Mayelana nokukhanya kwe-UV

1. Okokuqala, uyakuqonda ukuthi yini ukukhanya kwe-UV? Lenzani?

I-UV isifushaniso seMisebe ye-Ultraviolet, noma ukukhanya kwe-ultraviolet, enobubanzi obungamaza obuyi-100 kuya ku-400 nm, okungamaza kazibuthe kagesi phakathi kwe-X ray nokukhanya okubonakalayo. Lokhu kusho ukuthi lokhu kukhanya kuwukukhanya kwamandla okungena ngaphakathi futhi kukhiqize ukushisa emzimbeni.

Ukulimala kokukhanya kwelanga esikhumbeni somuntu ngokuyinhloko kuvela emisebeni ye-ultraviolet A (UVA) ne-ultraviolet B (UVB). I-UVA ingeyegagasi elide, elisebenza ongqimbeni olujulile lwesikhumba, isenzo sihamba kancane, kodwa singabangela ukuba mnyama kwesikhathi esisodwa. I-UVB ingeyegagasi eliphakathi, elisebenza phezu kwesikhumba, umphumela osheshayo. Ingakwazi ukuvuselela ama-keratinocyte esikhumba, ukuze imithambo yegazi ivuleke, ikhulise ukugeleza kwegazi, eyokuqala izoba bomvu, bese iphenduka ibe nsundu kancane. Ngakho-ke, ngamafuphi, i-UVB iholela "ekukhanyeni kwelanga okubomvu" futhi i-UVA iholela "ekukhanyeni kwelanga".

Umphumela: Ngokuvamile isetshenziswa kwezokwelapha ekwelapheni ubuhlanya obumhlophe, okusho ukuthi ngalokhu kuvezwa kokukhanya kwe-ultraviolet, ukusebenza okuqondile kwendawo emhlophe ngaphansi kwe-enzyme ye-tyrosine yesikhumba kukhuthaza ukukhiqizwa kwe-melanin, isikhumba esimhlophe sibe mnyama.

Singathola izinsimbi eziningi ezimhlophe zokwelashwa kokukhanya kwe-UV ku-inthanethi, singazama ukusesha.

2. Ithini indima yabanye abakhiqizi ekusebenziseni ukukhanya kwe-UV ku umshini wokuhlaziya isikhumba?

Ukuthi ukukhanya kwe-UV kulimaza isikhumba noma cha, amanye amabhizinisi emakethe asebenzisa ukukhanya kwe-UV ezintweni zomtshina wesikhumba ezisetshenziswa kakhulu ukubuka amabala ombala nezimbotshana (isikhumba esingaphezulu) lezi zinto ezi-2 zingokuqukethwe kobuchwepheshe okuncane kakhulu kwephrojekthi yokuthola, ngani? Indawo yombala wesikhumba ingatholakala ngokwethu Umshini Wokuhlaziya Isikhumba Esiyizibuko Omlingo, bangakwazi futhi ukuthola indawo, kungani kufanele badinge ithuluzi ukuze bathole, njengoba aIdivayisi Yokuhlaziya Isikhumbasicabanga ukuthi kunengqondo kakhulu ukubona indawo yombala ngaphansi kwesikhumba.