( ( ( ( ( ( ( ( ( ( ( ( Electrostatics , ) ( current electricity ) ) , ) electromagnetism ) , ) optics ) , ) ( electromagnetic waves ) ) , ) and ) ( modern physics ) ) ( ( are investigated ) . ) )
(ROOT (S (NP (NP (NNS Electrostatics)) (, ,) (NP (JJ current) (NN electricity)) (, ,) (NP (NN electromagnetism)) (, ,) (NP (NNS optics)) (, ,) (NP (JJ electromagnetic) (NNS waves)) (, ,) (CC and) (NP (JJ modern) (NNS physics))) (VP (VBP are) (VP (VBN investigated))) (. .)))
Electrostatics, current electricity, electromagnetism, optics, electromagnetic waves, and modern physics are investigated.
(ROOT (S (NP (NNS Optics)) (VP (VBZ explains) (NP (NP (DT the) (NN behavior)) (PP (IN of) (NP (JJ visible) (ADJP (JJ light) (CC and) (JJ electromagnetic)) (NNS waves))))) (. .)))