Erosion Has a Point -- and an Edge, NYU Researchers Find (image) New York University Share Print E-Mail Caption Erosion caused by flowing water does not only smooth out objects, but can also form distinct shapes with sharp points and edges, a team of NYU researchers has found. Their experiments showed water flow acts as a shearing force against objects, working them into specific shapes. The above illustrates how a cylinder, over time, was sculpted into a triangular shape. Credit New York University Usage Restrictions None Share Print E-Mail 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.