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).
In 2011 and 2012 he appeared in a range of Direct Line adverts as a Direct Line representative alongside difficult customers, played by fellow comedic performers Alexander Armstrong, Amelia Bullmore and Lorna Watson.ddison presented the second series of the show until February 2011, when he was replaced by Al Murray. He is also good friends with Geoff Lloyd on Absolute Radio and has made a few appearances on Geoff Lloyd's Hometime Show.