Flux original is a science-based design toy that makes you experience the sensation of anti-gravity. Drop the heavy metal ball in the copper tube and witness the magic of the ball descending slowly and weightlessly in the hole. Feel Flux is based on a rarely known rule of magneto-dynamics called Lenz’s law. The ball is a very strong magnet that induces electrical current in the tube when moving. this current generates the magnetic field that slows down the ball and makes Feel Flux come alive.