These movies were made with the Flotek 1440 wind tunnel in RIT's Department of Manufacturing and Mechanical Engineering Technology. They show air moving past an airfoil. Small (approx. 2-3 mm diameter) bubbles are in the air. They are neutrally buoyant, so their motion corresponds closely to the motion of the air around them. The movies were made at 500 frames/second with a shutter speed of 1990 microseconds. Each bubble appears as a short streak, and the length of the streak indicates how far the bubble moved in 1990 microseconds. By analyzing a movie in LoggerPro, it is possible to superimpose measured velocity vectors on the movie. The result for 10.mp4 is shown in LP_Wind_Tunnel_10.mp4.