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现在是1页\一共有26页\编辑于星期日*Born:March3,1847*Parents:AlexanderMelvilleBellandElisaGraceSymonds*Siblings:2brothers,MelvilleandEdwardAlexanderGrahamBell现在是2页\一共有26页\编辑于星期日AlexanderGrahamBellgrewupinEdinburgh,Scotlandwithhisfamily.Childhood现在是3页\一共有26页\编辑于星期日LearningFromtheFamilyAsachild,Bellinheritedamusicaltalentfromhismother,whowasamusicianandalsoaportraitpainter.Hewastaughtbyhisgrandfatherandfatheraboutpublicspeaking.现在是4页\一共有26页\编辑于星期日HelloGrandpa!WhenBellwas13yearsold,hespentayearwithhisgrandfatherinLondon.ToGraham,thisyearwasthe“turningpointofhislife.”现在是5页\一共有26页\编辑于星期日

BellreadbooksinthelibraryaboutHermanvonHelmholtz,aGermanscientistwhoexperimentedwithelectricalvibrationstomakevowelsounds.

HermanvonHelmholtz

Heresearchedhisexperimentssothatsomedayhemightbeabletoreconstructtheminhisownhome.

现在是6页\一共有26页\编辑于星期日EarlyLife

AttheAgeof16,Grahambegantoteachmusicandspeechataboysschool.Yearslater,Bellstartedteachinghisfathersvisualspeechtodeafandhearingimpairedchildren.Bellatage29现在是7页\一共有26页\编辑于星期日Tuberculosis-1870

In1870,Bell’stwobrothersdiedoftuberculosis.

SinceBellwasalsothreatenedhisfamilydecidedtomovetoahealthierenvironment,Canada.

现在是8页\一共有26页\编辑于星期日

AfterGrahamwassafefromcatchingthedisease,hisjobledhimtobeaphysiologyprofessoratBostonUniversityintheUnitedStates.HelloBoston!Good-byeCanada!现在是9页\一共有26页\编辑于星期日WhileBellwasinMassachusetts,heinventedtheharmonictelegraph,aninstrumentthatmakesitpossibletosendmultipletelegraphsononeline.BostonUniversity现在是10页\一共有26页\编辑于星期日

OnMarch7,1876,Bellrecievedhispatentforthetelephone.TheTelephoneisPatented现在是11页\一共有26页\编辑于星期日“Mr.Watson,comehere,Iwantyou.”

OnMarch10,1876,AlexanderGrahamBellwasinhistestingroomwithhispartner,Watson.

现在是12页\一共有26页\编辑于星期日Theexperimenttheywereworkingwithhadreedsthatwerethinandsteel.

OneofthereedswasstucksoWatsonpluckedittotrytofixit.Reeds现在是13页\一共有26页\编辑于星期日Whenhedid,Grahamheardthevibrationclearlythroughthenewlyinvented‘telephone’.Successful!现在是14页\一共有26页\编辑于星期日

TheSimpleTelephone

Therearethreepartstothesimpletelephone.TheSpeaker,theMicrophoneandtheSwitch,alsoknownastheHookSwitch.

现在是15页\一共有26页\编辑于星期日TheHookSwitch

TheHookSwitchconnectsanddisconnectsthephonefromthetelephonenetwork.Thenetworkisconnectedwhenyoupickupthephone.现在是16页\一共有26页\编辑于星期日Thespeakerpicksupthesoundswavesfromtheotherline,andsendsthemthroughthenetworktoyoureardrums.Thesoundsvibrateinyourear,andyouthenhavesound.TheSpeaker现在是17页\一共有26页\编辑于星期日TheMicrophoneThemicrophonehasadiaphragmwherethesoundswavesvibratethearea.Theamplifier,asmallpartofthetelephonethensendsitthroughtotheotherline’sspeaker,reinterpretingthesoundsintophysicalvibrations.

现在是18页\一共有26页\编辑于星期日AMoreModernizedTelephoneTomakeuptherealtelephonetherearethe3majorparts,likethesimplephone,and3morenewparts,theseincludetheDuplexcoil,thekeypadandtheringer.现在是19页\一共有26页\编辑于星期日TheDuplexCoilInthesimplephone,youcanhearyourselfthroughthespeakerwhenyoutalk.TheDuplexcoilisadevicethatenablesyoutospeakintothemicrophonewithouthearingyourvoice.

现在是20页\一共有26页\编辑于星期日TheRingerTheRingerwasalsoanimprovementmadefromthesimpletelephone.Theringerismadeupofabellsothatyouareawarewhenanotherlineiscallingyou.现在是21页\一共有26页\编辑于星期日KeypadThetouchtonekeypadconsistsoftwelvebuttons.Ithasthedigits1-9,andzero.Totheleftofthezeroisthestarkey.Locatedonit’srightisthepoundkey.

现在是22页\一共有26页\编辑于星期日TheTelephoneThetelephonemayseemlikeacomplicatedmachine,butitreallyisoneofthesimplestdevicesthatyoumayfindinyourhome,oranywhereelseyoucanimagine.

现在是23页\一共有26页\编辑于星期日TheTelephoneTodayToday,phoneshavebeenabletogetevensmallerandevenhavenocords.Inthebottomleft,thereisapalmpilotthatcanalsobeusedataphone.Thetelephoneisauniquepieceofequipment.Noonecanimagineourworldwithoutit.

现在是24页\一共有26页\编辑于星期日ASaddayinHistoryOnAugust2,1922,AlexanderGrahamBelldiedathishomeinBaddekNovaScotia.

现在是25页\一共有26页\编辑于星期日Bibliography---.“AlexanderGrahamBell.”LucidCafé.---.---.April27,2005</library196ma