Isicelo:Kwimizi-mveliso emikhulu yamandla obushushu obushushu, amazibuko okuthutha amalahle, imigodi yamalahle, imigodi, izinto zokwakha kunye nezinye iindawo ezifuna ukususwa kwentsimbi ephezulu, kwaye inokusebenza ngokuqhelekileyo kwiindawo ezirhabaxa ezifana nothuli, ukufuma, kunye nomhlwa wokutshizwa kwetyuwa. indlela yokupholisa kwintsimi ye-electromagnetic emhlabeni.