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Leviton was founded in 1906 by Russian immigrants Evser Leviton and his son Isidor Leviton when they began manufacturing brass mantle tips for natural gas lights in Manhattan's Lower East Side. [ 2 ] [ 3 ] [ 4 ] In 1910, Isidor designed a screw-in lampholder for the newly invented electric light bulb and within ten years the lampholders were ...
A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas/smoke or a combination of these, as a result of non-detonative self-sustaining exothermic chemical reactions. Pyrotechnic substances do not rely on oxygen from external sources to sustain the reaction.
Whale oil is oil obtained from the blubber of whales. [1] Oil from the bowhead whale was sometimes known as train-oil, which comes from the Dutch word traan ("tear drop"). Sperm oil, a special kind of oil used in the cavities of sperm whales, differs chemically from ordinary whale oil: it is composed mostly of liquid wax. Its properties and ...
A flicker light bulb, flicker flame light bulb or flicker glow lamp is a gas-discharge lamp which produces light by ionizing a gas, usually neon mixed with helium and a small amount of nitrogen gas, by an electric current passing through two flame shaped electrode screens coated with partially decomposed barium azide. The ionized gas moves ...
Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate. He invented a version of the light- dimmer switch for use in homes around the United States and led his Lutron Electronics Company into the production of lighting controllers.
Image credits: Sir_Atlass #9. The owners daughter showed up to open 1.5 hours late. Said she thought her mom had given me keys. Proceeded to tell me to unload her car before I could come in and ...
Limelight (also known as Drummond light or calcium light) [1] is a non-electric type of stage lighting that was once used in theatres and music halls. An intense illumination is created when a flame fed by oxygen and hydrogen is directed at a cylinder of quicklime ( calcium oxide ), [ 2 ] due to a combination of incandescence and ...
The worst thing to do after coming into a ton of money: Buy a new house, says an advisor to the ultrawealthy. Alicia Adamczyk. August 14, 2023 at 8:54 AM. Thomas Barwick—Getty Images.