TABLE OF CONTENTS | Constant | Symbol | Value |
|---|---|---|
| Avogadro s number | A 0 | 6.0221420 10 23 mole ?1 |
| Boltzmann s constant | k | 8.61734 10 ?5 eV/K |
| Electron charge | e | 4.8032042 10 ?10 esu |
| Mass of electron | m e | 0.51099890 MeV/ c 2 9.1093819 10 ?28 gm |
| Fermi s constant | G F( ?c) 3 | 1.16639 10 ?5 GeV ?2 |
| Fine structure constant | | |
| Speed of light | c | 2.99792458 10 10 cm/sec (exact) |
| Newton s gravitational constant | G N | 6.67 10 ?8 cm 3/gm-sec 2 6.71 10 ?39 ?c (GeV/ c 2) ?2 |
| ( Reduced Planck s constant) c | ?c | 197.326960 MeV-fm |
Review of Particle Physics, K.Hagiwara et al, Phys. Rev. D66, 010001 (2002). See also the latest CRC Handbook. The physical constants are uncertain only in the last significant figure given in the table. The value of c is termed exact, and is used to define the meter as the distance traveled by light in 
of a second.
