電話發(fā)明者貝爾英文介紹演示文稿

電話發(fā)明者貝爾英文介紹演示文稿現(xiàn)在是1頁(yè)\一共有26頁(yè)\編輯于星期日*Born:March3,1847*Parents:AlexanderMelvilleBellandElisaGraceSymonds*Siblings:2brothers,MelvilleandEdwardAlexanderGrahamBell現(xiàn)在是2頁(yè)\一共有26頁(yè)\編輯于星期日AlexanderGrahamBellgrewupinEdinburgh,Scotlandwithhisfamily.Childhood現(xiàn)在是3頁(yè)\一共有26頁(yè)\編輯于星期日LearningFromtheFamilyAsachild,Bellinheritedamusicaltalentfromhismother,whowasamusicianandalsoaportraitpainter.Hewastaughtbyhisgrandfatherandfatheraboutpublicspeaking.現(xiàn)在是4頁(yè)\一共有26頁(yè)\編輯于星期日HelloGrandpa!WhenBellwas13yearsold,hespentayearwithhisgrandfatherinLondon.ToGraham,thisyearwasthe“turningpointofhislife.”現(xiàn)在是5頁(yè)\一共有26頁(yè)\編輯于星期日

BellreadbooksinthelibraryaboutHermanvonHelmholtz,aGermanscientistwhoexperimentedwithelectricalvibrationstomakevowelsounds.

HermanvonHelmholtz

Heresearchedhisexperimentssothatsomedayhemightbeabletoreconstructtheminhisownhome.

現(xiàn)在是6頁(yè)\一共有26頁(yè)\編輯于星期日EarlyLife

AttheAgeof16,Grahambegantoteachmusicandspeechataboysschool.Yearslater,Bellstartedteachinghisfathersvisualspeechtodeafandhearingimpairedchildren.Bellatage29現(xiàn)在是7頁(yè)\一共有26頁(yè)\編輯于星期日Tuberculosis-1870

In1870,Bell’stwobrothersdiedoftuberculosis.

SinceBellwasalsothreatenedhisfamilydecidedtomovetoahealthierenvironment,Canada.

現(xiàn)在是8頁(yè)\一共有26頁(yè)\編輯于星期日

AfterGrahamwassafefromcatchingthedisease,hisjobledhimtobeaphysiologyprofessoratBostonUniversityintheUnitedStates.HelloBoston!Good-byeCanada!現(xiàn)在是9頁(yè)\一共有26頁(yè)\編輯于星期日WhileBellwasinMassachusetts,heinventedtheharmonictelegraph,aninstrumentthatmakesitpossibletosendmultipletelegraphsononeline.BostonUniversity現(xiàn)在是10頁(yè)\一共有26頁(yè)\編輯于星期日

OnMarch7,1876,Bellrecievedhispatentforthetelephone.TheTelephoneisPatented現(xiàn)在是11頁(yè)\一共有26頁(yè)\編輯于星期日“Mr.Watson,comehere,Iwantyou.”

OnMarch10,1876,AlexanderGrahamBellwasinhistestingroomwithhispartner,Watson.

現(xiàn)在是12頁(yè)\一共有26頁(yè)\編輯于星期日Theexperimenttheywereworkingwithhadreedsthatwerethinandsteel.

OneofthereedswasstucksoWatsonpluckedittotrytofixit.Reeds現(xiàn)在是13頁(yè)\一共有26頁(yè)\編輯于星期日Whenhedid,Grahamheardthevibrationclearlythroughthenewlyinvented‘telephone’.Successful!現(xiàn)在是14頁(yè)\一共有26頁(yè)\編輯于星期日

TheSimpleTelephone

Therearethreepartstothesimpletelephone.TheSpeaker,theMicrophoneandtheSwitch,alsoknownastheHookSwitch.

現(xiàn)在是15頁(yè)\一共有26頁(yè)\編輯于星期日TheHookSwitch

TheHookSwitchconnectsanddisconnectsthephonefromthetelephonenetwork.Thenetworkisconnectedwhenyoupickupthephone.現(xiàn)在是16頁(yè)\一共有26頁(yè)\編輯于星期日Thespeakerpicksupthesoundswavesfromtheotherline,andsendsthemthroughthenetworktoyoureardrums.Thesoundsvibrateinyourear,andyouthenhavesound.TheSpeaker現(xiàn)在是17頁(yè)\一共有26頁(yè)\編輯于星期日TheMicrophoneThemicrophonehasadiaphragmwherethesoundswavesvibratethearea.Theamplifier,asmallpartofthetelephonethensendsitthroughtotheotherline’sspeaker,reinterpretingthesoundsintophysicalvibrations.

現(xiàn)在是18頁(yè)\一共有26頁(yè)\編輯于星期日AMoreModernizedTelephoneTomakeuptherealtelephonetherearethe3majorparts,likethesimplephone,and3morenewparts,theseincludetheDuplexcoil,thekeypadandtheringer.現(xiàn)在是19頁(yè)\一共有26頁(yè)\編輯于星期日TheDuplexCoilInthesimplephone,youcanhearyourselfthroughthespeakerwhenyoutalk.TheDuplexcoilisadevicethatenablesyoutospeakintothemicrophonewithouthearingyourvoice.

現(xiàn)在是20頁(yè)\一共有26頁(yè)\編輯于星期日TheRingerTheRingerwasalsoanimprovementmadefromthesimpletelephone.Theringerismadeupofabellsothatyouareawarewhenanotherlineiscallingyou.現(xiàn)在是21頁(yè)\一共有26頁(yè)\編輯于星期日KeypadThetouchtonekeypadconsistsoftwelvebuttons.Ithasthedigits1-9,andzero.Totheleftofthezeroisthestarkey.Locatedonit’srightisthepoundkey.

現(xiàn)在是22頁(yè)\一共有26頁(yè)\編輯于星期日TheTelephoneThetelephonemayseemlikeacomplicatedmachine,butitreallyisoneofthesimplestdevicesthatyoumayfindinyourhome,oranywhereelseyoucanimagine.

現(xiàn)在是23頁(yè)\一共有26頁(yè)\編輯于星期日TheTelephoneTodayToday,phoneshavebeenabletogetevensmallerandevenhavenocords.Inthebottomleft,thereisapalmpilotthatcanalsobeusedataphone.Thetelephoneisauniquepieceofequipment.Noonecanimagineourworldwithoutit.

現(xiàn)在是24頁(yè)\一共有26頁(yè)\編輯于星期日ASaddayinHistoryOnAugust2,1922,AlexanderGrahamBelldiedathishomeinBaddekNovaScotia.

現(xiàn)在是25頁(yè)\一共有26頁(yè)\編輯于星期日Bibliography---.“AlexanderGrahamBell.”LucidCafé.---.---.April27,2005</library196ma