Operator` is The dimensional quantity operator. load(ezunits) enables this operator. Conversions for products, quotients, and powers of units are derived from the set of known unit conversions. km = 1000*m cm = m/100 mm = m/1000 micrometer = m/1000000 micron = micrometer inch = feet/12 feet = 381*m/1250 ft = feet Mg = 1000*kg metric_ton = Mg g = kg/1000 microgram = kg/1000000000 pound_mass = 200*kg/441 ounce = pound_mass/16 oz = ounce
Example:
(%i) load(ezunits); (%i) (((1/2) ` inch) `` mm), numer; (%o) 12.7 ` mm