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NAME SYMBOL VALUE
Free Space, Permeability of µ0 4π × 10-7 N A-2
12.566370614 × 10-7 N A-2
Free Space, Permittivity of ε0 8.854187817 × 10-12 F m-1
Impedence of Vacuum, Characteristic Z0 376.730313461 Ω
Length, Planck ħ/mPc = (ħG/c3)1/2 lP 1.6160(12) × 10-35 m
Magnetic Constant µ0 4π × 10-7 N A-2
12.566370614 × 10-7 N A-2
Mass, Planck (ħc/G)1/2 mP 2.1767(16) × 10-8 kg
Permeability of Free Space µ0 4π × 10-7 N A-2
12.566370614 × 10-7 N A-2
Permittivity of Free Space ε0 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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