TABLE OF CONTENTS The SI values in this table are from P. J. Mohr and B. N. Taylor, "CODATA Recommended Values of the Fundamental Physical Constants: 2002," Rev. Mod. Phys. 76, no. 4 (2004) (also accessible online at http://www.physics.nist.gov/constants). This compilation contains a more extensive list of best available values of fundamental constants. The digits in parentheses are the one-standard-deviation uncertainties in the last digits of the listed value. Whenever two alternative formulas are given for a quantity (e.g., Bohr magneton, e?/2 m e or e?/2 m e c), the first is in SI units and the second in CGS electrostatic units.
| Quantity | Symbol | Value (and uncertainty) | SI Units | CGS Units |
|---|---|---|---|---|
| Speed of light in vacuum | c | 299792458 | m s ?1 | 10 2 cm s ?1 |
| Permeability |
| |||
| of vacuum | ? 0 | 4 ? = 12.566370614 | 10 ?7 N A ?2 |
|
| Permittivity of vacuum | ? 0 | 1/ ? 0 c 2 = 8.854187817 | 10 ?12 F m ?1 |
|
| Newtonian constant of gravitation | G | 6.6742(10) | 10 ?11 m 3 kg ?1 s ?2 | 10 ?8 cm 3 gm ?1 s ?2 |
| Planck constant | h | 6.6260693(11) | 10 ?34 J s | 10 ?27 erg s |
| in electron volts | 4.13566743(35) | 10 ?15 eV s |
| |
| h/2 ? | ? | 1.05457168(18) | 10 ?34 J s | 10 ?27 erg s |
| in electron volts | 6.58211915(56) | 10 ?16 eV... |
