Prandtl's famous lecture with the title "Uber Flussigkeitsbewegung bei sehr kleiner Reibung" was presented on August 12, 1904 at the Third Internationalen Mathematischen Kongress in Heidelberg, Germany. This lecture invented the phrase "Boundary Layer" (Grenzschicht). The paper was written during Prandtl's first academic position at the University of Hanover. The reception of the academic world to this remarkable paper was at first lukewarm. But Felix Klein, the famous mathematician in Gottingen, immediately realized the importance of Prandtl's idea and offered him an academic position in...