''' Physical Constants.

Matt Vernacchia
proptools
2016 Apr 15
'''

# Universal gas constant [units: joule kelvin**-1 mole**-1].
R_univ = 8.314

# Acceleration due to gravity at Earth's surface [units; meter second**-2]
g = 9.81

@@ -222,8 +222,56 @@
  = 9.81%0A
+%0A# Standard temperature %5Bkelvin%5D%0AT_stp = 273.15%0A

Add T_stp = 273.15 K to constants.