( Students ( ( study ( ( ( ( ( ( ( mechanics , ) ( wave motion ) ) , ) ( electromagnetism ( , ( photons ( , ( ( atoms and ) nuclei ) ) ) ) ) ) , ) and ) ( a ( special ( research topic ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Students)) (VP (VBP study) (NP (NP (NNS mechanics)) (, ,) (NP (NN wave) (NN motion)) (, ,) (NP (NN electromagnetism) (, ,) (NNS photons) (, ,) (NNS atoms) (CC and) (NNS nuclei)) (, ,) (CC and) (NP (DT a) (JJ special) (NN research) (NN topic)))) (. .)))
Students study mechanics, wave motion, electromagnetism, photons, atoms and nuclei, and a special research topic.
(ROOT (S (NP (NP (DT The) (JJ specialized) (NN study)) (PP (IN of) (NP (NP (DT the) (NN motion)) (PP (IN of) (NP (NP (NNS objects)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (JJ atomic/subatomic) (PP (IN in) (NP (NN size)))))))))))) (VP (VBZ is) (VP (VBN called) (NP (NN quantum) (NNS mechanics)))) (. .)))
The specialized study of the motion of objects that are atomic/subatomic in size is called quantum mechanics.