\Section[
    \eng{Constants}
    \ger{Konstanten}
]{constants}
    \begin{constant}{planck}{h}{def}
        \desc{Planck Constant}{}{}
        \desc[german]{Plancksches Wirkumsquantum}{}{}
        \val{6.62607015\cdot 10^{-34}}{\joule\s}
        \val{4.135667969\dots\cdot 10^{-15}}{\eV\s}
    \end{constant}
