(IMAGE) Champalimaud Centre for the Unknown Caption Time holds the key to the explanation of Weber's law. Credit Diogo Matias, Champalimaud Foundation Usage Restrictions the image may only be used with appropriate 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.