( ( ( ( ( ( ( ( This process ) ( of ( excitation ( , ( ( relaxation and ) emission ) ) ) ) ) ( of light ) ) ( is ( called luminescence ) ) ) , ) and ) ( ( much information ) ( can ( be ( ( gleaned ( of ( the ( materials properties ) ) ) ) ( by ( investigating ( ( the ( colour ( and ( temporal structure ) ) ) ) ( of ( the luminescence ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT This) (NN process)) (PP (IN of) (NP (NN excitation) (, ,) (NN relaxation) (CC and) (NN emission))) (PP (IN of) (NP (NN light)))) (VP (VBZ is) (VP (VBN called) (S (ADJP (JJ luminescence)))))) (, ,) (CC and) (S (NP (JJ much) (NN information)) (VP (MD can) (VP (VB be) (VP (VBN gleaned) (PP (IN of) (NP (DT the) (NNS materials) (NNS properties))) (PP (IN by) (S (VP (VBG investigating) (NP (NP (DT the) (NN colour) (CC and) (JJ temporal) (NN structure)) (PP (IN of) (NP (DT the) (NN luminescence))))))))))) (. .)))
This process of excitation, relaxation and emission of light is called luminescence, and much information can be gleaned of the materials properties by investigating the colour and temporal structure of the luminescence.
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