can someone tell me what a superconductor really is?

Answer 1

superconductor
A material that has little resistance to the flow of electricity. Traditional superconductors operate at -459 Fahrenheit (absolute zero).

Thus far, the major use for superconductors, made of alloys of niobium, is for high-powered magnets in medical imaging machines that use magnetic fields instead of x-rays.

Using experimental materials, such as copper oxides, barium, lanthanum and yttrium, IBM's Zurich research lab in 1986 and the University of Houston in 1987 raised the temperature of superconductivity to -59 degrees Fahrenheit. If superconductors can work at reasonable temperatures, they will have a dramatic impact on the future of computing. See Josephson junction.

Answer 2

Superconductivity is a phenomenon occurring in certain materials at extremely low temperatures (on the order of -200 degrees Celsius), characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect).

In 1962, the first commercial superconducting wire, a niobium-titanium alloy, was developed by researchers at Westinghouse. In the same year, Josephson made the important theoretical prediction that a supercurrent can flow between two pieces of superconductor separated by a thin layer of insulator.

This phenomenon, now called the Josephson effect, is exploited by superconducting devices such as SQUIDs. It is used in the most accurate available measurements of the magnetic flux quantum h/e, and thus (coupled with the quantum Hall resistivity) for Planck's constant h. Josephson was awarded the Nobel Prize for this work in 1973.

Answer 3

Its a conductor with no resistance

Answer 4

He's a very efficient guy who collects your bus fare

Answer 5

conductor with negligible resistance.