Alliance Units of Measurement
20090319
This page defines the most common measurement units in use in the Alliance. Where there are equivalents in our system, they will be included. Rounding will be done to the fifth significant decimal place when exact figures cannot be calculated. The letter "m" in any table refers to meters.
Distance computations are based on the speed of light = 299,792,458 meters/second, in SI meters.
| Unit Multiplier Prefixes | |||
|---|---|---|---|
| Positive Exp | Value | Negative Exp | Value |
| La- | 10^1 | Li- | 10^-1 |
| Ka- | 10^2 | Ki- | 10^-2 |
| Va- | 10^3 | Vi- | 10^-3 |
| Sa- | 10^6 | Si- | 10^-6 |
| Na- | 10^9 | Ni- | 10^-9 |
| Da- | 10^12 | Di- | 10^-12 |
| Ba- | 10^15 | Bi- | 10^-15 |
| Pa- | 10^18 | Pi- | 10^-18 |
| Ha- | 10^21 | Hi- | 10^-21 |
If a prefix results in a double vowel, a "t" is added to the pronunciation. Ex: saexora is pronounced "satexora".
| Units of Time Measurement | |
|---|---|
| Unit of time | Value of unit |
| Rhek (reck) | 43.19583144 seconds exact |
| Karhek (kah-reck) | 100 rhek = 71.9930524 minutes exact |
| Galun (gah-lun) | 1 Kakrek (GALactic UNit, for use in English) |
| Redaar (red-ahr) | 20 Karheks = 23.9976841333... hours = 1 Galactic Day |
| Cendrol (sen-droll) | 100 Redaars |
| Ardrol (ahr-droll) | 500 Redaars or 5 Cendrols = 1 Galactic Year |
| Mildrol (mill-droll) | 100 Cendrols or 20 Ardrols |
| Drolen (droll-en) | 1000 Cendrols or 200 Ardrols |
Note: the above units are the Alliance standard values. Individual planets have their own time systems based on their day length. For example, Korendor's "local" time is based on the day length of 24h 19m 31.0632s. When referring to the planetary timekeeping system, if the same terms are used, they are given a suffix to differentiate them from the standards.
| Units of Length, Area and Volume | ||
|---|---|---|
| Unit of measure | 3-dimensional | 4-dimensional |
| Length | Thali (thah-lee) | Thali-karta |
| Area | Thalu (thah-loo) | Thalu-karta |
| Volume | Thalo (thal-oh) | Thalo-karta |
| Thali = Wavelength of a frequency of 1 savibar (23,150,380 Hz or 23.150380 MHz) = 12.95 meters Thali = 12.95 meters = 42.48675 feet Thalu = 167.7025 meters˛ = 1805.135 feet˛ Thalo = 2171.747375 metersł = 76,694.53 feetł Note: 4-D computations are far beyond the scope of this page. The units are mentioned only for reference purposes. |
| Units of Speed | |
|---|---|
| Unit | Definition |
| Thalir (thah-leer) | Thali per kirhek = 29.97924 m/s = 98.35681 f/s |
| Kithalir (key-thah-leer) | Kithali per kirhek = 0.29979 m/s = 0.98357 f/s |
| Units of Acceleration | |
|---|---|
| Unit | Definition |
| Thalari (that-lahr-ee) | Thali/kirhek/kirhek = 29.97924 m/s/s = 98.35681 f/s/s |
| Thaliri (thah-leer-ee) | Kithali/kirhek/kirhek = 0.29979 m/s/s = 0.98357 f/s/s |
| Unit of Mass | |
|---|---|
| Unit | Definition |
| Lara (lah-rah) | Lara = Mass of 1 nithalo of pure water at 462.8424 saden (39.2°F or 4°C) = 2.17164 grams |
| Units of Force | |
|---|---|
| Unit | Definition |
| Exora (ek-sor-ah) | Force to accelerate 1 lara of mass at 1 Thaliri = 65.10412 dynes |
| Saexora (sah-tek-sor-ah | One million exora or 146.35988 pounds of force (lbf) (pronounced with the 't' to avoid double vowel) |
| Units of Pressure | |
|---|---|
| Unit | Definition |
| Thalex (thah-lex) | 1 Saexora of force on an area of 1 Lithalu = 1.23330 psf = 0.0085646 psi |
| Vathalex (vah-thah-lex) | 1000 Thalex = 1233.30 psf = 8.5646 psi (common use) |
| Unit of Circular Measure | |
|---|---|
| Unit | Definition |
| Vaeri (vay-ree) | 1/1000 of a circle = 0.36 degree |
| Unit of Temperature | |
|---|---|
| Unit | Definition |
| Saden (sah-den) | 1 Saden = 0.5988 °C; 1°C = 1.67 Saden |
| Temperature is measured beginning at 0 saden = absolute zero. It increases at a rate based on the thermal expansion of the element Copper. It is the increase in temperature that results in a coefficient of expansion of 10.0 ppm in pure copper at about 27°C. The Terran value for copper = 16.7 ppm per degree C at about 20°C, from this page. In comparison to the Kelvin scale, 1 Saden = 0.5988°K. The freezing point of pure water at Earth sea level is 0°C or 273.15°K. This would be 456.1605 Saden. |
| Unit of Heat Quantity | |
|---|---|
| Unit | Definition |
| Sadenol (sah-den-awl) | Heat required to raise 1 lara of pure water 1 saden 1 Sadenol = 1.60144 calories = 0.006355 BTU |
| Units of Electrical Measurement | ||
|---|---|---|
| Measured parameter | Unit | Value |
| Electrical charge | Talom (tahl-om) | Equiv to coulomb |
| Voltage | Dani (dah-nee) | Equiv to volt |
| Current | Secri (seh-cree) | Equiv to amp |
| Resistance | Laten (lah-ten) | Equiv to ohm |
| Power | Vittyr (vit-eer) | 1 Dani x 1 Secri |
| Capacitance | Lexa (lex-ah) | Equiv to farad |
| Inductance | Athu (ah-thoo) | Equiv to henry |
| Conductance | Renn (ren) | Equiv to siemens |
| Impedance | Laton (lay-ton) | Equiv to ohm |
| Reactance (cap) | Klaten (clay-ten) | Equiv to ohm |
| Reactance (ind) | Illaten (ill-ay-ten) | Equiv to ohm |
| Frequency | Vibar (vee-bar) | Cycles/virhek = 23.15038 hertz |
| Amplification | Sarren (sah-wren) | 1 sarren = unity gain |
| Sensitivity | Tran | Detection of 1 sidani signal |
© 2008 Robert P. Renaud -- all rights reserved