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
Primetime Emmy Award for Outstanding Art Direction for a Miniseries or Movie Primetime Emmy Award for Outstanding Art Direction for a Miniseries or Movie The Primetime Emmy Award for Outstanding Art Direction for a Miniseries or Movie is a retired award that was handed out annually at the Creative Arts Emmy Awards. In 2014, the category was restructured into Outstanding Production Design for a Narrative Contemporary or Fantasy Program (One Hour or More) and Outstanding Production Design for a Narrative Period Program (One Hour or More). Outstanding Achievement in Art Direction and Scenic Design Outstanding Art Direction for a Dramatic Program or Series Outstanding Art Direction for a Dramatic Special Outstanding Art