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1、APROBLEMABOUTSUPERCONDUCTIVEPRODUCER:YAOLEI0410269ForewordThehistoryofthesuperconductiveThetheoryofthesuperconductiveTheuseandprocessofthesuperconductiveSummarySomeday,whenIwasdoingtheexercise,Ifoundaninterestingproblemaboutthesuperconductive.SoIwanttotalkaboutsomethingaboutthesupe
2、rconductive.FOREWORDTheproblemThequestioniswhetherornotthemagneticfieldexistinasuperconductivityballhull?Thekey:notexist.ThehistoryofthesuperconductiveIn1908,H.Kamerlingh-OnnesofanuniversityofHollandcarryouttheliquefactionofHefortheveryfirsttime,acquiringthelowtemperatureofthe4.2Ks
3、(-268.8℃s),openingaconvenientdoorforstudyingunderthelowtemperatureconditionthematerialconductedelectricity.In1911,hediscoveredtocooloffmercury-268.98℃s.Theelectricresistanceofthemercurydisappearedsuddenly.Onnescalledthiskindofconductorthatwasplacedinthesuperconductiveappearanceasth
4、esuperconductivity.Thetemperaturewhensuperconductivityelectricresistancesuddenlychangesintozerowascalledthesuperconductivecriticaltemperature.BecauseofthisdetectionheacquiredtheNobelprizein1913.Completeanti-magnetismIn1933,twoscientistsdiscoveredtheextremelyimportantpropertythatift
5、woofthesuperconductivitytogether,orthemetalsplacedinthesuperconductiveappearance,themagneticlinesofforceinthesuperconductivityiszero,whichwasexistinthemagneticfieldinthebody.Butnowitisdiscriminatedagainstandgooutoriginally.Peoplecallthisphenomenon“Meisnereffect”。Twoimportantcharact
6、eristicsofthesuperconductivity:Zeroelectricresistancesandanti-magnetisms。Sincethesuperelectricalconductivitywasdiscovered,throughtheeffortofmorethan70years,thecriticaltemperatureofthenormalregulationssuperconductivitycanraiseonly23.22Ks.BecauseonlytheliquidHeappeartheabilityabovesu
7、perconductivephenomenon.ButHe,akindofrareair,asaresult,limittedthesuperconductiveapplicationconsumedly.Intheearly60's,thepeoplearealwaysatinvestigateaboutraisingtheliquidnitrogen(77Ks)tothesuperconductivecriticaltemperatureaboveofway,thisisthesuperconductiveresearchofheat.Butin1986
8、,thesuperconductiveresearc