From: bangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Thu, 16 Dec 2010 21:42:39 +0000 (+0000)
Subject: Explain what we are seeing.
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28fcde765404d5112c4f0afc74187e3252e80673;p=dealii-svn.git

Explain what we are seeing.


git-svn-id: https://svn.dealii.org/trunk@22985 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/examples/step-38/doc/results.dox b/deal.II/examples/step-38/doc/results.dox
index 5e5bee9ba1..a3eda5aec0 100644
--- a/deal.II/examples/step-38/doc/results.dox
+++ b/deal.II/examples/step-38/doc/results.dox
@@ -20,8 +20,16 @@ H1 error = 0.00552639
 @endverbatim
 
 This is what we expect: make the mesh size smaller by a factor of two and the
-error goes down by a factor of four (***HM, SHOULDN'T IT BE A FACTOR OF
-TWO???***)
+error goes down by a factor of four (remember that we use bi-quadratic
+elements). The full sequence of errors from one to five refinements looks like
+this, neatly following the theoretically predicted pattern:
+@verbatim
+0.360759
+0.0888008
+0.0221245
+0.00552639
+0.0013813
+@endverbatim
 
 Finally, the program produces graphical output that we can visualize. Here is
 a plot of the results: