Irina's edits

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+\documentclass[./manual.tex]{subfiles}
+\begin{document}
+
+\chapter*{Electron Diffraction - Pre-lab exercise}
+
+\textbf{Electron diffraction lab is relatively simple as the measurements go, but its data analysis part is more substantial than others.}
+
+\section*{1. Theoretical graph}
+
+    Prepare a theoretical plot of Eq.(1.5) 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.
+
+
+
+\end{document}
+