Cov chav kawm txuj ci teeb pom kev zoo tuaj yeem tiv thaiv qhov muag zoo dua
Rau cov menyuam kawm ntawv, ib puag ncig tseem ceeb dua. Ntxiv rau qhov projectors, qhov tseem ceeb tshaj plaws yog qhov teeb meem ntawm teeb pom kev zoo, lossis cua txias! Hais txog teeb pom kev zoo, qhov tseeb, muaj ib hom teeb pom kev zoo tshwj xeeb uas cov tub ntxhais kawm siv hauv chav kawm. Lub npe, nws lub npe yog Classroom Light. Lub teeb zoo li no zoo li qhov chaw siab heev, tab sis qhov tseeb nws yog tib yam li lub teeb incandescent peb feem ntau siv hauv tsev. Koj yuav tsum paub tias qhov chaw hauv chav kawm hauv tsev kawm ntawv loj heev, yog li zoo li lub teeb zoo li no, chav kawm yuav muaj rau rau yim qhov tshwm sim.
Lub teeb chav kawm zoo li no, nws lub sijhawm lav yuav tsum ntev heev, tom qab tag nrho, lub tsev kawm ntawv muaj cov neeg ua haujlwm kho tshwj xeeb, uas tuaj yeem kuaj xyuas thiab kho nws txhua lub sijhawm thiab nyob qhov twg. Qhov tseeb, nyob rau hauv cov tsev kawm ntawv theem nrab thiab theem siab hauv lub nroog, lub tsev kawm ntawv zoo li no siv cov roj teeb uas muaj ntau heev, tab sis nyob rau hauv cov nroog loj, lawv tsis siv li no, tab sis tshwj xeeb tshaj yog. Cov tub ntxhais kawm feem ntau siv lawv lub qhov muag, yog li kev tiv thaiv lawv qhov muag yog ib qho tseem ceeb heev. Tom qab ntawd kuv yuav tau saib xyuas ntau dua rau qhov no thaum kuv xaiv cov teeb hauv chav kawm hauv qee lub tsev kawm ntawv hauv nroog loj.
Tau kawg, txawm hais tias cov tsev kawm ntawv hauv lub nroog tsis siv lub teeb hauv chav kawm siab, lawv npaj sijhawm rau kev tawm dag zog qhov muag txhua hnub. Qhov no kuj yog qhov tsim nyog rau kev tiv thaiv qhov muag ntawm cov tub ntxhais kawm. Hauv Suav teb, pawg tub ntxhais kawm raug tiv thaiv los ntawm ntau tus neeg, suav nrog niam txiv, tsev kawm ntawv, zej zog thiab txhua yam kev tiv thaiv. Yog li yog tias muaj kev tso cai, cov tsev kawm ntawv tuaj yeem xaiv cov teeb pom kev zoo hauv chav kawm, uas tuaj yeem tiv thaiv qhov muag ntawm cov tub ntxhais kawm zoo dua. Cov teeb meem qhov muag ntawm cov menyuam kawm ntawv yog qhov ua tau ntev heev. Tom qab tag nrho, qhov tshwm sim ntawm cov khoom siv hluav taws xob tau ua rau ntau tus neeg myopia.
