Two New Magnetic Toys

Firstly, we have an example of diamagnetic levitation. Diamagnetic materials are repelled by both the north and the south pole of a regular magnet. However the effect is a very weak one. Water is diamagnetic, and also a substance called pyrolytic graphite, which we show here. With a small2 x 2 array of powerful neodymium magnets, it is possible to levitate a small piece of pyrolytic graphite. However this is a variant of that, and it involves an array of neodymium magnets, with small pieces of pyrolytic gr