Here's one for you guys. I've done some research and I couldn't find an exact answer to my question... In the experiment shown here: http://www.itc.csmd.edu/mth/ahouser/PHY1010/labs/Lab10StandingWaves.pdf [Broken] Why is there no standing wave on the segment of the string between the pulley and the mass hanger? I'm guessing it's because the pulley is a fixed node that cannot oscillate? Is there more to it than this?