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' recap: 'Badge! Gun!'. He promised heâd be back â and he will be. Bradley Cooper, who plays Senator and presidential hopeful Eddie Morra, is set to return to Limitless in episode 6 airing Oct. 27, executive producer Craig Sweeny revealed at the New York Comic Con panel for the show Friday afternoon.