units_imperial1 http://www.openmath.org/cd/units_imperial1.ocd 2006-08-27 experimental 2004-08-27 3 0 This CD defines symbols to represent imperial standard measures. foot This symbol represents the measure of one foot. This is the standard imperial measure for distance. 1 foot = 0.3048 metres 1 yard This symbol represents the measure of one yard. This is a standard imperial measure for distance, defined in terms of the foot. 1 yard = 3 feet 1 3 mile This symbol represents the measure of one (land, or statute) mile. This is a standard imperial measure for distance, defined in terms of the foot. 1 mile = 5280 feet 1 5280 acre This symbol represents the measure of one acre. This is a standard imperial measure for area. 1 acre = 4840 square yards 1 4840 pint This symbol represents the measure of one (imperial) pint. This is the standard imperial measure for volume. See units_us1 for the U.S. pint. 1 pint = 0.568 litres 1 miles_per_hr This symbol represents the measure of one mile per hour. This is a standard imperial measure for speed. 1 miles_per_hr = 1 mile in 1 hour miles_per_hr_sqrd This symbol represents the measure of one mile per hour squared. This is a standard imperial measure for acceleration. 1 miles_per_hr_sqrd = 1 mile_per_hr (change) in 1 hour pound_mass This symbol represents the measure of the mass which weighs one pound under the influence of standard gravity. 1 pound = 0.45359237 kilograms 1 pound_force This symbol represents the measure of force of one pound. 1 pound force = 4.44822 Newtons 1 degree_Fahrenheit This symbol represents the measure of one degree Fahrenheit. This is the standard imperial measure for temperature. 1 degree Fahrenheit = 0.5556*(1-32) degrees Celsius 1 32 bar This symbol represents the measure of one bar. This is the standard imperial measure for pressure. 1 bar = 100 000 Pascals 1 100000