Electronic Noise and Interfering Signals: Principles and Applications

Appendix Values of General Physical Constants

Constant

Symbol

Value

Electronic charge

q

1.602 10 ?19 C

Electronic mass

m

9.109 10 ?31 Kg

Boltzmann constant

k

1.381 10 ?23 J/K

Planck s constant

h

6.626 10 ?34 Js

Stefan-Boltzmann constant

?

5.670 10 ?8 W/m 2(K) 4

Velocity of light

c

2.998 10 8 m/s

Permeability of free space

? o

1.257 10 ?6 H/m

Permittivity of free space

? o

8.849 10 ?12 F/m

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