Units

A description of the standardized measurementincrements in which a value is specified. The description is represented asa mathematical phrase. Units should be represented by widely acceptedrepresentation. For example, units should conform to the InternationalSystem of Units (SI) which is maintained by BIPM (Bureau International desPoids et Mesures (see http://www.bipm.fr/ ) when appropriate or usetokens like "Re" to represent units of the Radius of the Earth. Within aphrase the circumflex (^) is used to indicate a power, a star (*) is used toindicate multiplication and a slash (/) division. When symbols are notseparated by a mathematical operator, multiplication is assumed. Symbols forbase units can be found at:http://www.bipm.fr/en/si/si_brochure/chapter2/2-1/#symbols and thosefor common derived units can be found at:http://www.bipm.fr/en/si/derived_units/2-2-2.html