Constants > Physics > Universal

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NAME SYMBOL VALUE
Characteristic Impedence of Vacuum Z0 376.730313461 Ω
Constant, Dirac's ħ
(h bar)
1.054571596(82) × 10-34 J s
6.58211889(26) × 10-16 eV s
Constant, Electric (1/µ0c2) ε0 8.854187817 × 10-12 F m-1
Constant, Fermi 1.4 × 10-50 J m-3
Constant, Magnetic µ0 4π × 10-7 N A-2
12.566370614 × 10-7 N A-2
Constant, Planck (h) h 6.62606876(52) × 10-34 J s
4.13566727(16) × 10-15 eV s
Constants, Planck (h/2π) ħ
(h bar)
1.054571596(82) × 10-34 J s
6.58211889(26) × 10-16 eV s
Dirac's Constant ħ
(h bar)
1.054571596(82) × 10-34 J s
6.58211889(26) × 10-16 eV s
Electric Constant (1/µ0c2) ε0 8.854187817 × 10-12 F m-1
Fermi Constant 1.4 × 10-50 J m-3

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