Ratios of Power Outputs (IMAGE) Science China Press Caption This image shows the ratios of power outputs for the downstream turbine in counter-rotating to those in co-rotating as a function of the spacing between the turbines. Credit ©Science China Press Usage Restrictions None 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.