( ( ( The time ) ( ( required ( for ( one wavelength ) ) ) ( to ( pass ( ( a point ) ( in space ) ) ) ) ) ) ( ( is ( ( the ( wave period ) ) ( -LRB- ( T -RRB- ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN time)) (VP (VBN required) (PP (IN for) (NP (CD one) (NN wavelength))) (S (VP (TO to) (VP (VB pass) (NP (NP (DT a) (NN point)) (PP (IN in) (NP (NN space))))))))) (VP (VBZ is) (NP (NP (DT the) (NN wave) (NN period)) (PRN (-LRB- -LRB-) (NP (NNP T)) (-RRB- -RRB-)))) (. .)))
The time required for one wavelength to pass a point in space is the wave period (T).
(ROOT (S (NP (NN Period)) (VP (VBZ is) (NP (NP (DT the) (NN time) (NN interval)) (VP (VBN required) (PP (IN for) (NP (CD one) (JJ complete) (NN wave) (S (VP (TO to) (VP (VB pass) (NP (NP (DT a) (NN point)) (VP (VBN called))))))))))) (. .)))