Whēa Tūhono Tūhono Pūkenga

Ko ngā karu whetū āwhio he taputapu whetō kua hoahoaia mō te wātū mutunga o te whakatinanatanga o te mata, e whakamahi ana i ngā pāpaku whetō iti rawa (he tata ki te 1000 grit me runga ake, marautia eke ki te 8000 grit, teitei ake rānei) kia eke ai ki te mata paparangi, ki te mata iti hoki ki runga i ngā tikanga maha. Kua hangaia enei karu ki te tika, e whai ana i ngā anau iti nei o ngā pāpaku whetō—e noho marautia ana ko te diamanti, alumina, te cerium oxide rānei—e pakaru ana ki roto i tētahi pouaka muramura, pērā i te huruhuru, te parakete, te kāpara māmā rānei, e whai ai ngā anau i te hononga māmā, ōrite ki te taumahi. Ko te nuinga o te grit āwhio ka arai i te wehenga o te tikanga, e whai ana i te whakakore i ngā ngoikera iti rawa mai i ngā tahua whetu māmā ake, pērā i ngā kōpere iti, ngā tohu porotiti, te kapua rānei, ka hua ai he mata ki te maarama, ki te whakapapa hoki. Ko te hanganga o ngā karu whetū āwhio e matua whai ana i te māmā, te whakauru hoki, kia kaua e whara i ngā mata ngoikera engari e āki ai te whetō kia pai ai te whakatinana. Ko ngā karu hurihia ki te huruhuru he noho tāpiripiri mō te whetū i te paraihe, nā te mea ko te hanga porowhakapapa o te huruhuru e pupuri ai i ngā kaiwhetu (pērā i te rongo, te tripoli rānei) e whakakei ai i te mahi whakatinana. Ko ngā karu hurihia ki te parakete he tino pai mō ngā mata pōrohu, ngā mata ara rānei, pērā i te taonga taonga, te karu whakapae rānei, nā te mea ko te parakete e whakauru ana ki ngā takotoranga kaua ko te whakaputanga i te pēhi nui. Hei te nuinga o ngā umanga e here ana te whakatinanatanga o te mata: kei te hanga taonga, ka whetu i ngā paraihe uku penei i te hirihiri, te karu rānei ki te kiriata ataahua; kei te hanga karu whakapae, ka whetu i ngā karu hiriwa kia tiakina ai te mārama o te whakapae; kei te whakarewa motukā, ka whakakore i ngā tohu porotiti iti rawa mai i ngā mata paint, eke atu ana ki te mutunga o te whare whakanoa; ā, kei te hanga semiconductor, ka whetu i ngā wafer hirihiri kia eke ki te taumata atomiki o te māmā. Ko te whakamahi i ngā karu whetū āwhio he whai muri i ngā tahua whetu māmā ake, e whai ana i te whakatinanatanga o te mata kia eke ki te mutunga e hiahia ana. Ko te nuinga o rātou he whakamahi tahi me ngā kaitohu whetu tere iti hei whakaiti i te hau, e āwe ai pea i ngā tikanga ngoikera, te kaiwhetu rānei e pakaru ai. E ono tonu ngā karu āwhio e ono e whai ana i te wai, te hinu rānei hei āwhina i te kawenga, e iti ake ai te mirumiru, kia mau tonu ai te mata. Mō ngā tohunga, ngā kaihanga hoki e hiahia ana ki te taumata teitei o te kounga mata, ko ngā karu whetū āwhio te mutunga whakamutunga e huri ai i tētahi hua pai ki tētahi hua whakapono, e whakaatu ana i te tohunanga huri noa i te māmā, te ataahua.