Super Cool Magnet
I am doing an experiment about magnets and I need some information on
the super cool magnet do you have any?
Do you mean a superconducting magnet? A superconductor conducts
electricity with no resistance, meaning a superconducting device
in your home would not add to your electricity bill (except through
the other equipment you might need to use it) - superconducting
magnets have a few problems however - right now the only good ones
work at very low temperatures (only a few degrees above absolute
zero). New materials were discovered above 6 years ago that might
work at higher temperatures, but I do not think there are any practical
magnets made from them yet.
You might be able to get some of these new materials from a standard
scientific supply shop - check their catalog for "high temperature
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Update: June 2012