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Physics
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Universal
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NAME
SYMBOL
VALUE
Free Space, Permeability of
µ
0
4π × 10
-7
N A
-2
12.566370614 × 10
-7
N A
-2
Free Space, Permittivity of
ε
0
8.854187817 × 10
-12
F m
-1
Impedence of Vacuum, Characteristic
Z
0
376.730313461 Ω
Length, Planck ħ/m
P
c = (ħG/c
3
)
1/2
l
P
1.6160(12) × 10
-35
m
Magnetic Constant
µ
0
4π × 10
-7
N A
-2
12.566370614 × 10
-7
N A
-2
Mass, Planck (ħc/G)
1/2
m
P
2.1767(16) × 10
-8
kg
Permeability of Free Space
µ
0
4π × 10
-7
N A
-2
12.566370614 × 10
-7
N A
-2
Permittivity of Free Space
ε
0
8.854187817 × 10
-12
F m
-1
Planck Constant (h)
h
6.62606876(52) × 10
-34
J s
4.13566727(16) × 10
-15
eV s
Planck Constant (h/2π)
ħ
(h bar)
1.054571596(82) × 10
-34
J s
6.58211889(26) × 10
-16
eV s
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