Units??

[Mikkel L. Ellertson]

Anne Wilson wrote:
> On Saturday 02 December 2006 21:56, Aaron Konstam wrote:
>> Section form man usits:
>> INTERACTING WITH ‘UNITS’
>>        To invoke units for interactive use, type ‘units’ at your shell
>> prompt.
>>        The program will print something like this:
>>
>>            2131 units, 53 prefixes, 24 nonlinear units
>>
> I presume that they are the units of measurement, including 24 nonlinear 
> units, though I'm not so sure about the prefixes.
> 
> Amme
> 
Prefixes are defined separately from base units. In order to get
centimeters, the units database defines centi- and c- as prefixes.
Prefixes can appear alone with no unit following them. An exponent
applies only to the immediately preceding unit and its prefix so
that cm^3 or centimeter^3 refer to cubic centimeters but
centi*meter^3 refers to hundredths of cubic meters. Only one prefix
is permitted per unit, so micromicrofarad will fail, but
micro*microfarad will work, as will micro microfarad..

Mikkel
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