( ( ( ASTRONOMICAL ( TOOLS ( ( -LRB- ( 2 -RRB- ) ) Visible ) ) ) ( light wavelengths ) ) ( ( ( range ( from ( ( ( ( 400 nanometers ) ( -LRB- ( nm -RRB- ) ) ) ( -LRB- ( ( 10 ( -9 m ) ) -RRB- ) ) ) ( for ( violet light ) ) ) ) ) ( to ( ( 700 nm ) ( for ( red light ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP ASTRONOMICAL) (NNP TOOLS) (PRN (-LRB- -LRB-) (NP (CD 2)) (-RRB- -RRB-)) (NNP Visible)) (PP (NN light) (NP (NNS wavelengths)))) (VP (VBP range) (PP (IN from) (NP (NP (NP (CD 400) (NNS nanometers)) (PRN (-LRB- -LRB-) (NP (NN nm)) (-RRB- -RRB-))) (PRN (-LRB- -LRB-) (NP (CD 10) (NN -9) (NN m)) (-RRB- -RRB-)) (PP (IN for) (NP (NN violet) (NN light))))) (PP (TO to) (NP (NP (CD 700) (NN nm)) (PP (IN for) (NP (JJ red) (NN light)))))) (. .)))
ASTRONOMICAL TOOLS (2) Visible light wavelengths range from 400 nanometers (nm) (10 -9 m) for violet light to 700 nm for red light.
(ROOT (S (NP (NN Violet) (CC and) (NN red)) (VP (VBP are) (NP (NP (CD two) (NNS types)) (PP (IN of) (NP (JJ visible) (NN light))))) (. .)))