Georg Duffing

Georg Wilhelm Christian Caspar Duffing (April 11, 1861 in Waldshut – April 5, 1944 in Schwedt/Oder) was a German engineer and inventor. In 1918, he described vibrations and their resonances mathematically, as the Duffing equation. Georg Duffing's equation for vibration theory is a standard model for nonlinear vibration. Since the 1970s, it has been popular in chaos theory. Provided by Wikipedia