Inkangeleko eyisitayile, ukukhanya okumise okwe-meniscus, intle kwaye inika isilumkiso esihle kakhulu;Ukukhanya okuphezulu okubomvu kwebhuleki, ukukhwela okukhuselekileyo;Uyilo olutywinwe ngokupheleleyo olungangeni manzi, lukhuseleke ngakumbi kwaye luthembekile;Seta indawo yokukhanya, ukukhanya kwebhuleki kunye nokukhanya kweplate yelayisensi kwenye.