UMary Allen
Iinyoka zibona imithombo yobushushu ngamehlo azo. Iintaka ezidla inyama ziyakwazi ukubona iimpuku kumgama oziimitha ezingama-500. Iimpukane zibona ngokukhawuleza kunathi. Umfanekiso kamabonakude ubonakala kubo ngokucotha, kuba bekwazi ukwenza imifanekiso emininzi ngomzuzwana kunathi bantu. Umbono wazo zonke izilwanyana ulungelelaniswe nemekobume kunye nokuziphatha, kuquka izilwanyana zethu zasekhaya. Ngandlel’ ithile bangaphezulu kunathi, kwezinye, sinokwenza ngcono.
Izinja zijonge ngokusondeleyo kwaye aziyiboni eluhlaza
Amaqabane ethu anemilenze emine aneentonga ezininzi emehlweni abo kunathi bantu. Oku kubavumela ukuba babone kakuhle naxa kukukhanya okuphantsi. Ukuba kukho isithokothoko, nabo baziva ebumnyameni. Ngokungafaniyo nabantu abasempilweni, izinja aziboni kufutshane. Inja ayikwazi ukubona nantoni na engahambiyo kwaye ingaphezulu kweemitha ezintandathu ukusuka kuwe. Abantu, kwelinye icala, banokubona ngokucacileyo nakumgama weemitha ezingama-20.
Umbono wombala awuzange udibane nezinja; Nangona kunjalo, njengoko kudla kucingwa, aziboni mbala. Izinja ziyakwazi ukubona imibala ethile, kodwa kungekhona ezininzi ezininzi njengabantu. Siyakwazi ukububona ubude bamaza kuluhlu olubomvu, oluluhlaza, noluzuba ngaloo ndlela malunga nemibala engama-200. Izinja zineentlobo ezimbini zeecones kwaye ngoko ke ubukhulu becala ziqaphela iiblues, purples, yellows, and browns. Amathoni abomvu enja abonakala etyheli, ayiqapheli luhlaza kwaphela.
Iikati zineSikhulisi sokuKhanya esiSele
Amehlo eekati zethu zasekhaya aqhelaniswe kakuhle ngakumbi ukuze abone ebumnyameni. Abafundi bayo banokunwenwa kakhulu, nto leyo ethetha ukuba ukukhanya okwaneleyo kusenokufikelela kwiretina. Ngasemva kweretina kukho umaleko okhanyayo, i-tapetum, uhlobo lwesikhanyisi sokukhanya esishiyekileyo esithumela ukukhanya kwiretina kwakhona. Oku kuthetha ukuba ukukhanya okuvela enyangeni kwanele ukuba bazingele ngempumelelo. Izinti ezininzi zikwavumela ukuba zibone ngcono iintshukumo ezikhawulezayo. Singabona iintshukumo ezicothayo ngcono kunekati. Indlela esijonga ngayo imibala nayo iyahluka ngakumbi; Kwingwe yasekhaya, ihlabathi libonakala liluhlaza okwesibhakabhaka natyheli.
Amahashe Akayithandi Imibala Emnyama
Amehlo ehashe abekwe emacaleni entloko. Ngenxa yoko, intsimi yokujonga igubungela i-radius enkulu kakhulu - inombono ophantse ujikeleze. Kwakhona baqaphela iintshaba eziza ngasemva kwangethuba. Kukwanceda ukuba babone kude kwaye babone bhetele xa bekude kunangaphambili. Ukuba ufuna ukubona into ngokucacileyo ngakumbi, kufuneka ujike intloko yakho ukuze ukwazi ukujonga loo nto ngamehlo omabini ngaxeshanye. Isilwanyana sifuna ixesha elithile ukwenza oku, kodwa oku akusiyo into engalunganga. Ukuqaphela ukunyakaza kuye kwahlala kubaluleke kakhulu kwisilwanyana esibalekayo kunokugxila kwizinto ezimileyo.
Umbono wombala kumahashe awukaphononongwa ngokupheleleyo. Kukholelwa ukuba banokuhlula ubukhulu becala phakathi komthubi noluhlaza okwesibhakabhaka. Abanakana nobomvu kunye noorenji. Imibala emnyama ibonakala iyingozi ngakumbi kunemibala ekhanyayo; imibala elula kakhulu iyamfamekisa. Njengeekati, amahashe anomaleko okhethekileyo obonakalisayo emehlweni aphucula kakhulu umbono ebumnyameni. Abazithandi iinguqu ezibukhali ukusuka ekukhanyeni ukuya kumnyama. Bandula ke babe ziimfama okwexeshana.
Imivundla ebona kude kunye neBomvu-Buluhlaza-imfama
Kumvundla, njengesilwanyana esilixhoba, umbono olungileyo macala onke kubaluleke kakhulu kunombono obukhali. Iliso ngalinye linokugubungela indawo emalunga ne-170 degrees. Nangona kunjalo, banendawo eyi-10-degree eyimfama phambi kobuso babo; kodwa inokubona indawo ngevumba kunye nokubamba.
Ngorhatya nakude, abo banendlebe babona kakuhle kakhulu kwaye ngoko bakhawuleza bazazi iintshaba zabo. Nangona kunjalo, babona izinto ezikufutshane nabo zimfiliba. Ngoko ke, imivundla ithanda ukubabona abantu ngevumba okanye ngelizwi kunenkangeleko yabo. Iindlebe ezineendlebe ezinde nazo azinayo i-receptor, nto leyo eyenza ukuba imibala yazo ingaboni kakuhle. Abanayo i-cone receptor ye-shades ebomvu, kwaye abanako ukwahlula lo mbala kuluhlaza.