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).
Limitless is an American crime drama television series starring Jake McDorman as Brian Finch, who discovers the power of a mysterious drug called NZT-48 which opens the full possibility of his brain and gives him perfect recall of everything he has ever read, heard, or seen.