Konke okudingeka ukwazi mayelana nokukhetha isambulela esifanele esilwa ne-UV
Isambulela selanga siyinto ebalulekile ehlobo lethu, ikakhulukazi kubantu abesaba ukushiswa yilanga, kubaluleke kakhulu ukukhetha isambulela selanga sekhwalithi enhle. Kodwa-ke, amasambulela awakhiwe ngezindwangu ezahlukahlukene kuphela, kodwa futhi afika ngemibala ehlukahlukene futhi anemiphumela ehlukene kakhulu yokuvikela ilanga. Ngakho-ke yisiphi isambulela sombala esihle? Ungayikhetha kanjani isambulela sokuvikela ilanga kakhulu? Okulandelayo, ngizokunikeza ukuhlaziywa kwesayensi kokuthi yisiphi isambulela selanga sombala esivikela ilanga kakhulu, futhi ngabelane ngamathiphu athile okuthenga isambulela esigcwele ilanga, bheka.
Ngokusho kwemiphumela yokuhlolwa kwe-Chinese Academy of Measurement Science, umbala wendwangu nawo udlala indima ekuvinjweni kwelanga yi-UV. Uma kumnyama, izinga lokudluliswa kwe-UV lincane futhi ukusebenza kokuvikela i-UV kuyanda. Ngaphansi kwezimo ezifanayo, lapho umbala wendwangu umnyama, ukusebenza kokumelana ne-UV kungcono. Uma kuqhathaniswa, umnyama
Uma kuqhathaniswa, umbala omnyama, onsundu, oluhlaza okotshani kunoluhlaza okwesibhakabhaka, opinki okhanyayo, ophuzi okhanyayo, njll. umphumela we-UV ophansi muhle.
Isambulela selanga indlela yokukhetha isivikelo selanga kakhulu
Izambulela ezinkulu zingavimba cishe ama-70% emisebe ye-ultraviolet, kodwa azikwazi ukuhlukanisa isici esibonakalayo ngaphandle komugqa.
Izambulela ezijwayelekile zingavimba nemisebe eminingi ye-UV, njengoba kushiwo ngenhla, uma umbala wesambulela umnyama, kungcono. Kodwa-ke, uma ukhetha ilanga elikhulu elinesembozo sokuvikela i-UV, udinga ukucabangela izinto ezahlukahlukene, njengentengo, izinga lokuvikela. Indwangu yesambulela nokunye, ukuze ukwazi ukuthenga isambulela esithembekile.
Bheka intengo
Ezinye izambulela zingamboza imisebe yelanga kuphela, kanti imisebe ye-ultraviolet isazongena endwangu, kuphela ngemva kokwelashwa nge-sunscreen coating ukuze ibe nomphumela wokulwa ne-UV. Ngakho-ke akusikho isambulela esizokwazi ukuvikela i-UV. Isambulela esifanelekile, esivikela i-UV, sibiza okungenani ama-yuan angu-20. Ngakho-ke sebenzisa amadola ambalwa ukuthenga isambulela, ukusebenza kahle kwesivikelo se-UV kuyangabazeka.
Bheka izinga lokuvikelwa
Kuphela uma inani lesici sokuvikela i-UV lingaphezu kuka-30, okungukuthi i-UPF30+, kanye nesilinganiso sokudlulisa i-UV samagagasi amade singaphansi kuka-5%, kungabizwa ngokuthi imikhiqizo yokuvikela i-UV; futhi uma i-UPF>50, ikhombisa ukuthi umkhiqizo unokuvikelwa kwe-UV okuhle kakhulu, uphawu lwezinga lokuvikela i-UPF50+. Uma inani le-UPF likhulu, kulapho ukusebenza kokuvikelwa kwe-UV kuba ngcono khona.
Isikhathi sokuthunyelwe: Septhemba-23-2022