Lightning Detector (IMAGE) University of Washington Caption Robert Holzworth stands with a test lightning sensor on the roof of a UW building. The pipe contains an antenna that detects the electrical frequencies generated by lightning. Seattle's actual detector is on the roof of a neighboring building. Credit Dennis Wise/University of Washington Usage Restrictions With 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.