Blade Tip (IMAGE) University of Washington Caption Model results of the water speed around a turbine blade. Currents are slower (blue) behind the blade, and faster (red) at the blade's tip. Credit University of Washington Usage Restrictions With 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.