From 35caa2f753709ae25e4c076460c65b67dff33847 Mon Sep 17 00:00:00 2001
From: "Eugeniy E. Mikhailov" <evgmik@gmail.com>
Date: Tue, 29 Sep 2020 23:20:59 -0400
Subject: added Irina's changes for prelab

---
 ediffract_prelab.tex | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'ediffract_prelab.tex')

diff --git a/ediffract_prelab.tex b/ediffract_prelab.tex
index acf2e12..8fb9b45 100644
--- a/ediffract_prelab.tex
+++ b/ediffract_prelab.tex
@@ -3,14 +3,14 @@
 
 \chapter*{Electron Diffraction - Pre-lab exercise}
 
-You can use the lab report template to prepare the submission of the pre-lab exercises. In fact, they will be a part of your final report.
+You can use the lab report template to prepare the submission of the pre-lab exercises. Feel free to use calculations or graphs in your final report, but you don't need to include prelab with the report.
 
 \section*{1. Theoretical graph}
 
     Prepare a theoretical plot of Eq.(5) from the manual, using known values of the parameters and making reasonable guess on the range of the expected angles $\theta$.
 
 \section*{2. Error propagation}
-How you can find the uncertainty of $\sin(\theta)$ from the instrumental uncertainty of $s$? Discuss if the trigonometrical functions can be simplified.
+How you can find the uncertainty of $\Delta \sin(\theta)$ from the instrumental uncertainty the arc measurements $\Delta s$? 
 
 
 
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