电话发明者贝尔英文介绍演示文稿

电话发明者贝尔英文介绍演示文稿当前第1页\共有26页\编于星期六\11点*Born:March3,1847*Parents:AlexanderMelvilleBellandElisaGraceSymonds*Siblings:2brothers,MelvilleandEdwardAlexanderGrahamBell当前第2页\共有26页\编于星期六\11点AlexanderGrahamBellgrewupinEdinburgh,Scotlandwithhisfamily.Childhood当前第3页\共有26页\编于星期六\11点LearningFromtheFamilyAsachild,Bellinheritedamusicaltalentfromhismother,whowasamusicianandalsoaportraitpainter.Hewastaughtbyhisgrandfatherandfatheraboutpublicspeaking.当前第4页\共有26页\编于星期六\11点HelloGrandpa!WhenBellwas13yearsold,hespentayearwithhisgrandfatherinLondon.ToGraham,thisyearwasthe“turningpointofhislife.”当前第5页\共有26页\编于星期六\11点

BellreadbooksinthelibraryaboutHermanvonHelmholtz,aGermanscientistwhoexperimentedwithelectricalvibrationstomakevowelsounds.

HermanvonHelmholtz

Heresearchedhisexperimentssothatsomedayhemightbeabletoreconstructtheminhisownhome.

当前第6页\共有26页\编于星期六\11点EarlyLife

AttheAgeof16,Grahambegantoteachmusicandspeechataboysschool.Yearslater,Bellstartedteachinghisfathersvisualspeechtodeafandhearingimpairedchildren.Bellatage29当前第7页\共有26页\编于星期六\11点Tuberculosis-1870

In1870,Bell’stwobrothersdiedoftuberculosis.

SinceBellwasalsothreatenedhisfamilydecidedtomovetoahealthierenvironment,Canada.

当前第8页\共有26页\编于星期六\11点

AfterGrahamwassafefromcatchingthedisease,hisjobledhimtobeaphysiologyprofessoratBostonUniversityintheUnitedStates.HelloBoston!Good-byeCanada!当前第9页\共有26页\编于星期六\11点WhileBellwasinMassachusetts,heinventedtheharmonictelegraph,aninstrumentthatmakesitpossibletosendmultipletelegraphsononeline.BostonUniversity当前第10页\共有26页\编于星期六\11点

OnMarch7,1876,Bellrecievedhispatentforthetelephone.TheTelephoneisPatented当前第11页\共有26页\编于星期六\11点“Mr.Watson,comehere,Iwantyou.”

OnMarch10,1876,AlexanderGrahamBellwasinhistestingroomwithhispartner,Watson.

当前第12页\共有26页\编于星期六\11点Theexperimenttheywereworkingwithhadreedsthatwerethinandsteel.

OneofthereedswasstucksoWatsonpluckedittotrytofixit.Reeds当前第13页\共有26页\编于星期六\11点Whenhedid,Grahamheardthevibrationclearlythroughthenewlyinvented‘telephone’.Successful!当前第14页\共有26页\编于星期六\11点

TheSimpleTelephone

Therearethreepartstothesimpletelephone.TheSpeaker,theMicrophoneandtheSwitch,alsoknownastheHookSwitch.

当前第15页\共有26页\编于星期六\11点TheHookSwitch

TheHookSwitchconnectsanddisconnectsthephonefromthetelephonenetwork.Thenetworkisconnectedwhenyoupickupthephone.当前第16页\共有26页\编于星期六\11点Thespeakerpicksupthesoundswavesfromtheotherline,andsendsthemthroughthenetworktoyoureardrums.Thesoundsvibrateinyourear,andyouthenhavesound.TheSpeaker当前第17页\共有26页\编于星期六\11点TheMicrophoneThemicrophonehasadiaphragmwherethesoundswavesvibratethearea.Theamplifier,asmallpartofthetelephonethensendsitthroughtotheotherline’sspeaker,reinterpretingthesoundsintophysicalvibrations.

当前第18页\共有26页\编于星期六\11点AMoreModernizedTelephoneTomakeuptherealtelephonetherearethe3majorparts,likethesimplephone,and3morenewparts,theseincludetheDuplexcoil,thekeypadandtheringer.当前第19页\共有26页\编于星期六\11点TheDuplexCoilInthesimplephone,youcanhearyourselfthroughthespeakerwhenyoutalk.TheDuplexcoilisadevicethatenablesyoutospeakintothemicrophonewithouthearingyourvoice.

当前第20页\共有26页\编于星期六\11点TheRingerTheRingerwasalsoanimprovementmadefromthesimpletelephone.Theringerismadeupofabellsothatyouareawarewhenanotherlineiscallingyou.当前第21页\共有26页\编于星期六\11点KeypadThetouchtonekeypadconsistsoftwelvebuttons.Ithasthedigits1-9,andzero.Totheleftofthezeroisthestarkey.Locatedonit’srightisthepoundkey.

当前第22页\共有26页\编于星期六\11点TheTelephoneThetelephonemayseemlikeacomplicatedmachine,butitreallyisoneofthesimplestdevicesthatyoumayfindinyourhome,oranywhereelseyoucanimagine.

当前第23页\共有26页\编于星期六\11点TheTelephoneTodayToday,phoneshavebeenabletogetevensmallerandevenhavenocords.Inthebottomleft,thereisapalmpilotthatcanalsobeusedataphone.Thetelephoneisauniquepieceofequipment.Noonecanimagineourworldwithoutit.

当前第24页\共有26页\编于星期六\11点ASaddayinHistoryOnAugust2,1922,AlexanderGrahamBelldiedathishomeinBaddekNovaScotia.

当前第25页\共有26页\编于星期六\11点Bibliography---.“AlexanderGrahamBell.”LucidCafé.---.---.April27,2005</library196m