Mayelana nokukhanya kwe-UV

1. Okokuqala, uyaqonda ukuthi iyini i-UV light? Yenzani?

I-UV isifinyezo se-Ultraviolet Rays, noma ukukhanya kwe-ultraviolet, enobubanzi bamaza obungu-100 kuya ku-400 nm, okungamaza kagesi aphakathi kwe-X-ray nokukhanya okubonakalayo. Lokhu kusho ukuthi lokhu kukhanya kuyisibani samandla esingena futhi sikhiqize ukushisa emzimbeni.

Umonakalo wokukhanya kwelanga esikhumbeni somuntu uvela kakhulu ku-ultraviolet A (UVA) kanye ne-ultraviolet B (UVB). I-UVA ingeyegagasi elide, isebenza ongqimbeni olujulile lwesikhumba, isenzo sihamba kancane, kodwa ingabangela ukuba mnyama kanye kuphela. I-UVB ingeyegagasi eliphakathi nendawo, isebenza ebusweni besikhumba, umphumela osheshayo. Ingavuselela ama-keratinocyte esikhumba, ukuze imithambo yegazi ivuleke, ikhulise ukugeleza kwegazi, isiqalo sizoba bomvu, bese siphenduka kancane kancane sibe nsundu. Ngakho-ke, ngamafuphi, i-UVB iholela "ekubeni ilanga libomvu kakhulu" kanti i-UVA iholela "ekubeni ilanga limnyama kakhulu".

Umphumela: Ngokuvamile isetshenziswa kwezokwelapha ekwelapheni ukuhlanya okumhlophe, okusho ukuthi ngalokhu kuvezwa kokukhanya kwe-ultraviolet, ukusebenza okuqondile kwebala elimhlophe ngaphansi kwesikhumba i-enzyme ye-tyrosine kukhuthaza ukukhiqizwa kwe-melanin, isikhumba esimhlophe sibe mnyama.

Singathola izinsimbi eziningi ezikhanyayo ze-UV ezisebenza ngokukhanya kwe-UV ku-inthanethi, singazama ukusesha.

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

Kungakhathaliseki ukuthi ukukhanya kwe-UV kuyalimaza isikhumba noma cha, amanye amabhizinisi emakethe asebenzisa ukukhanya kwe-UV esikhumbeni, izinto ezisetshenziswa kakhulu ukubuka amabala ombala kanye nama-pores (ubuso besikhumba) lezi zinto ezimbili ziwukuqukethwe okuncane kakhulu kobuchwepheshe bephrojekthi yokuthola, kungani? Indawo yombala wesikhumba ingatholakala ngeyethu Umshini Wokuhlaziya Isikhumba Sesibuko Somlingo, bangathola nendawo, kungani kumele badinge ithuluzi ukuze balithole, njenge-Idivayisi Yokuhlaziya Isikhumbasicabanga ukuthi kunengqondo kakhulu ukubona indawo enemibala ngaphansi kwe-derm.