Chaotic Ray Dynamics in a D-Shaped Cavity (video) Yale University Share Print E-Mail Loading video... Caption This video shows a typical trajectory of an optical ray inside a D-shaped cavity. The associated wave fronts create a complex interference pattern in the cavity. Credit Cao, Hess, et al. 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.