Refraction (sound) 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 guided propagation of sound waves over long distances in the ocean and in the atmosphere. In the atmosphere, vertical gradients of wind speed and temperature lead to refraction. The wind speed is usually increasing with height, which leads to
AACTA Award for Best Direction in a Television Light Entertainment or Reality Series AACTA introduced craft awards for television programs in 2013, the Best Direction in Television award was split into two: Best Direction in a Drama or Comedy and Best Direction in a Television Light Entertainment or Reality Series. AACTA Award for Best Direction in a Television Light Entertainment or Reality Series The AACTA Award for Best Direction in a Television Light Entertainment or Reality Series is an accolade given by the Australian Academy of Cinema and Television Arts (AACTA), a non-profit organisation whose aim is to "identify, award, promote and celebrate Australia's greatest achievements in film and television." The award is