( Fluorescence ( ( is ( ( the process ) ( that ( involves ( excitation ( of ( ( ( a fluorophore ) ( -LRB- ( ( ( a molecule ) ( with ( the ( ability ( to ( ( emit ( fluorescent light ) ) ( in ( the ( ( visible light ) spectrum ) ) ) ) ) ) ) ) ) -RRB- ) ) ) ( using ( ultraviolet light ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Fluorescence)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHNP (WDT that)) (S (VP (VBZ involves) (NP (NP (NN excitation)) (PP (IN of) (NP (NP (DT a) (NN fluorophore)) (PRN (-LRB- -LRB-) (NP (NP (DT a) (NN molecule)) (PP (IN with) (NP (DT the) (NN ability) (S (VP (TO to) (VP (VB emit) (NP (JJ fluorescent) (NN light)) (PP (IN in) (NP (DT the) (ADJP (JJ visible) (JJ light)) (NN spectrum))))))))) (-RRB- -RRB-)) (VP (VBG using) (NP (JJ ultraviolet) (NN light))))))))))) (. .)))
Fluorescence is the process that involves excitation of a fluorophore (a molecule with the ability to emit fluorescent light in the visible light spectrum) using ultraviolet light.
(ROOT (S (NP (DT The) (JJ light-producing) (NN process) (NN fluorescence)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (NN substance)) (VP (VP (VBZ absorbs) (NP (JJ shorter-wavelength) (JJ ultraviolet) (NN light))) (CC and) (VP (ADVP (RB then)) (VBZ gives) (PRT (RP off)) (NP (NP (DT the) (NN energy)) (PP (IN as) (NP (JJ visible) (NN light))))))))) (. .)))