Albert Betz

Albert Betz (25 December 1885 – 16 April 1968) was a German physicist and a pioneer of wind turbine technology.

In 1911 Betz became a researcher at the University of Göttingen aerodynamics laboratory, where he was awarded his PhD in 1919 for his work on 'ship propellers with minimum loss of energy'.

His work was based on earlier studies by Frederick Lanchester that included the first full description of lift and drag.

In 1936 he succeeded Ludwig Prandtl as director of the Aerodynamische Versuchsanstalt (AVA, aerodynamics laboratory), a position he held until 1956.

Betz received the Ludwig-Prandtl-Ring from the Deutsche Gesellschaft für Luft- und Raumfahrt (German Society for Aeronautics and Astronautics) for "outstanding contribution in the field of aerospace engineering" in 1958.

Simple proof of Betz' law