# CONSTANTS

You will note that my superscript has got lost. I'll repair the data asap, for now the E notation looks best on data and you need to read m3 as metre cubed etc. etc.

• pi = 3.1416
• e = 2.718
• g = gravitational acceleration conversion factor = 32.1739 ft.lb/(Ibf.s²)
• = 4.1697 x 108 ft.lb/(Ibf.h²)
• = 1 g.cm/(dyn.s²)
• (Earth surface 981 cm/s² at 50° Latitude ) = 1 kg.m/(N.s²)
• = 1 lb.ft/(pdl.s²)
• = 1 slug.ft/(Ibf.s²)
• J = mechanical equivalent of heat = 778.16 ft.lbf/Btu
• = 4.2 J/cal
• R = gas constant = 1544 ft.lbf/(Ib.mol. °R)
• = 0.730 ft3 . atm/(Ib . mol. °R)
• = 0.08205 m3 .atm/(kg. mol. K)
• = 8.314 J/(g . mol. K)
• = 8.314 N . m/(g . mol. K)
• = 8314 N . m/(kg . mol . K)
• = 1.987 cal/(g. mol. K)
• Stefan-Boltzmann constant = 0.1714 x 10-8 Btu/(h.ft² .°R 4)
• = 5.6697 x 10E-8 W/(m² . K4)
• Avogadro's Number = 6.02257 x 10E23 atom per gmol
• Speed of light = 2.997925 x 10E10 cm/s
• Planck's constant = 6.62554 x 10E-27 erg.s
• Boltzmann's constant = 1.3805 x 10E-23 J/°C
• Permeability of space = 4 PI E-7 henry/metre
• Permittivity of space = (1E-9)/(36PI) farad/metre