Caustics (image) Ecole Polytechnique Fédérale de Lausanne Share Print E-Mail Caption Researchers at EPFL found a way to control "caustics", patterns that appear when light hits a water surface or a transparent material. Thanks to an algorithm, they can shape a transparent object so that it reflects a coherent image. Credit (c) Alain Herzog Usage Restrictions None Share Print E-Mail 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.