The name of the Quantity.
Symbol (symbol)
Value; value
Ordinary constant
(general constant)
The speed of light in vacuum
(the speed of light in a vacuum)
c
2.99792458x108m/s
Vacuum permeability
(Permeability of vacuum)
μ0
4πx 10-7 = 1.25663706 143592 x 10-6
Height/meter
Vacuum dielectric constant
(Dielectric constant of vacuum)
? ε0
1/(μ0c2)
Planck constant
(Planck constant)
h
6.626 176x 10-34 J s
9 = h/2？
1.054589x 10-34 J s
gravitational constant
(Gravity constant)
G
6.672 x 10- 1 1n·m2/kg2
Gravity acceleration (standard gravity acceleration)
g
9.80665 m3/sec 2
Electromagnetic constant (electromagnetic constant)
Meta-charge
(Basic cost)
e
1.602 189 x 10- 19 C
Magnetic flux quantum
(magnetic flux)
? 0
2.06785 1x 10- 15 Wb
bohr magneton
μB = eh/2mec
9.274078x 10-24 J/T
nuclear magneton
μN = e9 /2mpc
5.050824x 10-27 joules/ton
atomic constant
(atomic constant)
Fine structure constant
(Fine structure constant)
?
7.29735 1x 10-3
Rydberg constant
(Rydberg constant)
R∞=mec2/2h
1.09737318x107/m
bohr radius
(Bohr radius)
a0
0.52917706x10-10m
Hartley energy co
(Hartree Energy Company)
ah
27.2 1 16 ev
Circulation quantum
(circulation)
I/I
7.27389x 10-4 Joules/kg
Electronic mass (electronic mass)
I
9.10953x10-31kg
proton mass
parliamentarian
1.672649x10-27kg
Neutron mass
manganese
1.674954x10-27kg
Physical and chemical constants (physical and chemical constants)
Avogadlow constant
(Avogadro constant)
NA or l
6.022045 x 1023/ mol
atomic mass unit
(Atomic mass unit)
atomic mass unit
1.660566x10-27kg
Faraday constant
(Faraday constant)
F = NAe
9.648456x 104 C/mol
molar gas constant
(Molar gas constant)
rare
8.3 144 1 joule/(thousand moles)
boltzmann constant
(Boltzmann constant)
k
1.380662x 10-23 J/K
Molar volume of ideal gas in standard state
[molar volume, ideal gas]
(at 273. 15K,101.325kpa)
voltmeter
22.4 138 liters
standard atmospheric pressure
(standard atmosphere)
-
10 1325 Pa