Editing Superconductors and the Architecture of the Zero Resistance (section)

== <span style="color: #FFFFFF;">Understanding</span> ==
Superconductors are understood through '''the tyranny of the cryogenics''' and '''the limit of the magnetic field'''.

'''The Tyranny of the Cryogenics''': Superconductors are miraculous, but they are prisoners of the cold. You cannot build a global power grid out of superconducting wire because you would have to build a 3,000-mile-long pipe filled with boiling liquid nitrogen to keep the wire frozen. The extreme cost, complexity, and fragility of cryogenic cooling restrict superconductors to highly specialized, localized applications (like the inside of an MRI machine or a particle accelerator). The entire multi-billion-dollar global race for a "Room Temperature Superconductor" is an attempt to finally break the chains of cryogenics and unleash the technology into the warm, ambient world.

'''The Limit of the Magnetic Field''': Superconductors have a fatal weakness. If you expose a superconductor to a magnetic field that is too strong, or if you pump an electrical current through it that is too high, the quantum "Cooper Pairs" violently break apart. The material instantly, catastrophically loses its superconductivity, reverting to normal wire. In an MRI machine, if the wire suddenly loses superconductivity while carrying massive current, the wire instantly superheats, boiling the liquid helium into a massive, explosive expansion of gas (A Quench). Engineers must constantly balance massive power against the fragile quantum threshold of the material.
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