Wenteq Microwave Corp
RF & Microwave Components
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Quantity Symbol Value Units Relative Uncertainty (ppm)
Speed of light in Vacuum c 299 792 458 Ms-1  (exact)
Permeability of vacuum 0 4p10-7=12.566 370614 NA-210-7 NA-2 (exact)
Permittivity of vacuum e0 1/0c2=8.854 187 817 10-12Fm-1 (exact)
Newtonian constant of gravitation G 6.672 59 10-11m3kg-1s-2 128
Planck constant h 6.626 0755 10-34Js 0.60
h/2p h 1.054 572 66 10-34Js 0.60
Elementary charge e 1.602 177 33 10-19C 0.30
Magnetic flux quantum,h/2e ?0 2.067 834 61 10-15Wb 0.30
Electron mass me 9.109 3897 10-31kg 0.59
Proton mass mp 1.672 6231 10-27kg 0.59
Proton-electron mass ratio mp/me 1836.152701   0.020
Fine-structure constant,0ce2/2h a 7.297 353 08   0.045
Inverse fine-structure constant a-1 137 035 9895 10-3 0.045
Rydberg constant, meca2/2h R8 10 973 731.534 m-1 0.0012
Avogadro constant NAL 6.022 1367 1023mol-1 0.59
Faraday constant, NAe F 96 485.309 C mol-1 0.30
Molar gas constant R 8.314 510 J mol-1K-1 8.40
Boltzmann constant, R/NA k 1.380 658 10-23JK-1 8.50
Stafan-Boltzmann constant, (p2/60)k4/h3c2 s 5.670 51 10-8Wm-2K-4 34
Non-SI units used with SI

     Electronvolt, (e/C)J = {e}J      (Unified) atomic mass unit, 1u=mu= 1/12m(12C)

eV

 u

 

1.602 17733

1.660 5402

 

10-19J

10-27kg

0.30

0.59


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