Malunga nokukhanya kweUV

1. Okokuqala, ngaba uyakuqonda ukuba yintoni ukukhanya kwe-UV? Wenza ntoni?

I-UV sisishunqulelo seMitha ye-Ultraviolet, okanye ukukhanya kwe-ultraviolet, kunye noluhlu lwe-wavelength ye-100 ukuya kwi-400 nm, engamaza ombane we-electromagnetic phakathi kwe-X-reyi kunye nokukhanya okubonakalayo. Oku kuthetha ukuba oku kukhanya sisibane samandla esingena ngaphakathi kwaye sivelise ubushushu emzimbeni.

Umonakalo wokukhanya kwelanga eluswini lomntu ngokuyintloko uvela kwiultraviolet A (UVA) nakwiultraviolet B (UVB). I-UVA yeyamaza amaza, asebenza kumaleko anzulu wolusu, isenzo sicotha, kodwa sinokubangela ukuba kube mnyama okwexesha elinye. I-UVB yeyamaza aphakathi, esebenza kumphezulu wolusu, umphumo okhawulezayo. Iyakwazi ukuvuselela i-keratinocyte yesikhumba, ukwenzela ukuba imithwalo yegazi ivuleke, ikhulise ukuhamba kwegazi, i-original iya kuba bomvu, kwaye ngokukhawuleza ijika ibe mdaka. Ngoko, ngamafutshane, i-UVB ikhokelela "ekubomvu kwelanga" kwaye i-UVA ikhokelela "ebumnyameni belanga".

Isiphumo: Isetyenziswa ngokubanzi kunyango kunyango lwempambano emhlophe, oku kuthetha ukuba ngokuvezwa kokukhanya kwe-ultraviolet, ukusebenza ngokuthe ngqo kwendawo emhlophe phantsi kwe-skin tyrosine enzyme ikhuthaza ukuveliswa kwe-melanin, ulusu olumhlophe lube mnyama.

Sinokufumana uninzi lwezixhobo ezimhlophe zokukhanya kwe-UV kwi-Intanethi, sinokuzama ukukhangela.

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

Nokuba ukukhanya kwe-UV kulonakalisa ulusu okanye akunjalo, amanye amashishini kwimarike asebenzisa ukukhanya kwe-UV kwizinto zokubona ulusu zisetyenziswa ikakhulu ukujonga amabala ombala kunye neepores (umphezulu wolusu) ezi zinto zi-2 zingowona mxholo mncinci wobugcisa weprojekthi yobhaqo, ngoba? Indawo yombala wolusu inokufumaneka ngokwethu Umatshini wokuHlalutya iSipili soMlingo wesikhumba, banokufumana kwakhona indawo, kutheni kufuneka bafune isixhobo ukubhaqa, njengokoIsixhobo sokuHlalutya ulususicinga ukuba kunentsingiselo ngakumbi ukubona indawo yombala phantsi kwederm.