In astronomy, a spectroheliograph is an instrument used for photographing or recording the image of what?
Spectroheliograph Spectroheliograph The spectroheliograph is an instrument used in astronomy which captures a photographic image of the Sun at a single wavelength of light, a monochromatic image. The wavelength is usually chosen to coincide with an spectral wavelength of one of the chemical elements present in the Sun. It was developed independently by George Ellery Hale and Henri-Alexandre Deslandres in the 1890s and further refined in 1932 by Robert R. McMath to take motion pictures. The instrument comprises a prism or diffraction grating and a narrow slit that passes a single wavelength (a monochromator). The light is focused onto a photographic
Recording studio as an instrument and early 1970s, and remained so into the 2010s. During the 1970s, the "studio as instrument" concept shifted from the studio's recording space to the studio's control room, where electronic instruments could be plugged directly into the mixing console. As of the 2010s, the "studio as instrument" idea remains ubiquitous in genres such as pop, hip-hop, and electronic music. Notes Citations Bibliography Recording studio as an instrument In music production or composition, recording studios are sometimes referred to as an instrument forming a vital part of the music creation process. Also known as "playing the studio", the approach is typically