Posted by Michael Smith for Lighting Fixtures at Friday, November 17 2017 10:16:58
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.
The more transparent the lighting fixture is, the higher efficacy. Shading the light will normally decrease efficiency but increase the directionality and the visual comfort probability.
The PH-lamps are a series of light fixtures designed by Danish designer and writer Poul Henningsen from 1926 onwards. The lamp is designed with multiple concentric shades to eliminate visual glare, only emitting reflected light, obscuring the light source.
Bohemian style was largely successful across Europe and its biggest draw was the chance to obtain spectacular light refraction due to facets and bevels of crystal prisms. As a reaction to this new taste Italian glass factories in Murano created new kinds of artistic light sources. Since Murano glass was not suitable for faceting, typical work realized at the time in other countries where crystal was used, venetian glassmakers relied upon the unique qualities of their glass. Typical features of a Murano chandelier are the intricate arabeques of leaves, flowers and fruits that would be enriched by coloured glass, made possible by the specific type of glass used in Murano.