Overlaid Waveforms (IMAGE) University of Cambridge Caption The background is the instantaneous fluid velocity field of one flagellum, color-coded by magnitude, with overlaid arrows showing flow direction. Credit Image courtesy of D.R. Brumley, K.Y. Wan, M. Polin, and R.E. Goldstein, University of Cambridge. Usage Restrictions Please credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.