MRI Experiment (IMAGE) DOE/Princeton Plasma Physics Laboratory Caption This is a water-filled version of MRI experiment showing transparent outer cylinder and blackened inner cylinder. Red lasers enter at bottom to measure the local speed of the water. Credit Eric Edlund and Elle Starkman 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.