Point Charges O Existed trajectory wit position of at time t O Observation time, position cit-try O And the retarded time O tr is eariler than t O witr the retarded position of the charges O z r-w(tr
Puntladings O bestaan trajek wit posisie van tyd t O Waarneming tyd, posisie. cit-drie o En die vertraagde tyd O tr is eariler as t O witr die vertraagde posisie van die aanklagte O Z RW (tr.