( ( This energy ) ( ( ( ( is ( emitted ( in ( ( the form ) ( of light ) ) ) ) ) and ) ( is ( known ( as ( synchrotron radiation ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN energy)) (VP (VP (VBZ is) (VP (VBN emitted) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN light))))))) (CC and) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (NN synchrotron) (NN radiation)))))) (. .)))
This energy is emitted in the form of light and is known as synchrotron radiation.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NNS electrons)) (VP (VB return) (PP (TO to) (NP (DT a) (JJR lower) (NN energy) (NN level)))))) (, ,) (NP (PRP they)) (VP (VBP emit) (NP (NP (DT the) (JJ excess) (NN energy)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN light))))))) (. .)))