Iziphumo zemifanekiso
UAlbert Einstein uyaziwa nge-equation yakhe e = mc2, echaza ukuba amandla kunye nobunzima (umbandela) yinto enye, kwiifom nje ezahlukeneyo. Uyaziwa ngokufunyanwa kwakhe kwefliectric, apho waphumelela ibhaso likaNobel kwi-physics ngo-1921 Language- (Xhosa)