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Who Invented Thermos
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The credit of thermos invention goes to Scottish chemist and physicist "Sir James Dewar". He was best known for his work with low-temperature phenomena. Born in Kincardine, Scotland, and educated at the University of Edinburgh, Sir James Dewar invented the vacuum flask in 1892, which is also known today as the thermos. Before thermos, it was also referred to as Dewar flask. Its name changed from vacuum flask to thermos because a German company "Thermos GmbH" (first company to release vacuum flasks commercially;started in 1904) made it so popular that people started to refer to vacuum flask as thermos. The vacuum flask was not manufactured for commercial/home use until 1904.
The Dewar flask or vacuum flask was a container for storing hot or cold substances. It consists of two flasks, one inside the other, separated by a vacuum. The vacuum greatly reduces the transfer of heat, preventing a temperature change. The walls are usually made of glass because it is a poor conductor of heat. Thermos flasks have a reflective coating that further diminishes heat transfer.
In 1907, Thermos GmbH sold the Thermos trademark rights to three independent companies: The American Thermos Bottle Company of Brooklyn, NY; Thermos Limited of Tottenham, England; Canadian Thermos Bottle Co. Ltd. of Montreal, Canada. In 1909 Thermos won the "Grand Prize Award" at the Alaska Yukon Pacific Exposition and went on to be honored at seven other world expositions. The Thermos vacuum flask made a technological breakthrough in 1911 by producing the first machine-made glass filler. In 1966 Thermos introduced the world's first stainless steel vacuum bottle. This product would go on to revolutionize hot and cold beverage storage around the world.
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