This Rube Goldberg machine is powered by light

It's always fun to see the chain reaction of Rube Goldberg machines and how one action can cascade into a whole bunch of things happening. This one, from an ad for Japanese technology company au, is particularly cool because it's just powered by light and lens and optics.

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Captain Cupholder

I'm a sucker for Rube Goldberg machines, so I loved it, but I would have given it a truckload of internets if it ended with the disco ball <3