Superconductors,asthenamesuggests,areconductorsthatdonotdissipateenergyafterpassingacurrent.AftertheDutchscientistOnnesdiscoveredthesuperconductivityofmercuryin1911,peopleonlychangedthetemperatureinth...
OverviewThefirstgenerationoflaseranti-counterfeitingtechnologyismainlyusedtomakelaser-moldedholographicimageanti-counterfeitinglabels.Becauseofthepoormonochromaticityandpoorcoherenceofordinarylightsou...
BackgroundThebirthofSDHtechnologyhasitsinevitability.Withthedevelopmentofcommunication,theinformationrequiredtobetransmittedisnotonlyvoice,butalsotext,data,imagesandvideos.Coupledwiththedevelopmentofd...
Thecellbodyofthehorizontalcellislocatedoutsidetheinnercorelayerandsendsoutmanyhorizontalbranchesextendingintotheoutermeshlayertoformsynapseswithrodcells,bipolarcellsandinterreticularcells.Therearegapj...
BackgroundStartingfromOctober2002,CCTV’sannualselectionof"MovingChina"figuresoftheyearhasarousedstrongrepercussionsinthesociety.Fromthepeople’sservantZhengPeimin,spaceheroYangLiwei,one-armedheroDingXi...
IntroductionLanguageistheessentialcharacteristicthatdistinguisheshumansfromotheranimals.Amongalllivingthings,onlyhumanshavetheabilitytospeak.Avarietyofhumanintelligencesarecloselyrelatedtolanguage.Hum...
SynonymouscopperplategenerallyreferstocopperyuanBasicinformationTheoriginofcopperyuanTheearliestcoppercoin(machinedcoppercoin)inChinawasborninthethirteenthyearofGuangxubyZhangZhidong,thegovernorofGuan...
RawmaterialcharacteristicsNaturalfiberThenaturalfibercontainedinsilkismainlysilkfiber,whichisacontinuouscoagulationofthesilkliquidsecretedbythecocoonwhenthecocoonisformed.Longfiber,alsoknownasnaturals...
ThesynonymGeorgeEastmangenerallyreferstoGeorgeEastman.AnexcellenttalentPersonalInformationEastmanwasborninWaterville,NewYork,USA(Waterville)village.ItistheyoungestofthethreechildrenofMariaKilbournandG...
DefinitionInformationManagement(InformationManagement,IM)isthecomprehensiveuseoftechnological,economic,policy,legalandhumanisticmethodsandMeansinordertocontrolinformationflow(includinginformalinformat...
OverviewDecodingisthereverseprocessofencoding.Duringencoding,eachbinarycodeisassignedaspecificmeaning,thatis,itrepresentsacertainsignalorobject.Theprocessof"translating"thespecificmeaningofthecodestat...
WorkingprincipleRollingballmouse:Therubberballisdriventothegratingwheelwithlight-emittingdiodesandphototransistorwaferpulsesignalsensor.Opticalmouse:Alightsourcepulsesignalsensorwithlight-emittingsemi...
DevelopmenthistoryThebuddingeraThehistoryofNokiabeganin1865.In1865,miningengineerFredichIdestamestablishedawoodpulpfactorybyariverinTampere,Finland.ThefactorywaslocatedatthejunctionofFinlandandtheRuss...
SpreadinghistoryTangDynastyFirstdiscoveryIn627,inChencangshan,FengxiangMansion,Shaanxi(InBeihan,Shigushan,BaojiCity,anoldshepherdfound10strangegraniteboulders.Thesehugestonebodiesareshapedlikedrums,ro...