Vim li cas thiaj tsom rau ob qho tib si pem hauv ntej (lub hom phiaj) thiab ntawm lub qhov muag (qhov muag)?
Cov lus teb luv luv yog tias koj tsis tau saib los ntawm lub zeem muag hmo ntuj, koj tab tom pom qhov phosphor screen nyob hauv qab ntawm lub raj. Lub hom phiaj lens tsom cov duab nyob rau hauv pem hauv ntej ntawm lub intensifier raj, uas hloov cov duab mus rau hauv ib tug kwj ntawm electrons, uas yog reimaged nyob rau hauv qab ntawm lub raj. Txhawm rau pom cov duab meej, koj yuav tsum tsom koj lub qhov muag nyob rau hauv qab ntawm lub raj intensifier qhov twg daim duab tsim. Txhua tus neeg lub qhov muag tsis pom kev sib txawv, yog li kev tsom xam qhov muag kuj tseem ceeb heev. Tsom ntsoov rau txoj kab ntawm qhov pom ua ntej, thiab tom qab ntawd hloov mus rau daim iav lub hom phiaj kom paub meej cov duab. Tsis tas li, koj yuav xav tau ntau qhov kev txhaj tshuaj ntawm txhua qhov prism kom tau txais cov duab zoo tshaj plaws.
Tsim tshwj xeeb rau cov tsom iav hmo ntuj?
Cov cuab yeej pom kev hmo ntuj yog tsim los kom luv luv thaum tsis siv, thiab tsuas yog pib ua haujlwm thaum pib hloov pauv. Cov cuab yeej binocular muaj qhov "on / off" hloov uas yuav tsum tau tus neeg siv kom tua lub cuab yeej tom qab siv. Nws yog ib txwm muaj yog tias muaj qee lub suab "humming", nws txhob txwm tsim los pab tus neeg siv paub qhov txawv ntawm lub hwj chim thiab lub hwj chim tawm. Cov duab nyob rau hauv lub qhov muag pom kev hmo ntuj yog tsim los ntawm ib tug phosphor screen, uas muaj ib tug me ntsis astigmatism, yog li nws tsis tuaj yeem pom meej li lub hnub ci tsom iav. Cov pob me me dub tuaj yeem pom hauv daim duab, uas yog ib qho tshwm sim los ntawm cov txheej txheem ntawm kev tsim cov raj intensifier, tsis yog qhov teeb meem zoo.
Dab tsi yog qhov sib txawv ntawm ntau tiam neeg ntawm kev pom kev hmo ntuj?
Qhov sib txawv tseem ceeb yog kev nce qib ntawm cov cuab yeej txhawb nqa. Thawj tiam siv lub raj intensifier los txhim kho qhov ci ntsa iab ntawm ib puag ncig ib puag ncig, uas tuaj yeem ua kom cov hluav taws xob ntws mus rau qhov chaw phosphor, ib yam li lub hauv paus ntsiab lus ntawm lub vijtsam TV. Generation II li, ntawm qhov tod tes, ntxiv ib qho micro-frequency disk, uas ua rau cov xov tooj ntawm electrons tawm tsam phosphorous nto, yog li txhim kho qhov ci. Gen III pab kiag li lawm ntxiv ib gallium arsenide photocathode, uas ua rau ntau dua photoelectrons dua Gen II. Ob tiam thib ob thiab tiam thib peb tau ua tiav zoo hauv kev ua kom ci ntsa iab, tab sis lawv cov nqi kuj tseem kim, uas cuam tshuam cov neeg siv khoom feem ntau. Qhov zoo ntawm thawj tiam yog qhov zoo, thiab nws cov nyhuv ci ntsa iab kuj tuaj yeem ua tau raws li qhov xav tau ntawm cov neeg siv feem ntau thiab ntau tus neeg siv khoom, yog li nws muaj kev lag luam.
