Lub tsheb sab iav puas yog concave los yog convex? Qhov no yog ib lo lus nug uas ntau tus neeg muaj, thiab cov lus teb yog tias lawv feem ntau convex. Qhov no txhais tau hais tias daim iav nkhaus sab nraud thiab muab qhov dav dav rau tus neeg tsav tsheb.
Txawm hais tias qee tus yuav xav tias daim iav concave yuav muab qhov pom zoo dua, qhov no tsis yog qhov teeb meem. Concave iav nkhaus sab hauv thiab tuaj yeem cuam tshuam cov duab uas tau cuam tshuam, ua rau nws nyuaj rau txiav txim qhov deb thiab qhov loj ntawm cov khoom. Convex mirrors, ntawm qhov tod tes, muab cov duab pom tseeb ntawm qhov tom qab thiab ib sab ntawm lub tsheb.
Cov tuam txhab tsheb ua tib zoo xaiv qhov loj thiab cov duab ntawm daim iav convex kom pom qhov zoo tshaj plaws rau cov neeg tsav tsheb. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov tsheb loj xws li tsheb thauj khoom thiab tsheb npav, vim tias lawv muaj qhov muag tsis pom qhov muag loj dua thiab xav tau ntau lub zeem muag los ua kom muaj kev nyab xeeb.
Nws yog ib qho tsim nyog sau cia tias qee lub tsheb yuav muaj kev sib xyaw ua ke ntawm convex thiab concave mirrors, nrog convex mirrors siv rau sab iav thiab concave mirrors siv rau rearview daim iav. Qhov kev sib xyaw ua ke no muab ob qho kev pom dav dav thiab pom tseeb ntawm cov khoom tom qab lub tsheb.
Hauv kev xaus, lub tsheb sab iav feem ntau yog convex, muab qhov dav dav ntawm qhov pom thiab pom meej dua ntawm qhov tom qab thiab ib sab ntawm lub tsheb. Nws yog ib qho tseem ceeb rau cov neeg tsav tsheb kom nkag siab tias lawv cov iav ua haujlwm li cas thiab kho lawv kom zoo kom muaj kev nyab xeeb thiab siv tau zoo thaum tsav tsheb.