Betz's law

Etymology
It was published in 1919, by the German physicist Albert Betz.

Proper noun

 * 1) A law describing the maximum power that can be extracted from the wind. It states that no turbine, regardless of its design, can capture more than 16/27 (59.3%) of the kinetic energy in wind.

Related terms

 * Betz's coefficient
 * Betz efficiency
 * Betz limit