Nokuba uyabaleka okanye uyaqeqeshwa, esi sikhono sifutshane sinelaphu lokurisayikilisha sikunika ukukhanya, ukugquma okuphefumlayo okufunayo.
Baleka ngokukhawuleza nangokukhululekileyo kwezi thiti zirhabaxa, umbilo-zikhuni ezinesilivere kumthungo osecaleni.
