Applied Quantum Mechanics, Second Edition

Appendix A: Physical Values

SI-MKS [1.] , [2.]

Speed of light in free space

c = 2 .997 924 58 10 8 ms ?1

Planck s constant

? = 6 .582 118 89(26) 10 ? 16 eV s

= 1 .054 571 596(82) 10 ? 34 Js

Electron charge

e = 1 .602 176 462(63) 10 ? 19 C

Electron mass

m 0 = 9 .109 381 88(72) 10 ? 31 kg

Neutron mass

m n = 1 .674 927 16(13) 10 ? 27 kg

Proton mass

m p = 1 .672 621 58(13) 10 ? 27 kg

Boltzmann constant

k B = 1 .380 650 3(24) 10 ? 23 J K ?1

= 8.617 342(15) 10 ? 5 eV K ?1

Permittivity of free space

? 0 = 8 .854 187 8 10 ? 12 Fm ?1

Permeability of free space

0 = 4 ? 10 ? 7 Hm ?1

Speed of light in free space

Avogadro s number

N A = 6 .022 141 99(79) 10 23 mol ?1

Bohr radius

Inverse fine-structure constant

[1.] See http://physics.nist.gov/constants.

[2.] The numbers in parentheses are one standard deviation uncertainty in the...

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