Constants and Measurement Units 294
Notes:
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_Mn neutron rest mass
1.67492728E
‘M27_kg
_Mp proton rest mass
1.67262171E‘M27_kg
_Na Avogadro’s number 6.0221415E23 /_mol
_q electron charge
1.60217653E
‘M19_coul
_Rb Bohr radius
5.291772108E‘M11_m
_Rc molar gas constant
8.314472_J/_mol/_¡K
_Rdb Rydberg constant 10973731.568525 /_m
_Vm molar volume
2.2413996E
‘M2_m
3
/_mol
_H0
permittivity of a vacuum
8.8541878176204E‘M12_F/_m
_s
Stefan-Boltzmann constant
5.670400E
‘M8_W/_m
2
/_¡K
4
_f0
magnetic flux quantum
2.06783372E‘M15_Wb
_m0
permeability of a vacuum
1.2566370614359E
‘M6_N/_A
2
_mb
Bohr magneton
9.27400949E‘M24_J ø_m
2
/_Wb
Description Value