( ( When ( ( ( ( positive and ) negative ) ( charged particles ) ) ( are ( oscillated ( towards ( each other ) ) ) ) ) ) ( they ( ( will ( induce ( ( an ( electromagnetic wave ) ) ( which ( ( spreads out ) ( in ( ( every direction ) ( except ( ( the path ) ( of ( their oscillation ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (ADJP (JJ positive) (CC and) (JJ negative)) (JJ charged) (NNS particles)) (VP (VBP are) (VP (VBN oscillated) (PP (IN towards) (NP (DT each) (JJ other))))))) (NP (PRP they)) (VP (MD will) (VP (VB induce) (NP (NP (DT an) (JJ electromagnetic) (NN wave)) (SBAR (WHNP (WDT which)) (S (VP (VBZ spreads) (PRT (RP out)) (PP (IN in) (NP (NP (DT every) (NN direction)) (PP (IN except) (NP (NP (DT the) (NN path)) (PP (IN of) (NP (PRP$ their) (NN oscillation))))))))))))) (. .)))
When positive and negative charged particles are oscillated towards each other they will induce an electromagnetic wave which spreads out in every direction except the path of their oscillation.
(ROOT (S (NP (JJ Electromagnetic) (NNS waves)) (VP (VBP are) (VP (VBN created) (PP (IN by) (NP (VBG oscillating) (NNS charges))))) (. .)))