Title: Flapping flag in a flowing soap film
Description: A little flag flaps at approximately 34Hz in a downwards flowing soap film (not shown). 25 previous frames follow the flag as "ghosts".
Credits: Teis Schnipper (Department of Physics and Center for Fluid Dynamics, Technical University of Denmark) and Jun Zhang (Department of Physics and Applied Mathematics Laboratory, Courant Institute of Mathematical Sciences, New York University).
Jun Zhang, Stephen Childress, Albert Libchaber, and Michael Shelley
Contributed By: Teis Schnipper