User Tools
Sidebar
math:units
This is an old revision of the document!
Table of Contents
Units and System Conversions
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 |
System Dimensionality Conversions
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 |
Temperature Conversions
$T_F = \frac{9}{5}T_C + 32$
$T_C = \frac{5}{9}(T_F-32)$
$0^{\circ}C = 273.15K$
$0^{\circ}F = 456.67^{\circ}R$3)
$T_R = \frac{5}{9}T_K$
IEC Binary Prefixes
The primary system in which binary unit magnetudes are represented. Intended to replace SI units for digital measurements, where numbers are represented in base-2 rather than base-10. Thus, when referring to units, generally KB is the SI interpretation of $1\cdot 10^3$ whereas 1KiB referrers to the IEC interpretation of $1\cdot 2^10$ in base-2.
| Prefix | Symbol | Factor |
|---|---|---|
| base | none | 2¹ |
| kibi | Ki | 2¹⁰ |
| mebi | Mi | 2²⁰ |
| gibi | Gi | 2³⁰ |
| pebi | Pi | 2⁴⁰ |
| exbi | Ei | 2⁵⁰ |
math/units.1765132121.txt.gz · Last modified: by theorytoe
