Letter Patterns (image) DOE/Lawrence Berkeley National Laboratory Share Print E-Mail Caption Letters are encoded onto independent channels, with the amplitudes and phases forming different patterns. Credit Chengzhi Shi/Berkeley Lab and UC Berkeley Usage Restrictions Editorial use only. 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.