专业英语-6new

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1、TheSecondLawThermodynamicsandTesla'sFuellessGeneratorOliverNichelsonDuringanaddresscommemoratingtheinstallationofhiselectricalgeneratorsatNiagaraFalls,NikolaTeslatoldhislisteners:Wehavetoevolvemeansforobtainingenergyfromstoreswhichareforeverinexhaustible,toperfectmethodswhichdonotimplycon

2、sumptionandwasteofanymaterialwhatever.Inowfeelsurethattherealizationofthatideaisnotfaroff....thepossibilitiesofthedevelopmentIreferto,namely,thatoftheoperationofenginesonanypointoftheearthbytheenergyofthemedium...(Tesla,1897)In1902,TeslawrotetohisfriendandpublisherRobertUnderwoodJohnsonth

3、athehadalreadydevelopedadeviceforusingtheenergyofthesurroundingmediumtogenerateelec-tricity(Nichelson,1993).IntheletterhestatedthatthedesignprinciplesforthisnewtypeofgeneratorwerediscussedinhisJune1900CenturyMagazinearticle(Tesla,1902)onpage200,"particularlywhereIrefertonovelfacts."AnEner

4、gySinkHisreferenceistothearticle"TheProblemofIncreasingHumanEnergy-ThroughtheUseoftheSun'sEnergy"(Tesla,1900).The"novelfacts"arementionedinasectionentitled"Ener-gyfromtheMedium."Itisinthisandinthefollowingsectionwherethetheoreticalanddevelopmentaldiscussionsofthisnewgeneratortakeplace.Tes

5、lausestwoversionsofsimplegraphicimagetoexplainhowsuchanenergyextractinggeneratorwouldwork.InthefirstexampleheasksthatweconsideraclosedcylindersuchthatenergycouldnotbetransferredacrossitexceptthroughachannelorpathO...and...that,bysomemeansorother,inthisinclosureamediumweremaintainedwhichwo

6、uldhavelittleenergy,andthatontheoutersideofthesametherewouldbetheordinaryambientmediumwithmuchenergy.Teslacontinues:UndertheseassumptionstheenergywouldflowthroughthepathO,asindicatedbythearrow,andmightthenbecon-vertedonitspassageintosomeotherformofenergy.Couldweproduceartificiallysucha"si

7、nk"fortheenergyofthe1.AmbientMediumEnergyambientmediumtoflowin[and]...beenabledtogetatanypointoftheglobeacontinuoussupplyofenergy,dayandnight(Tesla,1900).onichelson@post.harvard.eduInthenextparagraphTeslagivesanotherversionofhowthisenergyextractionprocesswouldtakepl