Levitation: Pyrolytic Graphite and Neodymium Magnets.
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Pyrolytic carbon is similar to regular graphite, but forms in stacked sheets rather than randomly orientated molecules. Because of the layering, pyrolytic carbon, commonly called pyrolytic graphite, exhibits a number of interesting properties, including the ability to levitate on a sufficiently strong magnetic field.
Neodymium magnets are the most widely used rare earth magnets, and are made from an alloy of neodymium, iron, and boron, in the ratio of Nd2Fe14B. Neodymium magnets are the strongest of any permanant magnets, and there are different grades, or levels of purity available. N30-N40 grade magnets are very strong but are considered "general purpose" as far as neodymium magnets go. Grades such as N50 and N52 are extremely strong, so strong that care must be taken when handling them, allowing them to snap together from only a few inches apart can cause them to shatter, and send shards flying off at high speed.
When neodymium magnets are combined to form arrays, some very interesting effects can be created.
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Oh I knew that leds from mechanical pencil had some magnetic properties, but I don't have such a stromg magnet. I just bought another magnet so I'll try to replicate your experiment.
rey2best 9 months ago
@rey2best try some of the .5mm graphite, the only stuff I had on hand was .7mm and just a little to heavy to levitate. Have fun!
madsciencetv 9 months ago