calibcant/discussion.tex: Finish error propogation paragraph

Replace "TODO" with "kappa shouldn't change", since I go right into
quoting numbers later on.

diff --git a/src/calibcant/discussion.tex b/src/calibcant/discussion.tex
index 954c89577bb29b645a15c60b737946249e528a26..6f1eb2310a331c368562eae905675c8c2e94fd79 100644 (file)
--- a/src/calibcant/discussion.tex
+++ b/src/calibcant/discussion.tex
@@ -78,7 +78,8 @@ uncertainty in each parameter (\cref{fig:calibcant:statistics}).
 Values for $\sigma_p$ and $\avg{V_p^2}$ are quite sensitive to the
 location of the laser spot on the cantilever, so they can vary over
 large time scales as the microscope alignment drifts (e.g.~due to
-thermal expansion as the room warms up).  However TODO
+thermal expansion as the room warms up).  However, the calculated
+value for $\kappa$ should not vary significantly.
 
 For example, on a recent calibration run\footnote{2013-02-07T08-20-46}
 I measured $\sigma_p=35.68\pm0.87\U{V/$\mu$m}$,