superconductivity


su·per·con·duc·tiv·i·ty

noun \-ˌkän-ˌdək-ˈti-və-tē, -kən-\

: the ability of something (such as a metal) to allow electricity to flow through it easily especially at very low temperatures

Full Definition of SUPERCONDUCTIVITY

:  a complete disappearance of electrical resistance in a substance especially at very low temperatures
su·per·con·duc·tor \-kən-ˈdək-tər\ noun

First Known Use of SUPERCONDUCTIVITY

1913

superconductivity

noun    (Concise Encyclopedia)

Almost total lack of electrical resistance in certain materials when they are cooled to a temperature near absolute zero. Superconducting materials allow low power dissipation, high-speed operation, and high sensitivity. They also have the ability to prevent external magnetic fields from penetrating their interiors and are perfect diamagnets (see diamagnetism). Since it was first discovered in mercury by Heike Kamerlingh Onnes in 1911, similar behaviour has been found in some 25 other chemical elements and in thousands of alloys and compounds. Superconductors have applications in medical imaging, magnetic energy-storage systems, motors, generators, transformers, computer components, and sensitive magnetic-field measuring devices.

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