Sound amplification by stimulated emission of radiation mechanism and an active medium. The pumping procedure can be induced for example by an alternating electric field or with some mechanical vibrations of resonators, followed by acoustic amplification in the active medium. The fact that a SASER operates on principles remarkably similar to a laser, can lead to an easier way of understanding the relevant operation circumstances. Instead of a feedback-built potent wave of electromagnetic radiation, a SASER delivers a potent sound wave. Some methods for sound amplification of GHz-THz have been proposed so far. Some have been explored only theoretically and others have been explored in non-coherent experiments.
I Changed a Lot I Changed a Lot I Changed a Lot is the eighth studio album by DJ Khaled. It was released on October 23, 2015, by We the Best Music Group and RED Distribution. Recording sessions took place during 2014 to 2015, with its production by Khaled, along with The Beat Bully, Lee on the Beats, Danja, Bkorn and The Mekanics, as well as guest appearances from Future, Rick Ross, Boosie Badazz, Jeezy, Chris Brown, August Alsina, Fetty Wap, Yo Gotti, Trick Daddy, French Montana, Meek Mill, Beanie Sigel, Jadakiss, Lil Wayne, Big Sean. Trey Songz, Jeremih, Ace Hood, Vado, Jay-Z, Mavado,