Ulusu oluqhelekileyo lunamandla okufunxa ukukhanya ukukhusela amalungu kunye nezicubu emzimbeni kumonakalo wokukhanya. Ukukwazi kokukhanya ukungena kwizicubu zomntu kuhambelana ngokusondeleyo nobude bayo kunye nokwakheka kwezicubu zesikhumba. Ngokuqhelekileyo, okukhona ubude bamaza bufutshane, kokukhona kungabi nzulu ukungena kwesikhumba. Izicubu zesikhumba zithatha ukukhanya ngokukhetha okucacileyo. Ngokomzekelo, i-keratinocytes kwi-stratum corneum inokuthatha inani elikhulu lemitha ye-ultraviolet yamaza amafutshane (i-wavelength yi-180 ~ 280nm), kunye neeseli ze-spinous kwi-spinous layer kunye ne-melanocytes kwi-basal layer ithatha imisebe ye-ultraviolet emide. ubude bobude ngama-320 nm~400nm). Izicubu zolusu zifunxa amaza okukhanya ahlukeneyo ngokwahlukileyo, kwaye uninzi lwemitha ye-ultraviolet ifunxwa yi-epidermis. Njengoko i-wavelength isanda, iqondo lokungena kokukhanya liyatshintsha. Imitha ye-infrared kufuphi nomatshini wokukhanya obomvu ingena kweyona migangatho yolusu, kodwa ifunxwe lusu. I-infrared ye-long-wave (ubude be-waveleng yi-15 ~ 400μm) ingena kakubi kakhulu, kwaye ininzi yayo ifunxwa yi-epidermis.
Oku kungasentla sisiseko sethiyori ukuba iuhlalutyi lwesikhumbaingasetyenziselwa ukubona iingxaki ezinzulu zolusu. Iuhlalutyi lwesikhumbaisebenzisa i-spectra eyahlukileyo (i-RGB, ukukhanya kwe-Cross-polarized, ukukhanya kwe-Parallel-polarized, ukukhanya kwe-UV kunye nokukhanya kwe-Wood) ukudala amaza ahlukeneyo amaza okufumana iingxaki zesikhumba ukusuka kumphezulu ukuya kumaleko anzulu, ngoko ke imibimbi, imithambo yesigcawu, iipores ezinkulu, amabala angaphezulu, amabala anzulu, umbala, umbala, ukudumba, iiporphyrins kunye nezinye iingxaki zolusu zonke zinokubonwa ngokuhlalutya ulusu.
Ixesha lokuposa: Apr-12-2022
