Video: Kev tiv thaiv uv380 yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
UV ua kev tiv thaiv qauv sib txawv yog qhov sib txawv ntawm ANSI/ISO tsom iav qhov muag UV kev tiv thaiv qhov yuav tsum tau ua ntawm 380 nm thiab ISO hais txog ICNIRP UV Kev phom sij txhais lub kaus mom UVR ntawm 400 nm. Qhov sib txawv ntawm ob qhov nruab nrab yog 20 nm qhov sib txawv uas suav txog 40 feem pua ntawm hnub ci UVR raug (Daim duab 1).
Cov lus nug tseem yog, puas yog UV 400 tiv thaiv zoo?
Qhov kev nyab xeeb tshaj plaws yog yuav cov looj tsom iav uas muab 100% Kev tiv thaiv UV , los yog Kev tiv thaiv UV 400 . Qhov ntawd txhais tau tias tsom iav tiv thaiv koj ob lub qhov muag los ntawm hluav taws xob UVA thiab UVB. Cov looj tsom iav uas kim tshaj plaws muab rau qib no kev tiv thaiv ntawm txhua tus qauv. Uas tau hais tias, koj yuav tsum tsis txhob cuam tshuam nrog lub lens zoo nrog Kev tiv thaiv UV.
Qhov thib ob, puas yog UV tiv thaiv tib yam li kev tiv thaiv lub teeb xiav? Ib yam li UV teeb yog qhov txaus ntshai rau peb cov tawv nqaij, nws tseem txaus ntshai rau peb lub qhov muag. Yog li nws tseem ceeb heev uas peb tiv thaiv lawv los ntawm UV puas. UV teeb cuam tshuam rau pem hauv ntej ntawm lub qhov muag (tsim cataract), thaum lub teeb xiav ua rau puas lub nraub qaum (qhov pheej hmoo ntawm AMD).
Tom qab ntawd, ib tus tuaj yeem nug, UV 100 tiv thaiv yog dab tsi?
UV400 kev tiv thaiv -uas yog ze li 100 feem pua kev tiv thaiv los ntawm teeb meem ultraviolet rays-tau tiv thaiv koj cov peepers zoo rau lub neej.
Qhov txawv ntawm kev tiv thaiv UV thiab polarized yog dab tsi?
Kev tiv thaiv UV tiv thaiv koj lub qhov muag los ntawm cov phom sij txaus ntshai ntawm hnub thaum polarized looj tsom iav dub tshem tawm qhov muag. Muaj tiv thaiv ultraviolet yog qhov tseem ceeb thaum polarization yog qhov nyiam dua Polarized tsom iav ua kom pom cov duab zoo dua tab sis tsis tuaj nrog puv Kev tiv thaiv UV.
Pom zoo:
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