The travel velocity of these two wave types is not the same (P-waves are faster than S-waves). Thus, if there is an earthquake somewhere, the first waves that arrive are P-waves. In essence, the gap in P-wave and S-wave arrival gives a first estimate of the distance to the earthquake.
With the mysterious U.S. Senator Eddie Morra (Bradley Cooper) providing him with a second drug to counteract NZT's deadly side effects, Brian uses his enhanced abilities to help FBI agent Rebecca Harris (Jennifer Carpenter).
Richard Moll. For the author, see Richard Moll (author). Charles Richard Moll (born January 13, 1943) is an American actor and voice artist, best known for playing Bull Shannon, the bailiff on the NBC sitcom Night Court from 1984 to 1992.