Okwangoku, izibane zendlela zibomvu, ziluhlaza kwaye zimthubi. Ubomvu uthetha ukuthi yima, uluhlaza uthetha ukuthi hamba, umthubi uthetha ukuthi linda (oko kukuthi lungiselela). Kodwa kudala, kwakukho imibala emibini kuphela: obomvu noluhlaza. Njengoko umgaqo-nkqubo wokuguqulwa kweendlela wawusiya ugqibelela ngakumbi, kongezwa omnye umbala kamva, umthubi; Emva koko kongezwa omnye umbala. Ukongeza, ukwanda kombala kunxulumene kakhulu nendlela abantu abasabela ngayo ngokwengqondo kunye nokwakheka kombono.
I-retina yomntu ineeseli ze-photoreceptor ezimile okwentonga kunye neendidi ezintathu zeeseli ze-photoreceptor ezimile okwekhowuni. Iiseli ze-photoreceptor ezimile okwentonga zinovelwano kakhulu ekukhanyeni okumthubi, ngelixa iintlobo ezintathu zeeseli ze-photoreceptor ezimile okwekhowuni zinovelwano ekukhanyeni okubomvu, ekukhanyeni okuluhlaza kunye nokukhanya okuluhlaza okwesibhakabhaka ngokulandelanayo. Ukongeza, ulwakhiwo lokubona kwabantu lwenza kube lula ukuba abantu bahlukanise phakathi kobomvu noluhlaza. Nangona umthubi noluhlaza okwesibhakabhaka kungenzima ukwahlulahlula, kuba iiseli ze-photoreceptor ezikwibhola yeliso azinavelwano kangako ekukhanyeni okuluhlaza okwesibhakabhaka, ubomvu noluhlaza zikhethwa njengemibala yesibane.
Ngokuphathelele umthombo wombala wezibane zetrafikhi, kukwakho nesizathu esingqongqo ngakumbi, oko kukuthi, ngokwemigaqo ye-physical optics, isibane esibomvu sinobude obude kakhulu kunye nokudluliselwa okunamandla, okunomtsalane ngakumbi kunezinye iimpawu. Ke ngoko, simiselwe njengombala wesignali yetrafikhi yetrafikhi. Ngokuphathelele ukusetyenziswa koluhlaza njengombala wesignali yetrafikhi, kungenxa yokuba umahluko phakathi koluhlaza nobomvu mkhulu kwaye kulula ukwahlula, kwaye i-coefficient yemibala engabonakaliyo yale mibala mibini iphantsi.
Ukongeza, kukho nezinye izinto ngaphandle kwezi zizathu zingasentla. Ngenxa yokuba umbala ngokwawo unentsingiselo efuziselayo, intsingiselo yombala ngamnye ineempawu zayo. Umzekelo, ubomvu bunika abantu uthando olunamandla okanye imvakalelo enamandla, kulandele umthubi. Bubenza abantu bazive belumkile. Ke ngoko, bunokubekwa njengemibala yezibane zendlela ebomvu netyheli enentsingiselo yokuthintela izithuthi kunye nengozi. Uluhlaza luthetha ukuzola nokuzola.
Kwaye uluhlaza lunefuthe elithile lokunciphisa ukudinwa kwamehlo. Ukuba ufunda iincwadi okanye udlala ikhompyutha ixesha elide, amehlo akho aya kuziva ediniwe okanye ediniwe kancinci. Ngeli xesha, ukuba ujika amehlo akho kwizityalo okanye izinto eziluhlaza, amehlo akho aya kuba nemvakalelo yokuthuthuzela engalindelekanga. Ke ngoko, kufanelekile ukusebenzisa uluhlaza njengombala wesignali yendlela onentsingiselo yendlela.
Njengoko kukhankanyiwe apha ngasentla, umbala wesignali yendlela yokuqala awumiselwanga ngokungacwangciswanga, kwaye kukho isizathu esithile. Ngenxa yoko, abantu basebenzisa ubomvu (omele ingozi), umthubi (omele isilumkiso sangaphambili) kunye noluhlaza (omele ukhuseleko) njengemibala yesignali yendlela. Ngoku ikwaqhubeka nokusebenzisa nokuya kwinkqubo engcono yomyalelo wendlela.
Ixesha lokuthumela: Agasti-16-2022
