Ulusu oluqhelekileyo lunamandla okufumana ukukhanya ukukhusela amacandelo kunye nezicubu emzimbeni ukusuka kumonakalo wokukhanya. Ukwazi kokukhanya ukufaka izicubu zabantu kunxulumene ngokusondeleyo ne-wavelength yayo kunye nolwakhiwo lwezicubu zesikhumba. Ngokubanzi, okufutshane i-wavelength ye-waverangth, i-cenflid ukungena kulusu. I-tissule yolusu iwisa ukukhanya ngokukhethwayo. Umzekelo, i-keratinocytes kwi-stratum inokuthi ifumane isixa esikhulu se-raysraviolet (wavelength), kunye neeseli ezingama-340n kwi-rays kwi-onraviolet rays (i-wavelength). I-tissule yolusu ifumana amaza ahlukeneyo okukhanya ngokwahlukileyo, kwaye uninzi lwee-rays ze-ultraviolet ziyangeniswa yi-epidermis. Njengoko i-wavelength yandiswa, inqanaba lokukhanya kokukhanya litshintsha. I-infrared imitha kufutshane nomatshini obomvu obomvu ungene kwiyona nto inzulu yolusu, kodwa ungenalolusu. I-infrared yexesha elide (i-wavelength yi-15 ~ 400μm) ingena kakubi, kwaye uninzi lwayo luthathwe yi-epidermis.
Oku kungasentla sisiseko sethiyori ukubaUhlalutyo lolusuinokusetyenziselwa ukufumana iingxaki zolusu olunzulu lwesikhumba. IUhlalutyo lolusuSebenzisa i-Spectra (i-RGB, ukukhanya kwe-ross-croding, ukukhanya kwe-Uv kunye nokukhanya kwe-Uv kunye neendawo ezinamachaphaza, amabala amakhulu, i-poredyrins, i-porphyrins, i-porphyria
Ixesha leposi: APR-12 ukuya ku-1222
