Icupa ry'umuvinyu

Igishushanyo c’umuvinyu gikoreshwa ku cupa ry’umuvinyu w’umukara gituma haba ikintu giteye igomwe kandi gikomeye ku cupa, kikaba kigaragaza uburyo bumwe kandi buteye igomwe, bitandukanye cane n’uguca ibibatsi kw’amacupa y’agaciro kanini. Ivyo bimenyetso vy’amaso bitanga inyiyumvo y’ubuhinga buteye igomwe kandi y’ubuhinga bwa none, bw’ubwiza bukeyi, bikirinda uguhungabana kw’amaso bitewe n’uguzirikana birenze urugero. Ivyo bituma amakuru ari ku rupapuro rw’icupa asobanutse neza kandi yoroshe gusoma, mu gihe bituma haba ikirere c’ugutekana n’uburanga, bikaba bigaragaza ishusho itandukanye itekanye ariko ikomeye ku bitanda. Icupa ry’umuvinyu rya Matte ryavuwe mu buryo budasanzwe rifise ugukora ku buryo buteye igomwe kandi buteye igomwe, rituma umuntu agira ubushobozi bwo kurwanya-ugunyerera no kwiruhutsa iyo arifashe; ubushobozi bwayo bwo guca ibibatsi buke-nabwo buragabanya ukubaho kw’ibimenyetso vy’intoke canke amabara y’amazi, bikaba bifasha kuguma icupa risa n’isukuye igihe kirekire. Ingaruka y’umuco ishikwako biciye mu buryo bwo kwizigirwa bwo gusukura ku ruhande nk’ugutera aside canke gutera umusenyi udasanzwe, bikaba bituma habaho ugusukura kumwe n’ugufatanya gukomeye ataco bihinduye ku gushikama kw’imiti no ku mutekano w’ikiyo ubwaco. Iryo zina rya Borch rishira mu ngiro ubugenzuzi bukomeye bw’uburyo mu gihe cose c’uguhingura, ryibanda ku gukingira icupa, ubukomezi bw’icupa (harimwo n’uguhangana n’ingaruka n’uguhangana n’umukazo), uguhuza uburemere bw’uruhome, n’ugushikama n’ugushikama kw’ingaruka z’ibara ry’agahama kugira ngo igicuruzwa gihuye n’ibisabwa vy’ugukoresha umuvuduko munini -gukoresha.