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).
About the Show. Now that the nefarious forces of Black Claw have been silenced, Nick (David Giuntoli) faces an all too familiar foe in Capt. Sean Renard (Sasha Roiz). Having gained a seat of power as the mayor-elect of Portland, Renard is poised to bring rise to his own brand of law and order.