Physical Constants

Avogadro′s numberN6.022045x1023 mol-1
Bohr Magnetonβ9.27x10-24 Am2
Boltzmann's constantk1.38062x10-23JK-1
Stefan-Boltzmann Constantσ5.67x10-8 Wm-2K-4
Impedance of Free SpaceZ0 376.730313461 Ohm
Electron volteV1.6021892x10-19 J
Electron chargee1.602x10-19 C
Electron rest massme9.109x10-31 kg
Electron charge to mass ratioe/me1.759x1011 Ckg-1
Faraday constantF9.648456x104 Cmol-1
Permeability of free spaceμ04px10-7Hm-1
Permittivity of free spaceε08.85x10-12 Fm-1
Planck′s constanth6.626x10-34 Js
Proton massmp1.672x10-27 kg
Proton to electron mass ratiomp/me1836.1
Thomson Cross Sectionσe0.665245854x10-28m2
Standard acceleration due to gravityg9.80665 ms-2
Gravitational constantG6.67x10-11Nm2kg-2
Molar gas constantR8.31441 JK-1mol-1
Velocity of light in vacuoc2.997924580x108 ms-1
Wien displacement law constant b2.8977686x10-3 m K

See also: Electron, Neutron, Proton.

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Subjects: Physics