Refraction (sound) a downward bending of the sound rays towards the ground. The same holds if the temperature is decreasing with height. If the temperature is increasing with height (inversion) and the wind speed is low, sound rays are bend upwards. Refraction (sound) Refraction, in acoustics, comparable to the refraction of electromagnetic radiation, is the bending of sound propagation trajectories (rays) in inhomogeneous elastic media (gases, liquids, and solids) in which the wave velocity is a function of spatial coordinates. Bending of acoustic rays in layered inhomogeneous media occurs towards a layer with a smaller sound velocity. This effect is responsible for
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,