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Table of Prefixes 1)
| prefix | symbol | factor |
|---|---|---|
| exa | E | 10¹⁸ |
| peta | P | 10¹⁵ |
| tera | T | 10¹² |
| giga | G | 10⁹ |
| mega | M | 10⁶ |
| kilo | k | 10³ |
| deka | d | 10² |
| base | none | 10⁰ |
| centi | c | 10⁻² |
| milli | m | 10⁻³ |
| micro | μ | 10⁻⁶ |
| nano | n | 10⁻⁹ |
| pico | p | 10⁻¹² |
| femto | f | 10⁻¹⁵ |
| atto | a | 10⁻¹⁸ |
From Dimensional_analysis
There are many possible choices of base physical dimensions. The SI standard selects the following dimensions and corresponding dimension symbols:
time (T), length (L), mass (M), electric current (I), absolute temperature (Θ), amount of substance (N) and luminous intensity (J).
| Dim | SI | UCS2) |
|---|---|---|
| L | 2.54cm | 1in |
| M | 2.2046kg | 1lb |
$T_F = \frac{9}{5}T_C + 32$
$T_C = \frac{5}{9}(T_F-32)$
$0^{\circ}C = 273.15K$
$0^{\circ}F = 456.67^{\circ}R$3)
$T_R = \frac{5}{9}T_K$