[Commits] [svn:einsteintoolkit] HydroBase/trunk/doc/ (Rev. 49)

[bcmsma at astro.rit.edu]

User: bmundim
Date: 2012/05/07 12:53 AM

Modified:
 /trunk/doc/
  documentation.tex

Log:
 Documentation: fix conversion factor for SI units. Add Gaussian one.

File Changes:

Directory: /trunk/doc/
======================

File [modified]: documentation.tex
Delta lines: +9 -3
===================================================================
--- trunk/doc/documentation.tex	2012-03-13 17:09:43 UTC (rev 48)
+++ trunk/doc/documentation.tex	2012-05-07 05:53:46 UTC (rev 49)
@@ -210,7 +210,9 @@
   \\{}
   [T] & = & [L]\; / c
   \\{}
-  [B] & = & 1/[L]\; / \sqrt{\epsilon_0 G / c^2}
+  [B] & = & 1/[L]\; / \sqrt{\epsilon_0 G / c^2} \qquad (\mathrm{SI})
+  \\{}
+  [B] & = & c^2/[L]\; / \sqrt{G} \qquad \qquad (\mathrm{Gaussian})
 \end{eqnarray}
 
 Inserting the SI units into the above unit correspondences, 
@@ -220,10 +222,14 @@
   \\{}
   [T] & = & 1\, M_{\mathrm{sun}} \equiv 4.92673\, \mathrm{\mu s}
   \\{}
-  [B] & = & 1\, \sqrt{\mu_0} /M_{\mathrm{sun}} \equiv 8.344956\cdot 10^{15}\, \mathrm{T}, 
+  [B] & = & 1\, \sqrt{\mu_0/4\pi} /M_{\mathrm{sun}} \equiv 2.355368\cdot 
+            10^{15}\, \mathrm{T},  \qquad (\mathrm{SI})
+  \\{}
+  [B] & = & 1\, M^{-1}_{\mathrm{sun}} \equiv 7.448329\cdot 10^{18}\, \mathrm{G}, 
+            \qquad \qquad \qquad (\mathrm{Gaussian})
 \end{eqnarray}
 where T (Tesla) is the magnetic field unit in SI, 
-$1\,\mathrm{T}=1\,\mathrm{N/(A\cdot m)}$, or in its cgs equivalent,
+$1\,\mathrm{T}=1\,\mathrm{N/(A\cdot m)}$, and G (Gauss) is its cgs equivalent,
 $1\,\mathrm{Tesla} = 10^4\,\mathrm{Gauss}$.