Watch it once, don’t believe it. Watch it twice, still don’t get it. This Rube Goldberg defies gravity. Sir Isaac Newton is turning in his grave right now. The illusion is created by using magnets and the first part of the device is installed on the roof.
Once the camera turns you will see that the device is on a normal, horizontal table too. This Rube Goldberg device is a first because is seems to defy gravity at first, until you know how it works. Nice to see such inventive uses of magnets.