Atmospheric refraction Atmospheric refraction is considered in measuring the position of both celestial and terrestrial objects. Astronomical or celestial refraction causes astronomical objects to appear higher above the horizon than they actually are. Terrestrial refraction usually causes terrestrial objects to appear higher than they actually are, although in the afternoon when the air near the ground is heated, the rays can curve upward making objects appear lower than they actually are. Refraction not only affects visible light rays, but all electromagnetic radiation, although in varying degrees. For example, in the visible spectrum, blue is more affected than red. This may cause astronomical
The Sound of a Voice The Sound of a Voice The Sound of a Voice is a 1983 play by American playwright David Henry Hwang. Hwang's fifth play, it is an original ghost story inspired by Japanese folk stories, films, and Noh theater. The play was first produced as part of the production "Sound and Beauty" on November 6, 1983 Off-Broadway at the Joseph Papp Public Theater. It was directed by and featured John Lone. Composer Philip Glass and Hwang adapted it for the opera "The Sound of a Voice" in 2003. That same year, Susan Hoffman directed a film adaptation entitled "Sound of a