( ( ( Compare ( ( the ( fundamental processes ) ) ( of ( reflection ( , ( refraction ( , ( and ( image formation ) ) ) ) ) ) ) ) ) ( in ( optical systems ) ) ) . )
(ROOT (S (VP (VB Compare) (NP (NP (DT the) (JJ fundamental) (NNS processes)) (PP (IN of) (NP (NN reflection) (, ,) (NN refraction) (, ,) (CC and) (NN image) (NN formation)))) (PP (IN in) (NP (JJ optical) (NNS systems)))) (. .)))
Compare the fundamental processes of reflection, refraction, and image formation in optical systems.
(ROOT (S (NP (DT An) (NN image)) (VP (VBZ is) (NP (NP (DT a) (NN copy)) (PP (IN of) (NP (NP (DT an) (NN image)) (VP (VBN formed) (PP (IN by) (NP (NN reflection) (CC or) (NN refraction)))))))) (. .)))