January 2014
Intermediate to advanced
664 pages
17h 50m
English
Content preview from Microwave and Radar Engineering
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APP D
Physical Constants, Factors for Converting Measurements, and Measurement Unit Prefixes
Physical Constants are given in Table D.1. Factors for converting measurements into the metric system are given in Table D.2. Conversion in the opposite direction can be done by division by the given factor. Measurement unit prefixes and their values are given in Table D.3.
Table D.1 Physical constants
| Constant | Symbol | Value |
|---|---|---|
| Velocity of light in vacuum | c | ~3 × 108 (m/s) |
| Electron charge magnitude | e | 1.602 × 10−19 (C) |
| Mass of electron | me | 9.11 × 10−31 (Kg) |
| Impedance of free space | Z0 | 376.7 Ω |
| Boltzmann constant | k | 1.38 × 10−23 (J/K) |
| Permittivity of free space | ε0 | 8.854 × 10−12 ≈ 10−9/36π F/m |
| Relative permittivity of air | εr | 1 F/m |
| Permeability ... |
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