
: conventional value of Josephson
constant
483597.9
R
K–90
: conventional value of von Klitzing
constant
25812.807
g
n
: standard acceleration of gravity 9.80665
4-2
Fundamental Physical Constants