\chapter*{Formelverzeichnis}
\addcontentsline{toc}{section}{Formelverzeichnis}

\begin{longtable}[l]{>{$}p{1.6cm}<{$}>{\centering$}p{1.7cm}<{$}p{4cm}}
	\textbf{Symbol} & \textbf{Einheit} & \textbf{Bedeutung} \\[3ex]
	\endfirsthead
	\textbf{Symbol} & \textbf{Einheit} & \textbf{Bedeutung} \\[3ex]
	\endhead
	\alpha & ^\circ & Winkel \\ [2mm]
    x & mm & Koordinate \\ [2mm]
\end{longtable}
\clearpage

%__________________________
% Erklärung zu den longtables:
% \begin{longtable}[l]{>{$}p{1.6cm}<{$} >{\centering$}p{1.7cm}<{$} p{4cm}}
% >{pre} : this command is set before every item in that column
% <{after} : this command is set after every item in that column
% here: pre and after are "$", to make the math modus active in the whole column



