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-Page 44. Air Date: 10/13/15. Brian's loyalty to the FBI is tested when Sands (Colin Salmon), Senator Edward Morra's representative, demands he steal the FBI's secret files on NZT. Also, Agent Harris is emotionally conflicted when she learns what her estranged father left her following his death.(TV-14 L).imitless-Page 44. Air Date: 10/13/15. Brian's loyalty to the FBI is tested when Sands (Colin Salmon), Senator Edward Morra's representative, demands he steal the FBI's secret files on NZT. Also, Agent Harris is emotionally conflicted when she learns what her estranged father left her following his death.