superconductivity and maglev trains

What is so super about superconductors? Perhaps the fact that superconductors are materials that have no resistance to the flow of electricity. So they basically will conduct electricity without resistance when the material is at a very cool temperature. Resistance becomes undesirable because it produces losses in the energy flowing through the material. Resistance creates heat which is why, when the material is cooled, the resistance will no longer be an included factor in the flow of electricity. Due to there being no resistance that means there is no loss in energy. Superconductivity creates much more energy than a normal conductor. If a current can be superconducting its flow of electricity will remain continuous. There are 2 types of Superconductors: Type I and Type II. Type I Superconductors are made from pure metals. Type I has a zero electricity resistivity, zero magnetic field, and critical magnetic field above which superconductivity stops. (hyperphysics) Type I Superconductors are often referred to as “soft” superconductors because they have been limited in practical usage. Type II superconductors are made from alloys. They exhibit much higher critical magnetic fields than Type I and for this are noted as the “hard” superconductor. Also all high temperature superconductors fall under Type II. Type II superconductors are able to sustain superconductivity in the presence of much higher magnetic fields. The real difference between the two superconductors is the way in which they revert to normal conductivity in the presence of a critical field. It can then be said that Type II is more commonly used because it is “stronger”. All superconducting magnets used in high-field research are Type II. In 1908, a Dutch physicist named Heike Kamerlingh Onnes liquefied Helium. By doing this he achieved lowering the temperature to about 1.5 K, this was the coldest temperature seen on Earth! Following this achievement, in 1911 Onnes found that a