爱迪生发明电灯

爱迪生发明电灯的故事英文版

爱迪生发明电灯的故事英文版

Beforetheadventoftheelectriclight,thegeneraluofthe

mpburnskerone

orgas,therefore,thereisastrongblacksmokeandpungentodor,and

tooftenaddfuel,scrubshade,

riously,y

years,manyscientistshavetriedtheirbesttoinventasafeand

convenientelectriclamp.

AtthebeginningofnineteenthCentury,aBritishchemicalhouhold

2000batteriesandtwocarbonrods,madetheworld'

thiskindoflightistoostrong,canonlybeinstalledonthestreetor

square,ientistshavebrains,

houholdelectriclampwantstocreateacheap,durable.

ber21,1879,anAmerican

inventor,throughlongrepeatedexperiments,finallylittheworld's

hen,thenameofthe

inventor,asheinventedtheelectriclight,intothemillionsof

raidasthe"kingoftheinvention"Edison.

February11,1847,EdisonwasborninMilan,Ohio,theUnitedstates.

Helivesonlyinschoolreadbooksforthreemonths,buthewasstudious,

diligentinthinking,theinventionofelectriclight,phonograph,movie

camerasandother1000kindsofresults,madeasignificantcontribution

tohumanbeings.

WhenEdisonwas12yearsold,heindulgedinscienceexperiments,

throughtheirowndiligentlytolearnandexperiment,attheageof16,

,

afteranotherinventionoftheautomaticticketmachine,thefirst

practicaltypewriter,doubleandfourautomatictelegraph,telephoneand

phonographetc..WiththeresultsoftheinventionsEdisonisnot

satisfied,inSeptember1878,Edisondecidedtoelectriclightingthis

eadalotofbooksonelectricity

lighting,determinedtomakethepricecheap,durable,andsafeand

convenientelectriclight.

pieceofheat

resistanceintheglassbulb,whenthecurrenttoburnittotheextent

oftheheat,tthoughtofcharcoal,and

thenputasmallcutintoaglassbulb,justapowercanbebroken

immediately.

"Whatisthereason?"Edisonpickedupthebrokenintotwocarbon

wiregments,andthenlookattheglassbulb,afteralongtime,

suddenlythought,"Oh,maybebecauthereareair,oxygenintheair

andhelpcarbonwireburning,causingittoimmediatelycutoff!"sohe

udhishandmadeanairbubbleintheglassremovedasmuchas

,8minutes

later,thelightswentout.

Butnomatterhowtosay,Edisonfinallyfound:whenthevacuum

stateisveryimportant,thekeyiscarbonfilament,thecruxofthe

problemhere.

Sowhatkindofheatresistantmaterialshouldbechon?

Edisonthought,thehighestmeltingpoint,strongheatresistanceto

platinum!So,Edisonandhisaides,withplatinumtriedveraltimes,

butthehighmeltingpointofplatinum,althoughthelightemittingtime

extendedalot,butfromtimetotimetoturnofftheautomatic

automaticlight,isstillnotideal.

triedthebarium,titaniumandindiumandotherraremetals,theeffect

isnotveryideal.

Afteraperiodoftime,theexperimentalworkonthefrontofEdison

madeasummary,allkindsofheat-resistantmaterialsowncanthinkof

writing,atotalofmorethan1600kinds.

Next,heandaideswillbearrangedthe1600kindsofheatresistant

materialstotest,cantrytotry,ortheuofplatinumisthemost

eoftheimprovedpumpingmethod,thevacuumdegree

oftheglassbulbishigher,thelifeofthelampisprolongedto2

sismadeofplatinummaterialsmadeoflight,theprice

istooexpensive,whoiswillingtospendalotofmoneytobuyonly2

hoursoflight?

Theexperimentalworkwasinthedoldrums,Edisonverydistresd,

inacoldwinter,Edisonsitbythefire,lookingattheburning

charcoal,themouthcannothelpbutautomaticspeaking:"carbon......"

Dotheavailablecharcoalcharcoalhastriedtodo?Edisonfelthot,

shovingtheneckscarfoff,ethisscarfwithclothismadeofcotton,

Edison'smindsuddenlyhadanidea:

Right!Thefiberofthecottonyarnisbetterthanthatofthewood,

canyouuthiskindofmaterial?

Hehastilypulledoffacottonyarnfromthescarf,bakedinthe

fireforalongtime,fullyputthe

wireintoaglassbulb,atest,theeffectisverygood.

Edisonveryhappy,andthenmadealotofcottonyarnmadeofcarbon

fiber,eofabulb

extendedfor13hours,then45hours.

Thenewsspread,dongas

stockpriceplunged,havea

feeling,litthegaslampisabouttobecomehistory,thefuturewillbe

theeraoflightning.

WehavetocongratulateEdison,lovelyEdisondidnohappy

appearance,shookhisheadandsaid:"no,Istillhavetofindother

materials!"

"Why,it'snotenoughfor45hours,"theassistantaskedinsurpri.

"Noway!Ihopeitwillbe1000hours,it's16000hours,"Edisonreplied.