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).
Carmen Electra was added to the cast as Sarah Hicks, a character modeled after Heather Locklear's character, Amanda Woodward, on Melrose Place. The changes did not improve ratings and The WB canceled Hyperion Bay in February 1999, with the last episodes airing in March 1999. Cast. Mark-Paul Gosselaar as Dennis Sweeny; Dylan Neal as Nick Sweeny