Answer
Kunanirwa k'umunaniro mubisanzwe bigaragarira nk'igice gisukuye, cyoroshye-kigaragara kivunika kiva ku muhengeri cyangwa inkono, aho guhangayika ari byinshi. Gusikana Electron Microscopi (SEM) bizagaragaza 'striations' - imirongo ya microscopique buri kimwe cyerekana uruziga rumwe. Kubireba isoko ya Crest-to-Crest, ubusanzwe gutangirira kumurambararo w'imbere (ID) wigitereko kuko aribwo guhangayika cyane biboneka mugihe cyo kwikuramo. Niba ubuso bwavunitse bwerekana 'ibimenyetso byinyanja' (imisozi ya macroscopique), byerekana ibihe byuburemere butandukanye. Kugirango wirinde ko bitazongera kubaho, intera ihangayikishije $ Δ \ sigma $ igomba kugabanuka, cyangwa kurangiza hejuru bigomba kunozwa (urugero, kurangiza vibratory kurangiza) kugirango ukureho micro-scratches zikora nkimpungenge.
