Yenza izibane zobungqina bokudubula zikhazimle

Okokuqala, ukukhanya okubonakalayo luhlobo lwemitha ye-electromagnetic, kodwa olu hlobo lwemitha ngoku alunampembelelo kumzimba womntu.

Izibane ezingenakugqabhuka ziyilwe kwaye ziveliswe ngokwemigangatho yokhuseleko, ngoko akukho mfuneko yakukhathazeka xa uzisebenzisa.