Feddersen studied
chemistry and
physics at the
University of Göttingen, where he became member of
Burschenschaft Hannovera (fraternity) and lived from 1858 as a private scholar in Leipzig. In 1859 he succeeded in experiments with the Leyden jar to prove that every single
electric spark discharge composed of (damped) oscillations. He realized that the arise from a
coil, capacitor and resistor existing electrical circuit oscillations. Thus he became the co-founder of
wireless technology. Feddersen was co-editor of the Biographical Dictionary and literary and on the history of exact sciences. He was a member of the
Saxon Society of Sciences. ==Works==