Ngokuvamile, abanikazi bamakati abukeka banganquma ukuthi isilwane siyicabanga. Umbuzo wemvelo uwukuthi, ingabe kukhona umehluko phakathi kokubukwa komhlaba wesintu nesilwane nokuthi yimiphi imibala amakati ayibona?
Umbono wombala akuyona yodwa indlela yokuthola ulwazi olubukwayo mayelana nemvelo, noma kunjalo, ngumuphi umbala izwe lekati elibonwayo - kusuka emibuthanweni ebuzwa kakhulu.
Inqubo yombono ihlanganisa izigaba ezilandelayo:
- Ukuzwela ukukhanya.
- Ukungakwazi ukuhamba.
- Ibanga lomkhakha wokubuka.
- Umbono wokubona.
- Umbono wombala.
Ngezinkomba ezine zokuqala, ubuso bekati budlula izici zabantu. Kodwa kuze kube yamuva kwaba nombuzo ovulekile uma amakati abona umbala. Ososayensi bakholelwa ukuthi izilwane ezizingela ebusuku, ukuqashelwa kombala akubalulekile ekusindeni esikhathini sokuziphendukela kwemvelo, ngakho-ke banekhono elincishisiwe lokubona umbono.
Amakati ambalwa angabona?
Ukuze ukuqashelwa kombala kuhlangane nama-cones, okuyi-photoreceptors etholakala kwi-retina yeso. Kubantu, kunezinhlobo ezintathu ( oluhlaza , olubomvu , oluhlaza okwesibhakabhaka) futhi ngamunye unesibopho sokuqaphela umbala ofanele wobubanzi. Izilwane eziningi zinezinhlobo ezimbili zama-cones, ngakho-ke aziqondi ingxenye ye-spectrum, njenge-colorblinds. Ucwaningo lwakamuva lubonise ukuthi amakati abheka imibala ngokuvumelana nesimiso esifana nomuntu, kodwa isithombe sinjengokungathi sigcwele inkungu, futhi ukunyuka okufiphala emaphethelweni, futhi imibala ayifani nokugcwalisa.
Ngaphezu kwalokho, imibala eminye ivela ngendlela ehlukile, isibonelo, obomvu bubonakala buhlaza okwesibhakabhaka. Kodwa ububanzi bokuhlukanisa i-shadow shades bucebile kakhulu kunomuntu. Lona umphumela wokuguqula amakati empilweni eziphansi zokukhanya.