Ukuziphatha kwekati kuyathakazelisa futhi ngezinye izikhathi kuyaxaka. Kunezikhathi lapho la makati amancane abonakala ebuka noma esabela ezintweni abanikazi bawo abangaziboni. Lokhu bekulokhu kuyindaba yokuqagela isikhathi eside, kodwa manje a ukutadisha enyatheliswa umagazini Izinqubo zeRoyal Society B uye wasikisela ukuthi amakati, kanye nezinye izilwane ezincelisayo njengezinja noma ama-hedgehog, zinekhono lokubona i-ultraviolet (UV), uhlobo lokukhanya olungabonakali kubantu.
Lokhu okutholwe okumangalisayo kungase kuchaze ukuthi kungani amakati ngezinye izikhathi eziphatha ngendlela eyinqaba, edlala noma ejaha izinto okubonakala zingekho kithi.
Kuyini ukukhanya kwe-ultraviolet?
Abantu bangabona kuphela okungaphakathi i-spectrum yokukhanya ebonakalayo, okusukela kokubomvu kuye koluhlaza okwesibhakabhaka. Ngaphandle kwalolu hlu, ku-spectrum ye-electromagnetic, kunokukhanya kwe-ultraviolet, okunobude beza obufushane kunokukhanya okubonakalayo futhi engabonakali kubantu. Kodwa-ke, amakati nezinye izilwane, njengezinja, ama-ferrets namagundane, ziye zavela ngendlela yokuthi amehlo azo avumele lokhu kukhanya kwe-UV ukuthi kufinyelele ku-retina yawo.
Le nqubo iyathakazelisa: amehlo akho ashintshwa ngendlela evumela ukuthi imisebe ye-UV ingene, ekhiqiza ukukhanya. umfutho kagesi oluya ebuchosheni futhi lucutshungulwe njengengxenye yombono wakho. Lokhu kusho ukuthi bangabona imininingwane ekhethekile ezintweni, amaphethini okukhanya angabonakali kithi, noma ngisho nemizila yomchamo ekhanya ngaphansi kokukhanya kwe-ultraviolet.
Ukusebenziseka kombono we-UV emakati
Kusilwane esizingelayo esingokwemvelo njengekati, ukukwazi ukubona imisebe ye-ultraviolet kune izinzuzo ezisobala. Amakati angase alandele imizila yomchamo evela kwezinye izilwane noma amanye amakati ukuze athole noma amake indawo. Ukwengeza, bangakwazi ukuhlonza imininingwane endaweni abahlala kuyo abantu abangayiboni, njengamaphethini abamba ukukhanya ezintweni ezithile, amaqabunga, noma ngisho nezilwane ezifihliwe.
Kungenxa yalesi sizathu ukuthi amakati cishe aziphatha ngendlela emangalisayo lapho ebhekene nezinto ezivamile kithi, njengephepha noma izindwangu, ezingase zihlangane nokukhanya kwe-UV ngezindlela eziwamangazayo.
Ukuziphatha Okungajwayelekile: Yini Amakati Ayibonayo?
Uma uke walibona ikati lakho ligqolozele emkhathini, linyakazisa izidladla zalo njengokungathi lizingela okuthile, noma lijaha “lutho,” cishe lalibona into ongayiboni. Lokhu kuziphatha kungachazwa ngenxa yekhono layo lokubona imisebe ye-UV. Abacwaningi abanjengoRonald Douglas noGlen Jeffrey babonisa ukuthi kithina into elula engaphili, njengesiqeshana sengubo noma udonga, kubo kungaba ukukhipha amaphethini okukhanya noma amandla abonakala ngaphansi kokukhanya kwe-ultraviolet kuphela.
Ngokungeziwe emizileni yomchamo noma izimpawu zendawo, amakati angase abone izinambuzane ezincane noma izinhlayiya ezimisiwe ezingabonakali ngeso lomuntu. Lokhu kuziphatha ekuqaleni kubonakala kungenangqondo, kodwa ngokwazi ukuthi la makati anombono othuthukisiwe, singawuqonda kangcono umhlaba wawo obonakalayo omangalisayo.
Ukuqhathanisa nombono womuntu
Amakati anombono ohluke kakhulu kunabantu. Ngenkathi abantu benayo izinhlobo ezintathu zamaseli e-cone Abophezelekile ekutholeni umbala (obomvu, oluhlaza okotshani noluhlaza okwesibhakabhaka), amakati awanayo enye yalezi zigaxa, okusho ukuthi anombono olinganiselwe uma kuziwa ngemibala. Nokho, lokhu kulinganiselwa kuqedwa ikhono layo lokubona ebumnyameni futhi, njengoba sesishilo, ikhono layo lokubona ukukhanya kwe-ultraviolet.
Ngaphezu kwalokho, i insimu yombono amakati makhulu kunabantu, afinyelela ku-200 degrees uma kuqhathaniswa ne-180 kubantu. Lokhu kuzivumela ukuba ziqaphele kangcono indawo ezizungezile, okubalulekile emakhonweni azo okuzingela.
Kubalulekile ukuqaphela ukuthi, nakuba abantu bekwazi ukubona kangcono phakathi nosuku, amakati anenani elikhulu lamaseli kuyi-retina ebizwa ngokuthi. imisele, okubavumela ukuthi babone ezimeni eziphansi zokukhanya. Ukuhlanganisa leli qiniso nombono wabo we-ultraviolet, kungashiwo ukuthi amakati abona nge-spectrum ehluke ngokuphelele kuneyethu.
Ngaphandle kokungabaza, ukutadisha ukubona kwe-feline kanye nekhono lazo lokubona lokho okungabonakali kithi kusenza sicabange kabusha lokho amakati ethu angase abhekane nakho ekuphileni kwawo kwansuku zonke, sandise ukuqonda kwethu izwe eliwazungezile.
Kuyathakazelisa ukucabanga ukuthi lezi zilwane ezincane ezidla ezinye ziyakwazi ukufinyelela emhlabeni obonakalayo ohluke ngokuphelele kowethu. Mhlawumbe ngokuzayo lapho ubona ikati lakho ligqolozele emkhathini, ngeke lingabi nalutho njengoba libonakala.