Amazing bead chain experiment in slow motion - Slo Mo #19 - Earth Unplugged

The beaded polymer chain demonstration - from Educational Innovations - is one of our go-to demonstrations in the summer, year one workshops. In all honesty, though, I think it's a better demonstration of kinetic and potential energy, momentum, and acceleration.

Sure, it's a long chain, and so are most polymers, but if that's all we're showing, then we wouldn't need the mug or the running of the chain out from that mug.