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Constants
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C to D
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G to I
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M
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Science

Constants - G to I


Gg
| Hh |  Ii
A to B | C to D | E to F | G to I | J to L | M | N to Q | R to T | U to Z

  Gg  
    Name Symbol Value  
           
  g-factor, electron g-Factor, Electron ge -2.002 319 304 3737 ± 0.000 000 000 0082  
           
  g-factor, Muon g-Factor, Muon gµ -2.002 331 8320 ± 0.000 000 0013  
           
  g-factor, Neutron g-Factor, Neutron 2µnN gn -3.826 085 45 ± 000 000 90  
           
  g-factor, Proton 2 micro of p g-Factor, Proton 2µpN gp 5.585 694 675 ± 0.000 000 057  
           
  Gallon, UK Gallon, UK   4.546 × 10−3  m3
1.201 US gallon
 
           
  Gallon, US Gallon, US   3.785 × 10−3 m3
0.833 UK gallon
 
           
    Gas Constant R 8.314 J K−1  mol−1
 
           
  Gas Constant or Molar Gas Constant Gas constant
Molar gas constant
R 8.314 472 ± 0.000 015 J mol−1  K −1  
           
  Geepound Geepound   14.59390294 kg  
           
    Gill (UK)
Noggin
  5 fl oz
0.25 pint
1.420 6525 × 10−4 m3
 
           
    Gill (US)   0.25 lq pt
7.218 75 in 3
1.182 94 × 10−4 m3
 
           
  Glass, Refractive Index of Glass, Refractive Index of ng 1.50
 
           
    Glass, Thermal Conductivity of kg 1.0 W m −1  K−1
 
           
  Gold Number Gold Number φ 1.618 033 988 749 894 848 20  
           
  Golden Mean or Golden Ratio Golden Mean
Golden Ratio
φ 1.618 033 988 749 894 848 20  
           
  Golomb-Dickman Constant Golomb-Dickman Constant λ 0.6243299885  
           
    Grade   0.9°, π/200 rad  
           
  Grain Grain   0.06479 g  
           
    Grain   1/7000 = 1.428 571 4285× 10−4 lb
6.479 891 × 10−5 kg
 
           
  Gravitation, Newtonian Constant of Gravitation, Newtonian Constant of G 6.673 ± 0.010 × 10−11 m3 kg−1 s−1  
      G/ħc 6.707 ± 0.010 × 10−39  (GeV/c2)−2  
           
  Gravitational Acceleration, Moon's Gravitational Acceleration, Moon's   1.619 m s−2  
           
  Gravitational Constant or Constant of Gravitation Gravitational constant
Constant of gravitation
G 6.673 ± 0.010 × 10−11  N m2 kg−2  
           
  Gravity, Acceleration due to Gravity, Acceleration due to g 9.806 65 m s−2  
        32.1740 ft s−2  
           
    Gray Gy 1 J kg−1
100 rad
 
           
  Gunter's chain Gunter's Chain ch 20.1168 m  
           
  Gyromagnetic Ratio, Electron Gyromagnetic Ratio, Electron γe 1.760 859 794 ± 0.000 000 071 × 1011  s−1  T−1  
      γe/2π 28024.9540 ± 0.0011 MHz T−1  
           
  Gyromagnetic Ratio, Neutron 2 Gyromagnetic Ratio, Neutron 2|µn|/ħ γn 1.832 471 88 ± 0.000 000 44  × 108  s−1  T−1  
      γn/2π 1.832 471 88 ± 0.000 000 44 × 108  s−1  T−1  
           
  Gyromagnetic Ratio, Proton 2 Gyromagnetic Ratio, Proton 2µ p/ħ γp 2.675 222 12 ± 0.000 000 11 × 108 s−1 T−1  
      γp/2π 42.577 4825 ± 0.000 0018 MHz T−1  
           
    Gyromagnetic Ratio, Shielded Proton2µ p/ħ (H2O, sphere, 25°C)      
  Gamma of p divided by 2 pi γ'p 2.675 153 41 ± 0.000 000 11 × 108 s−1 T−1  
    γ'p/2π 42.576 3888 ± 0.000 0018 MHz T−1  
           
 
 
 
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  Hh  
    Name Symbol Value  
           
  Hafner-Sarnak-McCurley Constant Hafner-Sarnak-McCurley Constant   0.353 236 3719  
           
    Half-life of Carbon-14 T 5570 years  
           
    Half-life of Free Neutron T 650 s
 
           
  Hard Square entropy Constant Hard Square Entropy Constant κ 1.503 0480 82  
           
  Hartree Energy Hartree Energy Eh 4.359 743 81 ± 0.000 000 34 × 10−18 J  
        27.211 3834 ± 0.000 0011 eV  
           
    Hand   4 in
0.1016 m
 
           
  Hectare Hectare ha 104 m2  
           
    Helion mass mh 5.006 411 74 ± 0.000 000 39 × 10−27 kg
3.014 932 234 69 ± 0.000 000 000 86 u
4.499 538 48 ± 0.000 000 35 × 10−10 J/ c2
2808.391 32 ± 0.000 11 MeV/ c2
 
           
    Helion-electron mass ratio mh/me 5495.885 238 ± 0.000 012  
           
    Helion-proton mass ratio mh/mp 2.993 152 658 50 ± 0.000 000 000 93  
           
    Horsepower   735.498 75 W  
           
    Hour h 60 min
3600 s
 
           
  Horizontal Component of Earth's Magnetic Field Horizontal Component of Earth's Magnetic Field B0 1.8 × 10−5 T  
           
  Hundredweight (UK) Hundredweight
Quintal (UK)
cwt 112 lb
50.802 345 44 kg
 
           
  Hundredweight, Short Hundredweight, Short (US) short 4.535 × 104  g  
      cwt    
           
    Hydrogen Rydberg Number RH 1.096 7758 × 107 m−1  
           
 
 
 
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A to B | C to D | E to F | G to I | J to L | M | N to Q | R to T | U to Z

 
   
   
   
   
  Ii  
    Name Symbol Value  
           
  Impedence of Vacuum, Characteristic Impedence of Vacuum, Characteristic Z0 376.730 313 461 Ω  
           
  Imperial pint Imperial Pint   5.682 × 10−4  m3  
           
  in Inch in 0.0254 m  
      "    
           
  in cubed Inch, Cube in3 1.638 7064 × 10−5  m3  
      cu. in.    
           
  International Nautical Mile International Nautical Mile   1852 m  
           
  Inverse Conductance Quantum Inverse Conductance Quantum G0−1 12906.403 786 ± 0.000 047 Ω  
           
  Inverse Fine Structure Constant Inverse Fine Structure Constant α 137.035 999 76 ± 0.000 000 50 × 10−3  
           
 
 
 
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