A phonograph, hauv nws cov ntaub ntawv tom qab tseem hu ua gramophone lossis txij li xyoo 1940s hu ua tus neeg ntaus ntawv, yog ib qho khoom siv rau kev kaw suab thiab rov tsim suab.
Edison puas tau ua ib yam dab tsi?
"Tsis yog nws yuav tsum paub qhov teeb pom kev zoo xwb," Jonnes hais tias, "nws kuj yuav tsum tau tsim lub zog dynamo [cov tshuab hluav taws xob uas hloov tshuab hluav taws xob rau hauv hluav taws xob] rau cov hluav taws xob uas yuav ua haujlwm rau nws. system ntawm hluav taws xob tam sim no.
Alexander Graham Tswb txhim kho lub suab zoo li cas?
Alexander Graham Bell's Volta Laboratory tau ua ntau yam kev txhim kho hauv xyoo 1880s thiab tau qhia txog lub graphophone, suav nrog siv cov wax-coated cardboard cylinders thiab txiav stylus uas txav ntawm sab mus rau sab. nyob rau hauv zigzag zawj ib ncig ntawm cov ntaub ntawv.
Puas Thomas Edison nyiag cov tswv yim tsim tawm?
Nws nyob hauv kev sib tw sib tw uas nws qiv-qee hais tias nyiag- tswv yim los ntawm lwm tus neeg tsim khoom uas tseem ua haujlwm rau lub teeb taws. Dab tsi ua rau nws muaj kev vam meej thaum kawg yog tias nws tsis yog ib tus neeg tsim khoom ib leeg, ib tus neeg txawj ntse, tab sis yog tus sib sau ua ke ntawm thawj pab pawg tshawb fawb thiab kev txhim kho ntawm Menlo Park, NJ
phonograph nqi pes tsawg xyoo 1877?
Cov tshuab tau raug nqi, kwv yees li $ 150 ob peb xyoos dhau los. Tab sis raws li tus nqi poob rau $ 20 rau tus qauv qauv, cov tshuab tau dav dav. Lub tog raj kheej Edison thaum ntxov tuaj yeem ua tautsuas tuav txog ob feeb ntawm suab paj nruag. Tab sis raws li thev naus laus zis tau txhim kho, ntau yam kev xaiv tuaj yeem raug kaw.
