Yuav ua li cas khiav lag luam thiab siv lub ntsuas hluav taws xob ntawm tes kom raug?
① Qhib lub hwj chim.
② Qhib lub npog qhov muag pom lub teeb thiab tso lub teeb ntes kab rov tav rau hauv txoj haujlwm ntsuas.
③ Xaiv lub ntsuas ntsuas tsim nyog.
Yog tias tsuas yog "1" pom nyob rau sab laug kawg ntawm cov zaub, nws txhais tau hais tias qhov illuminance ntau dhau lawm thiab koj yuav tsum nias qhov tseem ceeb (⑧ qhov tseem ceeb) los kho qhov ntsuas qhov sib npaug.
④ Lub illuminance meter pib ua hauj lwm thiab qhia cov illuminance tus nqi ntawm cov zaub.
⑤ Cov ntaub ntawv qhia ntawm cov zaub hloov tas li, thaum cov ntaub ntawv tso saib ruaj khov dua, nias lub khawm tuav kom kaw cov ntaub ntawv.
⑥ Nyeem thiab sau cov txiaj ntsig pom tau pom hauv cov ntawv nyeem. Tus nqi pom zoo yog sib npaug ntawm cov khoom ntawm tus lej uas tau pom nyob rau hauv qhov kev nyeem ntawv thiab tus nqi ntau.
Piv txwv li: 500 yog tso tawm rau ntawm qhov screen, lub kaum sab xis sab xis ntawm cov xwm txheej yog "× 2000", qhov ntsuas qhov ntsuas qhov pom kev yog 1,000,000lx, piv txwv li (500 × 2000) .
⑦ Nias lub ntsuas phoo dua kom thim qhov kev nyeem tus nqi ntsuas phoo.
⑧ Txhua qhov kev soj ntsuam, peb nyeem sib law liag thiab sau cia.
⑨ Tom qab txhua qhov kev ntsuas ua tiav, nias lub hwj huam hloov khawm kom txiav tawm lub hwj huam mov.
⑩ Npog lub hau ntawm lub teeb pom kev thiab muab nws rov qab rau hauv lub thawv.
Lub illuminance meter (los yog lux meter) yog ib qho cuab yeej thiab meter uas tshwj xeeb hauv kev ntsuas luminosity thiab brightness. Nws yog qhov ntsuas ntawm lub teeb siv lub teeb (illuminance) Nws yog qhov degree uas ib qho khoom illuminated, uas yog, qhov piv ntawm cov luminous flux tau txais los ntawm qhov chaw ntawm cov khoom mus rau thaj chaw illuminated. Illuminance meter feem ntau yog tsim los ntawm selenium photocell lossis silicon photocell thiab microampere meter.
