 His name is notably associated with the Warburg element of electrochemistry.Among his students were James Franck (Nobel Prize in Physics, 1925), Eduard Grüneisen, Robert Pohl, Erich Regener and Hans von Euler-Chelpin (Nobel Prize in Chemistry, 1929).He carried out research in the areas of kinetic theory of gases, electrical conductivity, gas discharges, heat radiation, ferromagnetism and photochemistry.