From c0b133e53f58bbc66371b2d7e7d65d2ef4f58197 Mon Sep 17 00:00:00 2001 From: bmundim Date: Mon, 7 May 2012 05:53:46 +0000 Subject: Documentation: fix conversion factor for SI units. Add Gaussian one. git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinBase/HydroBase/trunk@49 57fe0bb3-ccba-405f-9b23-de0201f165b7 --- doc/documentation.tex | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/doc/documentation.tex b/doc/documentation.tex index 51826e5..8ba001d 100644 --- a/doc/documentation.tex +++ b/doc/documentation.tex @@ -210,7 +210,9 @@ magnetic field: \\{} [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 @@ we find the following conversion factors: \\{} [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, $1\,\mathrm{Tesla} = 10^4\,\mathrm{Gauss}$. -- cgit v1.2.3