Mercury Wave Machine
Here’s one of the more satisfying physics demonstrations we’ve seen. Marcel Clemens rigged up vials filled with different amounts of mercury and connected them to a frame with springs. Released at the same moment, they create a smooth wave pattern that gradually morphs into other patterns. He also created a setup where each vial plays

Here’s one of the more satisfying physics demonstrations we’ve seen. Marcel Clemens rigged up vials filled with different amounts of mercury and connected them to a frame with springs. Released at the same moment, they create a smooth wave pattern that gradually morphs into other patterns. He also created a setup where each vial plays a musical note.