--- loncom/homework/capa.units	2006/11/20 20:38:59	1.15
+++ loncom/homework/capa.units	2008/03/06 01:54:16	1.16
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Physical Unit definitions
 #
-# $Id: capa.units,v 1.15 2006/11/20 20:38:59 albertel Exp $
+# $Id: capa.units,v 1.16 2008/03/06 01:54:16 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -135,4 +135,11 @@ farenheight     degF   .5555555555 K # m
 molarity        M      mol/L         # chemisty
 amu             amu    1.66053873e-27 kg # atomic mass unit
 amu             u      1.66053873e-27 kg # atomic mass unit
-
+lightspeed      c      299792458 m/s     # speed of light
+cubiccentimeter cc     cm^3              # cubic centimeter
+electroncharge  e      1.6021892E-19 C   # elementary charge
+hbar            hbar   1.05457148E-34 m^2*kg/s # Planck constant
+milesperhour    mph    0.44704 m/s   # miles per hour
+rpm             rpm    0.0166666667/s  # rounds per minute
+rpm             rpms   0.0166666667/s  # rounds per minute
+parsec          pc     3.08568025E16 m   # parsec