1""" 2""" 3from __future__ import absolute_import 4 5from ..unitquantity import UnitQuantity 6from .length import m, rod 7 8are = ares = UnitQuantity( 9 'are', 10 100*m**2, 11 aliases=['ares'] 12) 13b = barn = UnitQuantity( 14 'barn', 15 1e-28*m**2, 16 symbol='b', 17 aliases=['barnes'] 18) 19cmil = circular_mil = UnitQuantity( 20 'circular_mil', 21 5.067075e-10*m**2, 22 symbol='cmil', 23 aliases=['circular_mils'], 24 doc='conversions approximate, area of a circle with diameter=1 mil' 25) 26D = darcy = UnitQuantity( 27 'darcy', 28 9.869233e-13*m**2, 29 symbol='D' 30) 31mD = millidarcy = UnitQuantity( 32 'millidarcy', 33 D/1000, 34 symbol='mD' 35) 36ha = hectare = UnitQuantity( 37 'hectare', 38 10000*m**2, 39 symbol='ha', 40 aliases=['hectares'] 41) 42acre = international_acre = UnitQuantity( 43 'acre', 44 4046.8564224*m**2, 45 aliases=['acres', 'international_acre', 'international_acres'], 46 doc="exact. http://en.wikipedia.org/wiki/Acre" 47) 48US_survey_acre = UnitQuantity( 49 'US_survey_acre', 50 160*rod**2, 51 aliases=['US_survey_acres'], 52) 53 54del UnitQuantity, m, rod 55