Wholesale lighting
Lighting or
illumination is the deliberate application of
light to achieve some aesthetic or practical effect. Lighting includes use of both artificial
light sources such as lamps and natural illumination of interiors from
daylight.
Daylighting (through windows, skylights, etc.) is often used as the main source of light during daytime in buildings given its high quality and low cost. Artificial lighting represents a major component of energy consumption, accounting for a significant part of all energy consumed worldwide. Artificial lighting is most commonly provided today by
electric lights, but
gas lighting,
candles, or
oil lamps were used in the past, and still are used in certain situations. Proper lighting can enhance task performance or aesthetics, while there can be energy wastage and adverse
health effects of poorly designed lighting. Indoor lighting is a form of
fixture or
furnishing, and a key part of
interior design. Lighting can also be an intrinsic component of
landscaping
Low-intensity lighting and haze in a concert hall allows laser effects to be visible
Lighting is classified by intended use as general, localized, or task lighting, depending largely on the distribution of the light produced by the fixture.
- Task lighting is mainly functional and is usually the most concentrated, for purposes such as reading or inspection of materials. For example, reading poor-quality reproductions may require task lighting levels up to 1500 lux (150 footcandles), and some inspection tasks or surgical procedures require even higher levels.
- Accent lighting is mainly decorative, intended to highlight pictures, plants, or other elements of interior design or landscaping.
- General lighting (sometimes referred to as ambient light) fills in between the two and is intended for general illumination of an area. Indoors, this would be a basic lamp on a table or floor, or a fixture on the ceiling. Outdoors, general lighting for a parking lot may be as low as 10-20 lux (1-2 footcandles) since pedestrians and motorists already used to the dark will need little light for crossing the area.
A demonstration of the effects of different kinds of lighting
Floodlights are used to illuminate outdoor playing fields or work zones during nighttime.
From Wikipedia, the free encyclopedia : Wholesale lighting
