Heat Transfer Physics

| |
| |
| Symbol | Magnitude and Units |
|---|---|
| Fundamental constants: | |
| c o | speed of light in vacuum, 2 .99792458 10 8 m/s |
| e c | electron charge, 1 .602 10 ? 1 9 C (1 eV = 1 .602 10 ? 1 9 J where V = J/C) |
| G N | Newton (gravitational) constant, 6 .673 10 ? 1 1 m 3 /kg-s 2 |
| h P | Planck constant, 6 .626 10 ? 3 4 J-s = 4 .136 10 ? 1 5 eV-s |
| ? | h P /2 ? = 1 .055 10 ?34 J-s = 6 .583 10 ?16 eV-s |
| k B | Boltzmann constant, 1 .381 10 ? 2 3 J/K = 8 .618 10 ?5 eV/K |
| m e | electron mass, 9 .109 10 ? 3 1 kg |
| m n | neutron mass, 1 .675 10 ? 2 7 kg |
| m p | proton mass, 1 .673 10 ? 2 7 kg |
| N A | Avogadro number, 6 .022 10 23 |