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Another example of diamagnetic levitation. This time the magnets are static, and it is the diamagnetic material which floats in the air!The floating square is pyrolytic graphite, which is extremely diamagnetic. It is made by a process called vapour deposition, where methane gas is heated to a very high temperature, and very slowly a layer of pyrolytic graphite forms on the side of the vessel. In effect it is a single crystal of graphite, and because the resulting graphite is very highly ordered, pyrolytic graphite is extremely diamagnetic. Also the density of pyrolytic graphite is fairly low. The combination of these two factors - the low density and the strong diamagnetic effect - makes this amazing demonstration possible.Neodymium super magnets are extremely powerful magnets, and will repel a piece of diamagnetic material. And when it is as light as pyrolytic graphite, we have the possibility of levitation!However if we only use a single magnet and try and suspend our diamagnetic material in mid air, we will fail, and it will simply slide off the magnet. The arrangement we have here uses four 12mm neodymium magnets, with alternate north and south poles pointing upwards. In effect the pyrolytic graphite becomes trapped between the four poles, and so floats above our magnets indefinitely!The four magnets are fastened to the base plate, and we also supply a small strip of magnetic plastic that will keep the pyrolytic graphite in place so you can carry it around. The whole arrangement fits into a wooden base, and is held in magnetically!Watch the video...Write a review about: Diamagnetic Levitation 2Ask a question about: Diamagnetic Levitation 2People who bought this item also bought:
