Ukukhanya kungachazwa ngeendlela ezininzi.
I-photon, uhlobo lwamaza, isuntswana, i-frequency ye-electromagnetic. Ukukhanya kusebenza njengesuntswana ebonakalayo kunye ne-wave.
Oko sikucinga njengokukhanya yinxalenye encinci ye-electromagnetic spectrum eyaziwa ngokuba kukukhanya okubonakalayo komntu, apho iiseli ezikwimehlo lomntu zivavanyeka khona. Uninzi lwamehlo ezilwanyana luvavanyeka kuluhlu olufanayo.
Izinambuzane, iintaka, kwaneekati nezinja zinokubona ukukhanya kwe-UV okuncinci, ngelixa ezinye izilwanyana zinokubona ukukhanya kwe-infrared; iintlanzi, iinyoka, kwaneengcongconi!
Ingqondo yezilwanyana ezincancisayo itolika/ichaza ukukhanya kube 'ngumbala'. Ubude bomda okanye ubuninzi bokukhanya yiyo echaza umbala esiwubonayo. Ubude bomda obude bubonakala bubomvu ngelixa ubude bomda obufutshane bubonakala buluhlaza okwesibhakabhaka.
Ngoko ke umbala awungowomntu ongaphakathi kwindalo iphela, kodwa yindalo yeengqondo zethu. Umele iqhekeza elincinci kuphela le-full electromagnetic spectrum. Yi-photon nje kwi-frequency ethile.
Uhlobo olusisiseko lokukhanya ngumjelo wee-photon, ezijikeleza kubude obuthile bokukhanya.