Did you know

when on Sonic Riders Knuckles ask Tails how do the Air Gear float

and Tails Mentions Kutta–Joukowski theorem, that is an actual and real fundamental teorem for Aerodynamics!

“can be used for the calculation of the lift of an airfoil, or of any two-dimensional bodies including circular cylinders, translating in a uniform fluid at a constant speed large enough so that the flow seen in the body-fixed frame is steady and unseparated.”<from wikipedia


DEFYING THE NAZIS: THE SHARPS’ WAR, co-directed by Ken Burns and Artemis Joukowsky, is about a little-known but important mission by an American minister and his wife to rescue refugees and dissidents in Europe before and after the start of World War II.

Airs September 20 at 9 p.m. ET on PBS.