Atomic Units
Quantity
Unit
Value
Mass
m
9.109 38 x 10 -31 kg
Charge
e
1.602 18 x 10 -19 C
Angular Momentum
hbar
1.054 57 x 10 -34 Js
Length
a
5.291 77 x 10 -11 m
Velocity
v=\alpha c
2.187 69 x 10 6 m/s
Time
a/v
2.418 88 x 10 -17 s
Energy
e 2/4\pi\epsilon a = \alpha2m c2 4.359 74 x 10 -18 J = 27.2114 eV
Electric Field Strength
e/4\pi\epsilon a2  5.142 21 x 10 11 V/m
Magnetic Field Strength
\hbar/(e a2 ) 2.350 53 x10 5 T