User:Ashwath subrahmanya P/Sandbox

SUPERCONDUCTIVITY

SUBSTANCES AVAILABLE IN THE NATURE HAVE BEEN DIVIDED INTO 3 TYPES 1) CONDUCTORS 2) INSULATORS 3) SEMICONDUCTORS BASED ON THE CONDUCTITIVTY. EVERY CONDUCTOR HAS SOME RESISTANCE WHICH IS THE OPPOSITION OFFERED BY IT TO THE FLOW OF CURRENT. THE RESISTANCE IS FOUND TO INCREASE WITH INCREASE IN TEMPERATURE AND DECREASE AS THE TEMPERATURE IS REDUCED.                                       BASED ON THIS IDEA H.K.ONNES CONDUCTED A LOT OF RESEARCH. HE FOUND THAT AS TEMPERATURE IS REDUCED TO 4K HELIUM'S RESISTANCE DRASTICALLY REDUCED TO ZERO.THIS PHENOMENON WAS CALLED SUPERCONDUCTIVITY. THEREAFTER LOT OF RESEARCH HAS BEEN DONE TO FIND A SUPERCONDUCTOR AT HIGHER TEMPERATURE AND SCIENTISTS HAVE SUCCEEDED TO FIND A SUPERCONDUCTOR AT -70 DEGREES. IN NEAR FUTURE ONE CAN EXPECT A ROOM TEMPERATURE SUPERCONDUCTOR. USES OF SUPERCONDUCTORS 1) ONE OBVIOUS USE OF SUPERCONDUCTOR WILL BE IN TRANSPORT OF ELECTRICITY 2) IN MRI SCANNING 3) TO CREATE A HIGH MAGNETIC FIELD