% Author: Prof. Dr. Matthias Jung, DL9MJ
% Year: 2024
\begin{tikzpicture}[isometric view]
    \draw[ultra thick] (0,0,0) to [short, i={$I$}] (5,0,0);
    % Der Befehl: [x={(0,0,1)}] legt fest dass die neue X-Koordiante Z ist.
    \foreach \i in {1,...,4} {
        \draw[DARCgreen] (\i,0,0) [x={(0,0,1)}] circle (1);
        \draw[DARCgreen] (\i,0.707,0.707) [x={(0,0,1)}] node[inputarrow, DARCgreen, rotate=45](){};
    }
    \draw[DARCgreen] (2,0.707,0.707) [x={(0,0,1)}] node[anchor=south east](){H};
\end{tikzpicture}