artificial lighting
21Christmas lighting technology — has been subject to considerable development and variation since the replacement of candles by electric lights. Contents 1 Incandescent Christmas Lights 2 LEDs 3 Fiber optic lights 4 B …
22Light pollution — This article is about light pollution in the visible spectrum. For information on pollution in the radio spectrum, see radio spectrum pollution. This time exposure photo of New York City at night shows skyglow, one form of light pollution …
23Architecture of the night — De Volharding Building, The Hague, 1928 by Jan Buijs, photographed in 1930 …
24interior design — 1. the design and coordination of the decorative elements of the interior of a house, apartment, office, or other structural space, including color schemes, fittings, furnishings, and sometimes architectural features. 2. the art, business, or… …
25History of film — This article is about the history of cinema. For other uses, see History of photography. Years in film 1870s 1880s 1890s …
26Daylighting — For the restoration of culverted streams to above ground channels, see Daylighting (streams). For a similar operation with transportation tunnels, see Daylighting (tunnels). A skylight providing internal illumination Daylighting is the practice… …
27Solar energy — is the light and radiant heat from the Sun that powers Earth s climate and weather and sustains life. Since ancient times it has been harnessed for human use through a range of technologies. Solar radiation along with secondary solar resources… …
28architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …
29Daylight harvesting — is the term used in sustainable architecture and the building controls and active daylighting industries for a control system that reduces the use of artificial lighting with electric lamps in building interiors when natural daylight is available …
30Daylight factor — A daylight factor is the ratio of internal light level to external light level and is defined as follows: DF = (Ei / Eo) x 100% where, Ei = illumiance due to daylight at a point on the indoors working plane, Eo = simultaneous outdoor illuminance… …
