85 (IMAGE) University of Vienna Caption Screw of light on the 143 km long way between the canary islands of La Palma and Tenerife. Credit Copyright: University Vienna Usage Restrictions The image may only be used with appropriate caption or credit. 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.