Written by: Gladys Getz
Class: Lighting Fixtures, More >>
Written at: Friday, November 10 2017 10:20:53
Dining Table: The pendant should be suspended about 30 to 36 inches above the table. This will allow for ample illumination while reducing glare at the same time. Bar or Raised Counter:: The bottom of your pendant light should float about 30 inches above the counter surface. For desks, bring the light in closer to the work surface by allowing your pendant lamp to float about 16 inches from the surface. However, this can change depending on the height of you and your family. Foyer: Illuminate your space without encroaching on head space by suspending your hanging lamp about seven feet from the floor.
Fireflies have been used as lighting sources. Candles and glass and pottery lamps were also invented. Chandeliers were an early form of light fixture. The earliest candle chandeliers were used by the wealthy in medieval times, this type of chandelier could be moved to different rooms. From the 15th century, more complex forms of chandeliers, based on ring or crown designs, became popular decorative features in palaces and homes of nobility, clergy and merchants. Its high cost made the chandelier a symbol of luxury and status.
With the discovery of fire, the earliest form of artificial lighting used to illuminate an area were campfires or torches. As early as 400,000 BCE, fire was kindled in the caves of Peking Man. Prehistoric people used primitive lamps to illuminate surroundings. These lamps were made from naturally occurring materials such as rocks, shells, horns and stones, were filled with grease, and had a fiber wick. Lamps typically used animal or vegetable fats as fuel. Hundreds of these lamps (hollow worked stones) have been found in the Lascaux caves in modern-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.
Extensive luminaire photometric designing calls for consideration of the amount of functional light present, the energy expended, as well as the aesthetic impact supplied by the lighting system. Some buildings, like surgical centers and sports facilities, are primarily concerned with providing the appropriate amount of light for the associated task. Some buildings, like warehouses and office buildings, are primarily concerned with saving money through the energy efficiency of the lighting system.