Written by Melissa N. Powell at Wednesday, November 15 2017 04:10:55 for Lighting Fixtures
Major reductions in the cost of lighting occurred with the discovery of whale oil and kerosene. The potential of electric light as a new building material was recognized in the 1920s and became a useful design tool by the mid-century. Skillful lighting allowed for theatricality, narrative, and a new emphasis on structure and space. Gas lighting was economical enough to power street lights in major cities starting in the early 1800s, and was also used in some commercial buildings and in the homes of wealthy people. The gas mantle boosted the luminosity of utility lighting and of kerosene lanterns.
Chandeliers: Chandeliers have multiple lightbulbs combined in one unit to create a larger, more dramatic statement piece. Unlike pendants, they produce a stronger glow and therefore can often stand alone. Chandeliers are traditionally more elegant and more expensive than other indoor lighting fixtures, and therefore are used less frequently — you may see one in an entryway or a formal dining room.
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.