Ukukhanya okuthambileyo, isitayile esilula, ixabiso elifikelelekayo kunye nomoya omhle. Ngenxa yeenzuzo ezahlukeneyo zokukhanya okulandelelanayo, ukukhuthaza olu yilo, ukukhanya komgca ngumlinganiswa oyintloko.

Ngaphezu koko, ngelixa izibane ezisisiseko zanelisayo, izibane zemigca ziyaphuhla kwicala lendalo ye-atmosfera. Ngokusebenzisa ubushushu bombala, umbala kunye notshintsho oluthile oluguquguqukayo, isithuba siyathotywa kwakhona