Malunga nokukhanya kwe-UV

1. Okokuqala, ngaba uyaqonda ukuba yintoni ukukhanya kwe-UV? Kwenza ntoni?

I-UV sisifinyezo seMisebe ye-Ultraviolet, okanye ukukhanya kwe-ultraviolet, enobubanzi bobude be-100 ukuya kwi-400 nm, engamaza e-electromagnetic phakathi kwe-X-rays kunye nokukhanya okubonakalayo. Oku kuthetha ukuba olu kukhanya lukukhanya kwamandla okungena kwaye luvelisa ubushushu emzimbeni.

Umonakalo wokukhanya kwelanga eluswini lomntu uvela kakhulu kwi-ultraviolet A (UVA) kunye ne-ultraviolet B (UVB). I-UVA yeyamaza amade, isebenza kumaleko onzulu eluswini, isenzo sihamba kancinci, kodwa inokubangela ukuba kube mnyama kube kanye. I-UVB yeyamaza aphakathi, isebenza kumphezulu wesikhumba, isiphumo esikhawulezayo. Ingavuselela ulusu lwe-keratinocytes, ukuze imithambo yegazi ikhule, inyuse ukuhamba kwegazi, i-initial iya kuba bomvu, ize itshintshe kancinci ibe mdaka. Ngoko ke, ngamafutshane, i-UVB ikhokelela "ekubeni ilanga libomvu ngakumbi" kwaye i-UVA ikhokelela "ekubeni ilanga limnyama ngakumbi".

Isiphumo: Ngokuqhelekileyo isetyenziswa kwezonyango ukunyanga ubuhlanya obumhlophe, oko kuthetha ukuba ngolu kukhanya kwe-ultraviolet, ukusebenza ngokuthe ngqo kwebala elimhlophe phantsi kolusu i-enzyme ye-tyrosine kukhuthaza ukuveliswa kwe-melanin, ulusu olumhlophe lube mnyama.

Singafumana izixhobo ezininzi ezikhanyayo ze-UV kwi-intanethi, singazama ukukhangela.

2. Yintoni indima yabanye abavelisi ekusebenziseni ukukhanya kwe-UV ku umatshini wokuhlaziya ulusu?

Nokuba ukukhanya kwe-UV kuyayonakalisa ulusu okanye akunjalo, amanye amashishini akwimarike asebenzisa ukukhanya kwe-UV kwisixhobo sokufumanisa ulusu, ezi zinto zisetyenziselwa ukujonga amabala kunye neembobo (umphezulu wolusu). Ezi zinto zimbini zezona zinto zincinci kakhulu kwiprojekthi yokufumanisa, kutheni? Indawo yombala wolusu inokufumaneka ngeyethu. Umatshini woHlalutyo lweZibuko zoMlingo, banokuyifumana indawo, kutheni kufuneka isixhobo ukuze basibone, njengesixhoboIsixhobo Sokuhlalutya Ulususicinga ukuba kunentsingiselo ngakumbi ukubona ibala lombala phantsi kwederm.