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Early lamps with 300W bulbs tended to fail quickly. Retrofitting the lamp with a 100W bulb resulted in a substantial improvement in bulb life with minimal loss in brightness. Halogen torchères have been banned in some places, such as dormitories , because of the large numbers of fires they have caused.
Note 3] Despite the news releases about the new glass works, the Fostoria Shade and Lamp Company was not formally organized until after it was announced that Kopp was hired. Brown and Graham's new company was formally organized in early March and named Fostoria Shade and Lamp Company. [34] Among members of the board of directors were Graham and ...
Often conical or cylindrical in shape, lampshades can be found on floor, desk, tabletop, or suspended lamps. The term can also apply to the glass or other materials hung around many designs of ceiling lamp. Some lamp shades are also lined with a hard-backed opaque lining, [1] often white or gold, to reflect as much light as possible through the ...
A Tiffany lamp is a type of lamp made of glass and shade designed by Louis Comfort Tiffany or artisans, mostly women, and made (in originals) in his design studio. The glass in the lampshades is put together with the copper-foil technique instead of leaded, the classic technique for stained-glass windows.
Objections to replacement of incandescent lamps for general lighting mainly include the higher purchasing expense of alternative light bulbs. To mitigate the cost effects of these concerns, various programs have been put into place, ranging from subsidies for lamps, to improved standards for measurement of performance and for labeling of products.
The banker's lamp is a style of electric desk or table lamp often characterized by a brass stand, green glass lamp shade, and pull-chain switch. Such a lamp was first patented in the United States under the Emeralite brand name. These types of lamp are frequently used in libraries throughout the United States, which have made the lamp popular ...
Lampworking is a type of glasswork in which a torch or lamp is used to melt the glass. Once in a molten state, the glass is formed by blowing and shaping with tools and hand movements. It is also known as flameworking or torchworking , as the modern practice no longer uses oil-fueled lamps .
For example, a 100-watt, 1000 hour, 120-volt lamp will produce about 17.1 lumens per watt. A similar lamp designed for 230 V would produce only around 12.8 lumens per watt, and one designed for 30 volts (train lighting) would produce as much as 19.8 lumens per watt. [76] Lower voltage lamps have a thicker filament, for the same power rating.
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