Useful Conversion Factors between Units of Fundamental Physical Constants

useful conversion factors between units of Fundamental Physical Constants
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Useful Conversion Factors between Units of Fundamental Physical Constants

 

Certain fundamental physical constants have special importance on account of their universality or place in fundamental theory. A lot of early scientific work was done using the CGS system that has as base units the centimetre, gram and second. The table below lists the more common conversion factors between SI and CGS units.

 

Table 1: Length
CGS unit SI unit Reciprocal  
1 inch (in)
= 2.54 * 10-2 m
39.370079
  
1 foot (ft)
= 0.3048 m
3.280839
  
1 yard (yd)
= 0.9144 m
1.093613
  
1 mile (mi)
= 1.609344*103 m
6.213712 * 10-4
  

 

Table 2: Area
CGS unit SI unit Reciprocal  
1 in2
= 6.4516 * 10-4m2
1.550003 *103
  
1 ft2
= 9.290304 * 10-2 m2
10.763910
  
1 yd2
= 0.836127 m2
1.195990
  
1 mi2
= 2.589988*106 m2
3.861022 * 10-7
  

 

 

Table 3: Volume
CGS unit SI unit Reciprocal  
1 in3
= 1.638706 * 10-5m3
6.102374 *104
  
1 ft3
= 2.831685 * 10-2 m3
35.31467
  
1 yd3
= 0.764555 m3
1.307950
  

 

 

Table 4: Mass
CGS unit SI unit Reciprocal  
1 ounce (oz)
= 2.834952 * 10-2 kg
35.273962
  
1 pound (lb)
= 0.45359237 kg
2.204623
  
1 ton
= 1.016047 * 103 kg
9.842065 * 10-4
  

 

 

Table 5: Miscellaneous
       
1 Â
= 10-10 m
    
1 amu
= 1.6605402 * 10-24 g
    
0 K
= -273.15 °C
    
1 Pa = 1 N.m-1
= 1 kg . m-1 .s-2
    
1 atm = 101,325 Pa
= 760 torr = 14.70 lb.in-2
    

 

References

  1. P.J. Mohr and B.N. Taylor, J. Phys. Chem. Ref. Data, 28, 1713 (1999)
  2.  P.J. Mohr and B.N. Taylor, Rev. Mod. Phys., 72, 351 (2000)
  3. Physical Constants
  4. R.M. Tennent, "Science Data Book", Oliver & Boyd, (1979)

Key Terms

fundamental physical constants, chemical data, physical data, thermochemical data

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