Video: Lub iav tsheb puas nres UV rays?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Tsheb qhov rooj qhov rais tsis txhob nres UV rays . (Reuters Kev Noj Qab Haus Huv) - Tsheb qhov rais tsis txhob tiv thaiv lub hnub raug mob, yog li nws yuav yog ib lub tswv yim zoo los hnav looj tsom iav dub thiab lub hnub thaiv txawm tias thaum tsav tsheb, ib txoj kev tshawb fawb tshiab qhia. UV hluav taws xob tuaj yeem hla huab thiab iav.
Raws li, UV teeb puas dhau los ntawm iav?
Hauv qhov luv luv, qee yam ntawm Lub teeb UV tuaj yeem hla lub iav qhov rai . Thaum tsim los ntawm lub hnub, UV -C ua tsis nkag mus lub ntiaj teb huab cua. Txuj qhov rais iav , raws li International Ultraviolet Koom haum, yuav tso cai UV -A rau hla dhau hos yuav luag 100% ntawm cov UV -B thiab UV -C lub teeb yog thaiv.
Tsis tas li ntawd, cov iav tsheb puas muaj UV tiv thaiv? UVA tseem ua rau qee yam ntawm cov ntaub so ntswg puas rau lub sijhawm ntev, tab sis ua tsis ua a suntan los yog sunburn. Qhov xwm zoo yog, koj iav thaiv yuav luag txhua yam puas tsuaj UV hluav taws xob. Yog li ib daim iav , laminated iav, blocks 98 mus rau 99 feem pua ntawm tag nrho UV – A , B lossis C."
Ua li no, kuv tuaj yeem tiv thaiv kuv lub tsheb los ntawm UV rays li cas?
Cov txheej txheem ntawm cov yas pab ua kom cov cua ntsawj ntshab nqus yuav luag txhua lub hnub ultraviolet hluav taws xob . Yas yog ib txwm zoo ntawm nqus UV hluav taws xob , thiab tuaj yeem ua nrog ntxiv UV absorbers rau tiv thaiv txawm ntau.
Kuv puas tuaj yeem tau txais cov vitamin D los ntawm lub qhov rais?
Vitamin D yog tsim los ntawm lub cev thaum daim tawv nqaij raug ntaus los ntawm UVB rays, nrog 7-dehydrocholesterol yog cov tshuaj tshwm sim. Tab sis feem ntau iav qhov rais thaiv qhov wavelength no txhais tau tias koj ua tau 'tsis sau cov txiaj ntsig kev noj qab haus huv.
Pom zoo:
Kuv yuav tig kuv lub looj tsom iav ua iav li cas?
Tsuas yog mus ntsib koj lub khw muag khoom kho mob hauv zos. Yog tias koj muaj tus ncej koj xav hloov dua siab tshiab, nqa nrog koj. Los yog cov khw feem ntau muaj ntau yam looj tsom iav los xaiv los ntawm. Thaum koj tau txiav txim siab qhia rau tus kws kho qhov muag koj xav tau cov tshuaj tsom iav tsom iav
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