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 -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
