Lighting or illumination is the deliberate use of light to realize a practical or aesthetic effect. Lighting includes using both synthetic light sources like lamps and light fixtures, as well as pure illumination by capturing daylight. Daylighting (using windows, skylights, or light shelves) is usually used as the principle source of light throughout daytime in buildings. This can save energy in place of using synthetic lighting, which represents a major element of energy consumption in buildings. Proper lighting can improve job efficiency, enhance the appearance of an space, or have positive psychological effects on occupants.
Indoor lighting is often accomplished using light fixtures, and is a key part of interior design. Lighting will also be an intrinsic element of landscape projects.
With the invention of fireplace, the earliest type of synthetic lighting used to light up an space were campfires or torches. As early as 400,000 BCE, hearth was kindled in the caves of Peking Man. Prehistoric people used primitive oil lamps to light up surroundings. These lamps were made out of naturally occurring materials similar to rocks, shells, horns and stones, were stuffed with grease, and had a fiber wick. Lamps typically used animal or vegetable fats as fuel. Tons of of these lamps (hollow worked stones) have been found in the Lascaux caves in trendy-day France, dating to about 15,000 years ago. Oily animals (birds and fish) were also used as lamps after being threaded with a wick. Fireflies have been used as lighting sources. Candles and glass and pottery lamps were also invented
. Click here to see all digital image