( ( This residue ) ( ( ( glows ( with ( a ( brilliant ( white luminescence ) ) ) ) ) ( when ( ( heated ( to ( a ( high temperature ) ) ) ) ( by ( the ( gas flame ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN residue)) (VP (VBZ glows) (PP (IN with) (NP (DT a) (JJ brilliant) (JJ white) (NN luminescence))) (SBAR (WHADVP (WRB when)) (S (VP (VBN heated) (PP (TO to) (NP (DT a) (JJ high) (NN temperature))) (PP (IN by) (NP (DT the) (NN gas) (NN flame))))))) (. .)))
This residue glows with a brilliant white luminescence when heated to a high temperature by the gas flame.
(ROOT (S (NP (NP (NNP Producing) (NN light)) (PP (IN without) (NP (DT a) (JJ high) (NN temperature)))) (VP (VBZ is) (VP (VBN called) (S (ADJP (JJ luminescence))))) (. .)))