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VELUX is a Danish manufacturing company that specialises in roof windows, skylights, sun tunnels and related accessories. The company is headquartered in Hørsholm , Denmark and is a part of VKR Holding A/S. VELUX Group is a founding partner of the global Active House Alliance.
Skylights are widely used in daylighting design in residential and commercial buildings, mainly because they are the most effective source of daylight on a unit area basis. An alternative to a skylight is a roof lantern. A roof lantern is a daylighting cupola that sits above a roof, as opposed to a skylight which is fitted into a roof's ...
Skylight in the vault in the Chapel of the Constable of the Burgos Cathedral, a glazed closed skylight from the 15th century A skylight (sometimes called a rooflight ) is a light-permitting structure or window, usually made of transparent or translucent glass, [ 1 ] that forms all or part of the roof space of a building for daylighting and ...
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Shading coefficient (SC) is a measure of thermal performance of a glass unit (panel or window) in a building. It is the ratio of solar gain (due to direct sunlight) passing through a glass unit to the solar energy which passes through 3mm Clear Float Glass. [1]
The Rayleigh sky model describes the observed polarization pattern of the daytime sky. Within the atmosphere, Rayleigh scattering of light by air molecules, water, dust, and aerosols causes the sky's light to have a defined polarization pattern. The same elastic scattering processes cause the sky to be blue.
There is essentially no direct sunlight under an overcast sky, so all light is then diffuse sky radiation. The flux of light is not very wavelength-dependent because the cloud droplets are larger than the light's wavelength and scatter all colors approximately equally.
The room is located on the top floor, is quite small, and has a skylight. Guests of the parlor often collect on the porch in the evenings and chat. One evening, Miss Leeson, who is young and pretty, points out a star in the sky and declares she has named it Billy Jackson. One of the other women corrects her sharply.