Isithombe: Ukukhanyiswa yilanga eduze kweso lomuntu eliluhlaza-luhlaza okwesibhakabhaka-hazel

Isithombe sithwebula ukusondelana okumangalisayo kweso lomuntu, siguqule okuthile okujwayelekile kube indawo ecishe ibe yi-cosmic yokukhanya, umbala, nemininingwane. I-iris ibusa uhlaka, ikhipha imisebe eyinkimbinkimbi yegolide, eluhlaza okotshani, kanye nokusikisela okumpunga okuluhlaza okwesibhakabhaka, okufana nemisebe yelanga ephuma phakathi nendawo emnyama, engapheli. Emgogodleni wayo, umfundi uhlezi njengendingilizi eyiyinki efanelekile—ekhonjiswe endaweni eqondile ekhonjiwe ngaphansi kokuqina kokukhanya kwelanga okukhanyayo—okudala ukugqama okumangazayo ngokumelene nemidwebo ekhanyayo ezungezile. I-iris ibonakala iphila cishe ngobunkimbinkimbi bayo, amaphethini ayo anemicu efana nemicu ebucayi elukwe ndawonye ibe umsebenzi wobuciko ngokwemvelo. Umniningwane ngamunye omuhle ucacile futhi unembile, unikeza amazwibela obuciko bemvelo okwenza wonke amehlo omuntu ahluke, awekho amabili afanayo ngempela.

Umdlalo wokukhanya kwelanga esweni uphakamisa indawo yesehlakalo ibe yinto engabonakali. Ukukhanya okusagolide kushanela i-sclera, kuyiboleka ngokufudumele, ukukhanya okukhazimulayo kunobumhlophe qwa esivame ukuhlobanisa namehlo. Imivimbo igobela kahle ngaphambili, imicu yayo ethambile ibamba ukukhanya ukuze icwebezele ngezinto ezivelele ezicashile. Izithunzi ezimbalwa ezifiphele ebusweni beso, ezithuthukisa umbono wokujula kanye nobude obuthathu. Isikhumba esisizungezile sikhanyiswe kancane futhi, ukuthungwa kwaso kwemvelo—ukugoqeka okuthambile kanye namagquma afiphele—kwengeza iqiniso futhi kugxilise lesi sihloko esingajwayelekile emzimbeni wenyama. Ukufudumala kokukhanya kuhluke kahle nokucaca okupholile, okunjengengilazi kwe-cornea, ebonisa ilanga ngama-arc amancane acwebezelayo. Lokhu kucabanga kunikeza iso umuzwa wokusebenzisa imali, isikhumbuzo semvelo yalo ephilayo, esabelayo.

Okwenza lesi sithombe sibe namandla ikakhulukazi indlela esiphendula ngayo iso lomuntu, elivame ukunganakwa ekuphileni kwansuku zonke, libe into enkulu futhi emangazayo, njengomkhathi oqukethwe ngaphakathi kwesitho esisodwa. Imibala ye-iris esagolide neluhlaza ikhazimula ngaphandle njenge-corona yenkanyezi, kuyilapho ukwakheka kwe-fibrous kunanela amaphethini esingawabona ohlamvu lwezinkuni, imabula, noma ngisho namacembe embali. Umphumela usondelene futhi mkhulu, umema umbukeli ukuthi angacabangi nje njengethuluzi lokubona kodwa njengophawu lokubona, iwindi lapho sibona yonke imininingwane yomhlaba osizungezile. Kukhona into eyi-hypnotic ebukhali bokubuka, okuthile okusidonsela ekujuleni lapho sibheka isikhathi eside, njengokungathi iso ngokwalo libheke emuva, liqaphela futhi liqhakazile.

Ukujula kwenkundla kucija lo mbono, kudonse ukunaka konke ku-iris nomfundi kuyilapho kufiphalisa kancane indawo ezungezile. Lokhu kukhetha kokuqamba kunikeza isithombe amandla angaphezulu, njengokungathi isikhathi ngokwaso sehlile isikhashana sokugxila okumsulwa. Iso ligcwalisa uhlaka ngokuphelele, lingashiyi iziphazamiso, akukho okuqukethwe okungaphezu kokukhanya kwegolide kwesikhumba esizungezile. Ngokuhlukanisa iso ngale ndlela, isithombe siyasiphoqa ukuthi sibhekane ngqo nemininingwane yaso, sivume ubuthakathaka baso nokuqina, amandla aso kanye nokuba sengozini. Kuyisikhumbuzo sokuthi bungakanani ubuthina, ubungqabavu bethu, kanye nemizwa yethu evezwa ngalesi sici esincane kodwa esiyinkimbinkimbi ngokungapheli.

Kukhona futhi umuzwa ongenakuphikwa wobungqabavu ovela kulokhu kusondela. Ukukhanya kwelanga okufudumele okuchitha imivimbo ne-iris kudlulisa impilo namandla, okusikisela ukuphila okuvumelana nemvelo. Umfundi onenkontileka ubonisa ukusabela, ukuphaphama, umzimba ozivumelanisa ngokwemvelo nendawo yawo. Ukucwebezela komswakamo kuyo yonke i-cornea kugcizelela nakakhulu ubusha, okuqinisa umqondo wokuthi sibheka umuntu ophilayo, ophefumulayo kunesithombe esimile.

Sekukonke, lesi sithombe siphakamisa iso libe into eyisikhumbuzo—inhlanganisela yobuciko, isayensi yezinto eziphilayo kanye nezimpawu. Imema ababukeli ukuthi bamangale ngobuhle obufihlwe ngokusobala, emaphethini ombala nokukhanya kukho konke ukubuka. Ikhuluma ngamandla okubona hhayi nje njengomsebenzi wenyama kodwa njengamandla angokomzwelo nangokomfanekiso, okusikhumbuza ukuthi amehlo abelokhu ebonwa njengamafasitela emphefumulweni. Kuleli hlo elithile, ne-iris yalo ekhazimulayo-eluhlaza okotshani ekhazimula ekukhanyeni okufudumele, sibona kokubili isayensi ye-anatomy kanye nezinkondlo zobukhona, kuhlanganiswe esithombeni esisodwa esingasoze salibaleka.

Isithombe sihlobene: Amagilebhisi Ezempilo: Isithelo Esincane, Umthelela Omkhulu