Lighting or illumination is the deliberate use of light to achieve a sensible or aesthetic effect. Lighting contains using both artificial light sources like lamps and light fixtures, as well as pure illumination by capturing daylight. Daylighting (using windows, skylights, or light cabinets) is typically used as the primary supply of light during daytime in buildings. This will save power rather than using artificial lighting, which represents a major part of power consumption in buildings. Correct lighting can enhance task performance, enhance the appearance of an space, or have optimistic psychological results on occupants.
Indoor lighting is usually achieved using light fixtures, and is a key part of interior design. Lighting can also be an intrinsic part of panorama projects.
With the discovery of fireside, the earliest form of artificial lighting used to illuminate an space were campfires or torches. As early as 400,000 BCE, hearth was kindled in the caves of Peking Man. Prehistoric individuals used primitive oil lamps to illuminate surroundings. These lamps were constructed from naturally occurring supplies akin to rocks, shells, horns and stones, were filled with grease, and had a fiber wick. Lamps sometimes used animal or vegetable fats as fuel. Tons of of these lamps (hollow worked stones) have been found in the Lascaux caves in fashionable-day France, courting to about 15,000 years ago. Oily animals (birds and fish) were additionally used as lamps after being threaded with a wick. Fireflies have been used as lighting sources. Candles and glass and pottery lamps were additionally invented
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