Experimental setup for testing columns. (IMAGE) Tokyo Metropolitan University Caption (a) Schematic of setup used to test the strength of columns. (b) Stress in the column versus the proportion by which it is deformed. Alpha is the proportion of sticky grains. (c) Young’s modulus (stiffness) of columns with different proportions of sticky grains. Credit Tokyo Metropolitan University Usage Restrictions Credit must be given to the creator. License CC BY 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.