Air Waveguide (image) University of Maryland Share Print E-Mail Caption This is an illustration of an air waveguide. The filaments leave 'holes' in the air (red rods) that reflect light. Light (arrows) passing between these holes stays focused and intense. Credit Howard Milchberg 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.