Ukuziphatha kweekati kunokuba yinto ebambekayo, kangangokuba ezinye izinto abazenzayo azenzi ngqondo. Ngoku isifundo sipapashwe kwijenali Iinkqubo zeRoyal Society B: iiSayensi zebhayiloji, icebisa ukuba ezi feline zincinci, kunye nezinye izilwanyana ezanyisayo ezifana nezinja okanye iihedgehogs, zinokubona izinto ezingabonakaliyo kwiliso lomntu; Oko kukuthi, banako ukubona kwi-ultraviolet.
Ukumangalisa, kunene? Mhlawumbi yiloo nto maxa wambi beziphethe kakubi kangaka.
Amehlo ethu abona kuphela into eyaziwa ngokuba yi "spectrum yokukhanya ebonakalayo", ukusuka kubomvu ukuya ku-violet. Kodwa ngaphantsi kwalo mbala ngumbala we-ultraviolet, onokufunyanwa kuphela zizilwanyana ezithile. Amehlo akho alungele ukuhambisa ubude be-ultraviolet, ngokuququzelela oku kukhanya ukufikelela kwi-retina kwaye ngaloo ndlela kuvelise amandla ombane kwingqondo, apho ulwazi luya kwenziwa khona.
Obu buchule bunokuba luncedo kakhulu kwezo zilwanyana zitya ezinye, njengeekati. Ngombulelo kuyo, banokufumana umkhondo womchamo, kokubini kumalungu osapho kunye nakwezinye iisampulu, kwaye ngenxa yoko banolawulo ngakumbi kummandla wabo.
Umnqweno okhutshwe kolu phando kwaye lowo utsalela ingqalelo enamandla koku kulandelayo: ukukwazi ukubona kwi-ultraviolet kunokwenzeka ukuba ubone izinto esingaziboniyo, kwaye udlale nabo okanye ubasukele. Ukuba unayo ikati ethanda ukwenza izinto ezingaqhelekanga, ngoku singafumana umbono wokuba kutheni besenza izinto abazenzayo.
Ngaphandle kwamathandabuzo, olu phononongo luya kusinyanzela ukuba sizibone ezi zilwanyana zinoboya ngendlela eyahlukileyo, ngokuziqonda ngakumbi nangakumbiNgaba awucingi Kwaye, mhlawumbi, zininzi izinto ekusafuneka sizifumene.