Written for Lighting Fixtures by Albert Barajas at Thursday, November 09 2017 09:26:56
An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the surroundings.
Your beautiful and functional kitchen island isn’t complete without a matching light fixture. When done right, kitchen island lighting enhances the ambience while providing effective task lighting at the same time. Your first consideration when choosing island lighting should be color and style. You’ll want to find a pendant, a chandelier or another form of lighting that complements the design of your kitchen. While your island lighting can become the main focal point of the room, if you already have a grand range hood or detailed backsplash that’s worthy of design envy, you may want your lights to simply draw the eyes to these instead.
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.