Robotic bee for aeronautics research. The apparatus consists of an artificial wing (grey, centre) suspended in a tank of paraffin oil. As the wing flaps in the viscous fluid, it produces turbulence. This is seen by the movement of air bubbles (green) illuminated by a pulsed laser light. Understanding the way in which insect wings work may help in the design of aircraft wings. Photographed at the University of Ulm, Germany.
Model release not available. Property release not required.