[Yt-svn] yt-commit r1642 - trunk/yt

[dcollins at wrangler.dreamhost.com]

Author: dcollins
Date: Thu Feb 25 12:58:51 2010
New Revision: 1642
URL: http://yt.enzotools.org/changeset/1642

Log:
Changed unit conversion pattern to A_per_B

Modified:
   trunk/yt/physical_constants.py

Modified: trunk/yt/physical_constants.py
==============================================================================
--- trunk/yt/physical_constants.py	(original)
+++ trunk/yt/physical_constants.py	Thu Feb 25 12:58:51 2010
@@ -22,17 +22,23 @@
 mass_mean_atomic_cosmology = 1.22
 mass_mean_atomic_galactic = 2.3
 
-# Conversion Factors
+# Conversion Factors:  X au * mpc_per_au = Y au
 # length
-mpc_in_mpc = 1
-mpc_in_kpc = 1e3
-mpc_in_pc  = 1e6
-mpc_in_au  = 2.063e11
-mpc_in_rsun =4.43664e13
-mpc_in_miles =1.917e19
-mpc_in_cm  = 3.0857e24
-
+mpc_per_mpc   = 1
+mpc_per_kpc   = 1e-3
+mpc_per_pc    = 1e-6
+mpc_per_au    = 4.847e-12
+mpc_per_rsun  = 2.253e-14
+mpc_per_miles = 5.216e-20
+mpc_per_cm    = 3.24e-25
+km_per_pc     = 3.24e-14
+m_per_fpc     = 0.0324077649
 
+au_per_mpc    = 2.063e11
+rsun_per_mpc  = 4.43664e13
+miles_per_mpc = 1.917e19
+cm_per_mpc    = 3.0857e24
+pc_per_km     = 1.3806504e13
 #Short cuts
 G = gravitational_constant_cgs
 me = mass_electron_cgs