X-Git-Url: https://hackdaworld.org/gitweb/?p=lectures%2Flatex.git;a=blobdiff_plain;f=solid_state_physics%2Ftutorial%2F1_03s.tex;h=ac7a51f47ef1cbe0614a6779110cd5fc9ea03574;hp=dd97aa24a52c8fe678cca15bcc2bf237df9caf0d;hb=183bd2b78445842ee859e2f10f8ab9dc84cf2776;hpb=24a37a3b2c9313eabf336293e51dee6e452af5b0

diff --git a/solid_state_physics/tutorial/1_03s.tex b/solid_state_physics/tutorial/1_03s.tex
index dd97aa2..ac7a51f 100644
--- a/solid_state_physics/tutorial/1_03s.tex
+++ b/solid_state_physics/tutorial/1_03s.tex
@@ -34,7 +34,7 @@
  Prof. B. Stritzker\\
  WS 2007/08\\
  \vspace{8pt}
- {\Large\bf Tutorial 2 - proposed solutions}
+ {\Large\bf Tutorial 3 - proposed solutions}
 \end{center}
 
 \section{Drude theory of metallic conduction}
@@ -71,7 +71,8 @@
         \item $v_{average}=\frac{1}{t_0}\int_{0}^{t_0} v(t) dt
 	                  =-\frac{eE}{m}\frac{1}{t_0}[\frac{t^2}{2}]_{0}^{t_0}
 			  =-\frac{eE}{m}\frac{t_0}{2}=:-\frac{eE}{m}\tau$,
-              $\qquad t_0=2\tau$
+              $\qquad t_0=2\tau$, $v_{drift}=2v_{average}$
+	      \includegraphics[width=12cm]{drude_v.eps}
 	\item Each of the $n$ electrons per unit volume
 	      transfer the kinetic energy $\frac{1}{2}mv^2_{drift}$
 	      once per $t_0$ to the lattice