A brass weight is dropped through an aluminum tube. It rockets through, falling into the spectator's hand. So far, so good. But, at the magician's command, the weight drops through the tube in slow motion - like an astronaut bounding across the moon! The weight can be clearly seen floating through the tube!
Furthermore, the brass weight can be seen floating through the holes in the tube!
Newton's Nightmare is a delight to perform, and easy enough for any aspiring sorcerer - or scientist - to master.