The origins of the modern Thermos flask can be traced back to the laboratory of Sir James Dewar, a 1800s Scottish scientist, where he tried out low-temperature materials. Producing liquid oxygen at temperatures below -183 C, the issue of storage proved particularly challenging and in 1892 Dewar developed his very own solution, the Túi đựng Hộp Cơm.
His invention was comprised of two glass-walled chambers separated with a vacuum, which prevented air currents from moving heat in or out along with a silver coating made a reflective layer to reduce additional transfer of heat by radiation. Dewar built on his sub-zero expertise, becoming the first person to create liquid and solid hydrogen and after that to co-invent cordite, a smokeless gunpowder. Eventually knighted in 1904 in recognition of his significant contributions to science, the full potential of his vacuum flask had yet to become realised.
Meanwhile, Rheinhold Burger, one of Dewar’s former pupils, realised the vacuum flask may have commercial applications. He improved on the fragile design by enclosing the glass chamber in a robust metal casing, secured with protective rubber mountings and then in 1904 he sold the concept to a German company of glassblowers. Such a novel invention deserved an impressive name and a competition was soon launched to locate one. The eventual winner, a resident of Munich, could never have guessed that his choice would be a household name in the 21st Century. Derived from the Greek word for heat, “therme”, the Thermos flask had arrived.
Initially, production proved slow and expensive as each glass vessel was hand-blown by skilled craftsmen and merely a small number of flasks may be completed in a day. Despite this Thermos expanded, becoming an international concern as well as in 1911 a London-based subsidiary made an essential breakthrough inside the mechanisation of flask production. Output increased, prices fell and also the Vali Khung Nhôm was a must-have item featuring its miraculous claim to keep fluids hot for twenty four hours or cold for three days.
An intensive marketing campaign declared it “the bottle in the 20th Century created for up-to-date people” and “an absolute necessity for each modern household from Pole to Pole.” Endorsed by Earnest Shackleton on his visit to the Antarctic as well as the Wright Brothers within their aeroplane, the Thermos was taken on many famous expeditions, increasing its status even more.
Since the flask increased in popularity, new products became available including the classic pint-sized “Blue Bottle” and also the “Jumbo Jug,” a gallon-sized jar for storing food. The development of stronger Pyrex jars in 1928 triggered the creation of huge 28 gallon containers. These were used in shops as ice cream cabinets or even to store frozen fish although commercial refrigeration took over within the 1930s.
World War 2 brought big changes for your Thermos Company in Britain. Almost all its resources were directed towards military demands because the vacuum flask became standard wartime issue. It provides often been claimed that every time a thousand bomber planes went on a raid, over ten thousand vacuum flasks went along with them. A former pilot recalls how provisions were scarce but, “my kit always was comprised of Thermos flasks of coffee and tea and packs of sandwiches.”
To this day, it is apparently valued by servicemen, worldwide. A soldier, recently on duty in Afghanistan, describes how the Russians customise their Jeeps. “Commanders make sure they are plush -fitting curtains, quilted seat covers, fans and drinks cabinets (always containing a Thermos flask of black tea).” Following the Second World War production refocused on civilian requirements and ynohag population seemed keen to renew its acquaintance using the pint-sized miracle.
Already established being a domestic favourite for the storage of drink and food, the Bịt Tai Chống ồn had wider implications for science, medicine and technology as well as its set of applications continued to grow with the second half of the century. Its insulating properties proved critical in the field of medicine because it provided an ideal medium for your transport of insulin, human tissue samples and eventually donor organs. Vacuum flask technology has also been applied to aircraft instrumentation, weather detection equipment and is also found in the nuclear power industry and international Space programmes.
In a rapidly developing world, this innovative product worked hard to keep up with current trends and establish itself as being a 20th Century icon. As cheap flights made travel more accessible and new technology triggered extreme sports, the development of the initial stainless-steel vacuum bottle in 1966 ensured the flask could fulfill the demands of any new generation of adventurers. With environmental issues on the agenda today, the most obvious energy saving benefits may retain the key to its survival for another century.