Floating tables are quite awesome, especially with an illusion effect. They look crazy because, at first glance, it seems like the table is standing up on nothing, more or less levitating in space but a closer look is on strings instead of on solid legs. Which is impossible, seems impossible, sounds impossible, and looks damn outright impossible, right?
There is nothing magical about it, it’s just plain physics. A floating table is an example of a tensegrity system.
