Superconductivity was discovered by a Dutch scientist by the name of Heike Kamerlingh Onnes in 1911. While researching properties of materials at absolute zero, this man found out that certain materials lost its resistance to the flow of electrons. For years to come, his discovery was at the head of theoretical interest. The only problem though, was that people at that time could not even think of a way to produce such a temperature, to allow materials to be superc

Except for the elements vanadium and niobium, Type 2 superconductors consists of metallic compounds and alloys. The recently discovered superconducting "perovskites" or superconducting ceramics belong to this Type 2 group. Type 2 superconductors differ from Type 1 in that their transition from a normal to a superconducting state is regular across a region of mixed behavior. A Type 2 superconductor will also allow some invasion by an outer magnetic field into its surface. A Type 1 superconductor won't.

Super conductors have many uses. They are used in trains as magnetic-levitation devices, which makes certain trains appear to float while in motion. Superconductors are also used medically in MRI's and commonly in electric generators, making them more efficient.

The Type 1 category of supercon

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