Albert Betz was a German physicist and engineer, best known for his work in aerodynamics and wind energy. He is most famous for formulating the Betz Limit, which defines the maximum theoretical efficiency of a wind turbine. This limit states that no wind turbine can capture more than 59.3% of the kinetic energy in wind. Born in 1885, Betz made significant contributions to the understanding of fluid dynamics. His research laid the groundwork for modern wind turbine design and has had a lasting impact on the field of renewable energy. Betz passed away in 1968, but his legacy continues to influence energy technology today.