Edison light bulb

's shop in Menlo Park Light bulbs with a carbon filament were first demonstrated by Thomas Edison in October 1879. These carbon filament bulbs, the first electric light bulbs, became available commercially that same year. In 1904 a tungsten filament was invented by Austro-Hungarians Alexander Just and Franjo Hanaman, and was more efficient and longer-lasting than the carbonized bamboo filament used previously. The introduction of a neutral gas to the glass envelope (or bulb) also helped to improve the lifespan and brightness of the bulb. as well as radiometers. His flicker bulb was used in a 7-Up commercial, and the company he ran since 1964, Kyp-Go, is currently the only US manufacturer of carbon-filament bulbs. == Resurgence ==

In the 1980s, after watching a salvage operation, Bob Rosenzweig started the reproduction and selling of his faux-antique bulbs. These bulbs maintain the same "exposed" look to further preserve the vintage reproduction style, and often employ the "ST" long-pear bulb shape for the same reason. LED bulbs, including LED retro types, are much more energy-efficient than any incandescent lighting. A 2010 article in The New York Times noted that some restaurants were hanging hundreds of Edison light bulbs from their ceilings, stating: "Whether in hip hangouts tapping into the popular Victorian industrial look or elegant rooms seeking to warm up their atmosphere, the bulb has become a staple for restaurant designers, in part because it emulates candlelight and flatters both dinner and diner." Within several years, the aesthetic spread globally. By August 2016, design reporter Kyle Chayka bemoaned in The Verge that every new cafe around the world was beginning to look the same no matter whether a person was "in Odessa, Beijing, Los Angeles, or Seoul: the same raw wood tables, exposed brick, and hanging Edison bulbs". Quartz would later trace the popularization of these looks to Brooklyn, New York. ==References==