Ngokuqhelekileyo, abanikazi beekati ekukhangeleni banokumisela ukuba isilwanyana siyicinga. Umbuzo wendalo, ngaba kukho umehluko phakathi kombono womntu kunye nesilwanyana kunye neyiphi imibala ebonakalayo kumakati?
Umbono wemibala ayiyona ndlela yodwa yokufumana ulwazi olubonakalayo malunga nendalo, nangona kunjalo, kwimibala yiphi ihlabathi lekati elibonwayo-ukusuka kwimibandela efunwa rhoqo.
Inkqubo yombono ibandakanya ezi zilandelayo:
- Ukuqonda ukukhanya.
- Ukungakwazi ukuhamba.
- Ububanzi bendawo yokujonga.
- Ingqiqo yokujonga.
- Umbono wombala.
Kwiimpawu ezine zokuqala, ubona bekati bude ngaphezu kweempawu zabantu. Kodwa kwa kutshanje kwakukho umbuzo ovulekile ukuba iikati zibona umbala. Izazinzulu zikholelwa ukuba izilwanyana ezizingela ebusuku, ukubaluleka kombala akubalulekanga ekusindeni kwindlela yokuziphendukela kwemvelo, ngoko ke banako ukunciphisa amandla okujonga umbono.
Iimibala emininzi ibona iikati?
Ukuqwalaselwa kombala kudibanisa ii-cones, eziyi-photoreceptors ezifumaneka kwi-retina yeso. Kubantu, kukho iintlobo ezintathu ( eluhlaza , obomvu , obomvu) kwaye ngamnye unembopheleleko yokuqaphela umbala ofanelekileyo woluhlu. Izilwanyana ezininzi zinemihlobo emibini yeeponsi, kwaye ngoko ke ayiboni inxalenye yembalo, njengemibala. Uphando olutsha luye lwabonisa ukuba iikati zibona imibala ngokuhambelana nomgaqo ofana nomntu, kodwa umfanekiso unjengokuthi uhlanganiswe ngumoya, kunye nokunyuka okuphazamisayo kwimida, kwaye imibala ayifani ngokuhlukileyo.
Ukongezelela, imibala ethile ibonakala ngokuhlukileyo, umzekelo, obomvu bubonakala buhlaza. Kodwa uluhlu lwezinto ezahlukileyo ezibonakalayo eziluhlaza zilucebile kunabantu. Esi sisiphumo sokuguqula iikati ebomini kwiimeko eziphantsi zokukhanya.