Noma yimuphi umuntu ozitholile isilwane esinezinyosi ezine ezinezinyosi, nsuku zonke angena ezinyangeni zakhe ezihlakaniphile, ezizinikele. Baqonda cishe yonke into, baveze injabulo noma ukudabuka, kodwa abakwazi ukutshela lutho kunkosikazi. Yiziphi izinqubo ezenzeka ekhanda labo? Ngabe imbala ibona kanjani izwe lethu elizungezile? Uma ufunda lesi sihloko, kusho ukuthi nawe ube nesithakazelo kule mibuzo kaningi. Sekuyisikhathi eside ososayensi befunda izinja, kanti ezinye zezinto ezitholakala ngenxa yokuhlangenwe nakho okude, ngoba abantu abaningi bayobe bengalindelekile.
Inja ibukeka kangaki?
Muva nje, saqinisekiswa ukuthi izinja zibona umhlaba njengomnyama nomhlophe. Lo mbono wawuyiphutha. Umbono wombala wezilwane zethu ezifuywayo uhlukile kubantu, kodwa namanje abakwazi ukubizwa ngokuthi imbala-yimpumputhe. Kungenxa yokuthi lezi zilwane zinesakhiwo esibhekene naso. Ku-retina kunezigaxa ezikhethekile ezibhekene nokuzwela kombala. Isidalwa ngasinye esiphilayo siyisipesheli. Labo ababona umbala obomvu, abangani bethu abanezintambo ezine abakwenzi. Umthunzi ophuzi ophuzi obomvu obomvu, ungadideka. Futhi ingubo eluhlaza okwesibhakabhaka oluhlaza okwesibhakabhaka izinja ngokujwayelekile ingase ibonakale njengephepha elimhlophe.
Ingabe izinja zibona ebumnyameni?
Ososayensi bezilwane zethu ezifuywayo ezinemilenze ezine kuthiwa yizilwane ezidlulayo, eziqondiswe kahle kokubili emini nasebusuku obumnyama. Izinti ezikhanyayo zithuthukisiwe kangcono kuzo kunabantu. Lokhu kuvumela izinja ukuthi zihlukanise ama-shadow shades amaningi. Ngemva kokushona kwelanga, abaningi bethu aboni lutho ngaphandle kwe-flashlight, kodwa izinja ziyaqhubeka zizizwa zikhululekile. Kubonakala ukuthi ebusuku ebusuku amehlo abo angama-3 noma ama-4 angcono kunabantu. I-retina yabamehlo bethu abafundi ihlukaniswe imikhakha. Umkhakha ophansi uthatha ukukhanya okwedlulele, okwenza ukuba umnikazi walo abone kahle ekukhanyeni okukhulu. Futhi umkhakha ophezulu uhlelwe ukuze uqinise umbono ebusuku.
Izinja ziyizilwane ezidliwayo, futhi kubo kubaluleke kakhulu ukucacisa into yokuzingela nganoma isiphi isikhathi sosuku. Bamba kangcono ukukhomba okuhambayo kunokuthile okumilayo. Lezi zilwane ziyakwazi ukubona ukunyakaza kwakho kude namamitha angu-800-900. Kodwa uma ihloswe lifihliwe, umlindi omlenze womine amane uzobona amamitha kuphela kusuka ku-600. Yingakho umuntu ophunyukayo azobona ngokushesha izinja njengento yokuzingela.
Izinja zibona kanjani ebangeni elikude? Kuye kwafakazelwa isipiliyoni esiseduze nento yezinja kubonakala kungacacile. Kodwa abantu bangagxila kalula kwizihloko eziseduze kakhulu. Abafowethu abancane abambalwa, njengoba abanye bacabanga. Banoba ne-farsightedness encane (mayelana ne-0.5 diopters). Omunye umehluko phakathi kwezinja nabantu ukuthi iso lomuntu lise-axis efanayo, futhi yilapha-le migqa ihlukanisa kancane ezinhlangothini, cishe ama-degrees angu-20. Izibalo ezicashunwe zixhomeke kakhulu ekuzalweni kwesilwane, isakhiwo se-skull ezilwaneni ezahlukene singahluka kakhulu. Qhathanisa, isibonelo, inhloko ye- pug , i-Pekingese nomalusi waseJalimane . Kodwa kunoma yikuphi, insimu yombono yalezi zilwane kuyoba yinto engaphezu kwalokho esinakho nawe. Izinja zethu zinesithombe esiphelele hhayi nje kuphela kulokho abakubonayo ngamehlo abo, kodwa ngezindlela eziningi nazo zixhomeke emqondweni wephunga nokuzwa.
Umbuzo uwukuthi, izinja zibona umbala, sesivele sibheke. Futhi ngumuphi umfanekiso abawabona ku-TV? Amamukeli wethu wethelevishini aklanyelwe abantu. Isikali sabo sokulinganisa sinjalo ukuthi lezi zilwane azikwazi ukubuka isithombe esivamile esikrinini (izinja akufanele zibe ngaphansi kwama-HZ angu-80). Esikhundleni se-movie, i-Bobics ne-Balls ibona i-melteshenie eyodwa. Kodwa ama-TV amasha anesilinganiso se-Hz ka-100 Hz yabafowethu abancinci angaba nesithakazelo. ENtshonalanga, waze waqala ukudubula amathrekhi akhethekile ezinkomo ezifuywayo