Da Vinci Experiment (IMAGE) American Institute of Physics Caption Persson's team turned to a basic set-up originally devised by the 15th-century Renaissance artist Leonardo da Vinci to measure the friction for rubber sliding across asphalt. Credit Bo Persson, FZ Jülich Usage Restrictions This image may only be used with proper caption and 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.