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A glow stick, also known as a light stick, chem light, light wand, light rod, and rave light, is a self-contained, short-term light-source. It consists of a translucent plastic tube containing isolated substances that, when combined, make light through chemiluminescence. The light cannot be turned off and can be used only once.
Hanging lighting devices, some described as chandeliers, were known since ancient times, and circular ceramic lamps with multiple points for wicks or candles were used in the Roman period. [ 11 ] [ 12 ] The Roman terms lychnuchus or lychnus , however, can refer to candlestick, floor lamps, candelabra, or chandelier. [ 13 ]
Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]
A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.
FD&C Red No. 3, also known as Red 3, is a synthetic food dye that gives foods and drinks a bright, cherry-red color. ... 24/7 Help. For premium support please call: 800-290-4726 more ways to reach ...
An Ohio man allegedly slammed a 15-month-old girl on the floor after she wouldn’t stop crying, fracturing her skull. Two weeks later, she died of her injuries. The man, Piqua resident Michael ...
High-intensity discharge lamps (HID lamps) are a type of electrical gas-discharge lamp which produces light by means of an electric arc between tungsten electrodes housed inside a translucent or transparent fused quartz or fused alumina arc tube. [1] This tube is filled with noble gas and often also contains suitable metal or metal salts.
Russia's Foreign Ministry on Saturday denounced new U.S. sanctions against Moscow's energy sector as an attempt to harm Russia's economy at the risk of destabilising global markets and said the ...
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