Clinging Quarter (image) University of California - Berkeley Caption Quarter clinging to a steeply inclined glass slide. The glass slide is inclined 80 degrees from horizontal. The contacting side of the quarter is covered by a sheet of the micro fiber array. No adhesive is used to keep quarter from sliding. Credit (Photo courtesy of the Fearing Group, UC Berkeley) Usage Restrictions None 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.