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).
News of the actor's casting emerged last week, revealing that Wilson will star as Orm Curry, the human half-brother of Aquaman. The character, most commonly known as the villainous Ocean Master, is a hi-tech pirate who causes natural disasters and wears a special suit that allows him to brave the ocean's depths.