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The Derived System of Units (DSU) is a standard system of units derived from the Basilican System of Units.

UnitsEdit

DSU base units
Quantity Symbol Unit name SI BSU HCM
length dul derived unit of length = 1.6162 m = 1 × 10−65 SDU ≈ 3.7989 nanopar
mass dum derived unit of mass = 2.176 kg = 1 × 100 SMU ≈ 1.2899 × 1013 el
time dut derived unit of time = 0.53910629 s = 1 × 10−2 STU ≈ 0.0063315 GI
temperature dutr derived unit of temperature = 1.417 K = 1 × 10−1 STE ≈ 1.8157 kin

PrefixesEdit

Prefixes for the Derived System of Units
Multiples Name deca- hecto- kilo- mega- giga- tera- peta- exa- zetta- yotta-
Symbol da h k M G T P E Z Y
Factor 100 101 102 103 106 109 1012 1015 1018 1021 1024
Fractions Name deci- centi- milli- micro- nano- pico- femto- atto- zepto- yocto-
Symbol d c m μ n p f a z y
Factor 100 10−1 10−2 10−3 10−6 10−9 10−12 10−15 10−18 10−21 10−24

Common unitsEdit

In common parlance, some powers of 10 of DSU base units have specific names. Of these, ds, dmin, dh, and dls are most commonly used. dy and dly are also used, but may be substituted by other units of similar magnitude. The derived week and derived month are not as commonly used and have no corresponding symbol.

Common units
Name Symbol Quantity Expression in terms of DSU base units SI derived unit
kilodul kdul length = 1 × 103 dul
centidul cdul length = 1 × 10−2 dul
millidul mdul length = 1 × 10−3 dul
microdul μdul length = 1 × 10−6 dul
nanodul ndul length = 1 × 10−9 dul
square kilodul kdul2 area = (1 × 103 dul)2
square hectodul hdul2 area = (1 × 102 dul)2
derived unit of area dua area = (1 × 100 dul)2
derived unit of volume duv volume = (1 × 100 dul)3
derived unit of density dud density = 1 dum × (1 dul)−3
millidum mdum mass = 1 × 10−3 dum
microdum μdum mass = 1 × 10−6 dum
derived second ds time = 1 × 100 dut ≈ .53910629 s
derived minute dmin time = 1 × 102 dut ≈ 0.8985105 min
derived hour dh time = 1 × 104 dut ≈ 1.4975175 h
derived day dd time = 1 × 105 dut ≈ 0.6239656 d
derived week time = 1 × 106 dut ≈ 0.8913794 week
derived month time = 1 × 107 dut
derived year da, dy time = 1 × 108 dut ≈ 1.7083598 a (Gregorian)
≈ 623.9656134259 d
derived light-second dls length c⋅dut ≈ 0.53910629 ls
derived light-year dly length c⋅dut × 108 ≈ 1.7083247 ly (Julian)

CalendarEdit

The calendar system used in DSU is called Derived Time (DT). The format for DT is YYYYY-MM-DDD h:mm:ss. The beginning of year 0 is calibrated to the beginning of year 0 in GST.

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