Braking System Diagram (IMAGE) Washington University in St. Louis Caption Even simple diagrams, such as this schematic of the working parts of a brake system, can help students construct a mental framework of how something works, whether that be a mechanical device, as in this example, or a more abstract concept, such as the firings of neurons in a brain network, researchers suggest. Credit Wikipedia / Creative Commons; Public Domain. See <a href="http://commons.wikimedia.org/wiki/File:AirBrake.gif" target="_blank">http://commons.wikimedia.org/wiki/File:AirBrake.gif</a> Usage Restrictions Wikipedia / Creative Commons. See <a href="http://commons.wikimedia.org/wiki/File:AirBrake.gif" target="_blank">http://commons.wikimedia.org/wiki/File:AirBrake.gif</a> 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.