Презентация на тему Superconductivity in science and in engineering

when the mercury in liquid helium is cooled, the

resistance first varies gradually

Superconductivity is the property of some materials to have a strictly zero electrical resistance when they reach a temperature below a certain value (critical temperature).

physics,
where for many years large research installations
and

new devices have been used.

In Physics

this property at very low temperatures, below -259 °

C, were known. In 1986-1987, materials were found with a superconducting transition temperature of about -173 ° C.

an impurity into the superconductor reduces the sharpness of

the transition to the superconducting state. In normal metals, the current disappears in about 10-12 seconds. In a superconductor, a current can circulate for years (theoretically 105 years!).

superconductors and ideal conductors is the Meissner effect, discovered

in 1933. The phenomenon was first observed in 1933 by German physicists Meissner and Oxenfeld

communication equipment
Strengths
cables
current limiters
magnets
motors
generators
energy stores
Application of superconductors

energy losses and reduce the weight and size of

equipment.

widely used in energy, industry, transport and much wider

in medicine and electronics.      In electronics, superconductivity will find wide application in computer technology. Potentially the most profitable industrial application of superconductivity is associated with the generation, transmission and efficient use of electricity.

be possible to use huge magnetic fields created with

the help of superconductors for the magnetic suspension of a train (magnetic levitation).

term, joint projects for the construction of cryotransport and

railways are possible. The possibility of accelerating macroscopic objects by the electromagnetic field will also find application at aerodromes and cosmodromes, where the SP magnets will provide take-off / landing to aircraft and spacecraft.