Science
Constants - G to I

Gg | Hh | Ii
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Gg
  Name Symbol Value  
Electron Particle Constants g-Factor, Electron ge -2.0023193043737(82) 
 
Muon Particle Constants g-Factor, Muon gµ -2.0023318320(13) 
 
Neutron Particle Constants g-Factor, Neutron 2µnN gn -3.82608545(90) 
 
Proton Particle Constants g-Factor, Proton 2µpN gp 5.585694675(57) 
 
Units of Volume Gallon, UK 4.546 × 10-3 m3
1.201 US gallon
 
Units of Volume Gallon, US 3.785 × 10-3 m3
0.833 UK gallon
 
Gas Constant R 8.314 J K-1 mol-1
 
Physico-Chemical Constants Gas Constant, Molar R 8.314472(15) J mol-1 K-1
 
Units of Mass Geepound 14.59390294 kg
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Refractive Indices Glass, Refractive Index of ng 1.50 
 
Glass, Thermal Conductivity of kg 1.0 W m-1 K-1
 
General Mathematical Constants Gold Number φ 1.61803398874989484820 
 
General Mathematical Constants Golden Mean φ 1.61803398874989484820 
 
General Mathematical Constants Golomb-Dickman Constant λ 0.6243299885 
 
Units of Mass Grain 0.06479 g
 
Gravitational Constants Gravitation, Newtonian Constant of G
G/ħc
6.673(10) × 10-11 m3 kg-1 s-1
6.707(10) × 10-39 (GeV/c2)-2
 
Astronomical Values Gravitational Acceleration, Moon's 1.619 m s-2
 
Gravitational Constants Gravitational Constant G 6.673(10) × 10-11 N m2 kg-2
 
Gravitational Constants Gravity, Acceleration due to g 9.80665 m s-2
32.1740 ft s-2
Click for More Info on Gravity, Acceleration due to
Units of Length Gunter's Chain ch 20.1168 m
Click for More Info on Gunter's Chain
Electron Particle Constants Gyromagnetic Ratio, Electron γe
γe/2π
1.760859794(71) × 1011 s-1 T-1
28024.9540(11) MHz T-1
 
Neutron Particle Constants Gyromagnetic Ratio, Neutron 2|µn|/ħ γn
γn/2π
1.83247188(44) × 108 s-1 T-1
29.1646958(70) MHz T-1
 
Proton Particle Constants Gyromagnetic Ratio, Proton 2µp γp
γp/2π
2.67522212(11) × 108 s-1 T-1
42.5774825(18) MHz T-1
 
Proton Particle Constants Gyromagnetic Ratio, Shielded Proton 2µp/ħ (H2O, sphere, 25°C) γ'p
γ'p/2π
2.67515341(11) × 108 s-1 T-1
42.5763888(18) MHz T-1
 

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Hh
  Name Symbol Value  
General Mathematical Constants Hafner-Sarnak-McCurley Constant 0.3532363719 
 
Half-life of Carbon-14 T 5570 years
 
Half-life of Free Neutron T 650 s
 
General Mathematical Constants Hard Square Entropy Constant κ 1.503048082 
 
General Atomic and Nuclear Constants Hartree Energy Eh 4.35974381(34) × 10-18 J
27.2113834(11) eV
 
Units of Area Hectare ha 104 m2
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Astronomical Values Horizontal Component of Earth's Magnetic Field B0 1.8 × 10-5 T
 
Units of Mass Hundredweight (UK) cwt 5.08 × 104 g
 
Units of Mass Hundredweight, Short (US) short
cwt
4.535 × 104 g
 
Hydrogen Rydberg Number RH 1.0967758 × 107 m-1
 

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Ii
  Name Symbol Value  
Universal Constants Impedence of Vacuum, Characteristic Z0 376.730313461 Ω
Click for More Info on Impedence of Vacuum, Characteristic
Units of Volume Imperial Pint 5.682 × 10-4 m3
 
Units of Length Inch in
"
0.254 m
 
Units of Volume Inch, Cube in3
cu. in.
1.6387064 × 10-5 m3
 
Units of Length International Nautical Mile 1852 m
 
Electromagnetic Constants Inverse Conductance Quantum G0-1 12906.403786(47) Ω
 
General Atomic and Nuclear Constants Inverse Fine Structure Constant α 137.03599976(50) × 10-3 
 

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Page compiled: Wed Sep 05 18:37:52 GMT+01:00 2001