[Figure1] (IMAGE) National Research Council of Science & Technology Caption Positive charges distributed in the air are concentrated near the conventional air-termination, so positive polarity lightning of the same polarity avoids the positive charges and possibly strike the side of the wind blade that is relatively negatively charged. Credit Korea Electrotechnology Research Institute(KERI) Usage Restrictions The sources of photos and research results from KERI must be specified. License Original 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.