What is a superconductor?
A material is said to be a superconductor if when it is brought
down to a critical low temperature it loses its resistivity
A superconductor is a material that has zero electrical
resistance at certain temperatures. For example, in a ring of
superconducting material, if you induce a current to flow in a
circle, it will continue flowing for ever. So far, it has only been
possible to create superconductors at cryogenic (i.e., "supercold")
Superconductivity is a property of a substance at a given
temperature, not of a substance at any temperature.
Superconductors are things that have no electrical resistance
when they are at low enough temperatures, typically close to
absolute zero i.e. 0 Kelvin or about -273 degrees C.
There are also 'high-temperature' superconductors that operate
at about 70 degrees K (-203 degrees C).
We haven't yet found a substance that works as a superconductor
at room temperature there is a lot of research on-going. The aim is
to try to find metal alloys or other substances that will behave as
superconductors at temperatures which are much closer to room
temperature than to absolute zero i.e. 0 Kelvin or about -273
A conductor that allows electricity to flow easily ~APEX