A thermos flask is a ubiquitous example of vacuum insulation at work. In 1892, Scottish scientist Sir James Dewar invented the vacuum flask. 3) The flask is completely watertight, even when laid on its side. Under the sun, in the drizzle, the mother who is holding the umbrella is waiting for her child to go to school. The silver coating on the inner bottle prevents heat transfer by radiation, and the vacuum between its double wall prevents heat moving by convection. 1.3 British A vacuum flask. The best thermos is the Vacuum-Insulated Flask with Quickstop By Isosteel. This is the British English definition of flask.View American English definition of flask.. Change your default dictionary to American English. English to Hindi Dictionary Vacuum flask Meaning in Hindi. thûr'məs . b. Pressure is the exertion of force upon an object. A n insulated Thermos flask is a purchase that keeps paying back all year round. Vacuum flask cooking was introduced to the Asian market in the mid-1990s. Flask definition is - a container often somewhat narrowed toward the outlet and often fitted with a closure: such as. The beginning temperature of the liquid in each bottle was about 87°C. 1 min read. I have a 50,000ml flask with medium thick walls I'll like to take down to -25Hg. 0. A vacuum flask, or thermos, does not allow heat transfer by any of the three ways that heat can travel. Liquids can be sucked into a collection bottle by using a vacuum pump to create low pressure in the bottle. The science behind vacuum sealed, stainless steel water bottles has paved the way for environmentalists and economists to find a solution to the problem caused by too much plastic in our ecosystems. Vacuum flask definition: A vacuum flask is a container which is used to keep hot drinks hot or cold drinks cold.... | Meaning, pronunciation, translations and examples Consequently, it is commonly misapplied when discussing pressure measurements and choosing pressure transducers. 0. Most versions have an inner chamber and an outer plastic or metal case separated by two layers of glass with a vacuum in between. How to say vacuum flask in Spanish. Vacuum flask Matlab in Hindi. A flat, relatively thin container for liquor. A small container, such as a bottle, having a narrow neck and usually a cap, especially: a. A container or case for carrying gunpowder or shot. The glass is usually lined with a reflective metal layer. noun. This arm connects to a vacuum pump or aspirator, creating a vacuum and lowering the pressure inside the flask. Synonyms for vacuum flask include Büchner flask, Dewar flask, Dewar vessel, vacuum bottle, Dewar bulb, Dewar tube, dewar, flask, bottle and container. It is also popularly known by other names, such as a vacuum flask or simply a thermos. Don't try sneaking a flask into your tube sock. These flasks are used for filtering samples because the vacuum forces the filtrate into the flask, while residue remains on the filter paper in the funnel. Gates of Vienna. A frame for holding a sand mold in a foundry. ... A vacuum bottle used to keep beverages hot or cold. (noun) Dictionary ! See more. Translate Flask. vacuum flask definition in English dictionary, vacuum flask meaning, synonyms, see also 'vacuum',vacuum activity',vacuum brake',vacuum cleaner'. 1) He took out a metal flask from a canvas bag. The term vacuum is often misunderstood. Vacuum bottle definition, a bottle or flask having a vacuum liner that prevents the escape of heat from hot contents, usually liquids, or the entrance of heat into cold contents; thermos. The flask actually has both an inner and outer wall separated by a thin layer of vacuum or nearly empty space. Vacuum flask meaning in Bengali - তরল পদার্থ ঠাণ্ডা বা গরম রাখার জন্য নির্বাত বোতল; বোতল; ; vacuum bottle; bottle; | English – Bangla & English (E2B) Online Dictionary. Random good picture Not show. The vacuum cooker (燜燒鍋), often called a thermal cooker in English, is a stainless steel vacuum flask.The flasks come in various sizes ranging from 20 to 40 centimetres (8 to 16 in) in diameter and 25 centimetres (10 in) tall. (noun) A flask is a small container that holds a liquid. We gave it a 5/5 star rating. vacuum flask From Longman Dictionary of Contemporary English Related topics: Utensils vacuum flask ˈvacuum ˌflask noun [ countable ] British English DFU a special container that keeps liquids hot or cold SYN thermos Examples from the Corpus vacuum flask • Keep the mixture in a vacuum flask … When assembled, it has a height of 345mm and a diameter of 95mm. However, pressure can be measured in many different ways, depending on the applications. In 1898 the Scottish scientist James Dewar (1842-1923), also remembered for his invention of the vacuum flask known as the thermos with its valuable heat-preserving properties, beat him in the race to liquefy hydrogen. The thinness of the glass walls stops heat entering or leaving the flask by conduction. The ocean water is placed under a vacuum to lower its boiling point and has a heat source applied, allowing the fresh water to … BBC News, 3 May 2019 "Well before 10am they had breakfasted and were circulating the ground with flask and blanket, the long-learned behaviour of the most loyal of fans. Enrich your vocabulary with the English Definition dictionary Spanish Translation. A vacuum bottle used to keep beverages hot or cold. A thermos flask, also called a Dewar flask, is a special kind of bottle in which hot liquids like tea and coffee remain hot and cold items like ice or cold water remain cold for a long time. Vacuum distillation is often used in large industrial plants as an efficient way to remove salt from ocean water, in order to produce fresh water. dosis de vacuna Find more words! Find more similar words at wordhippo.com! vacuum bottle; vacuum flask. Using the Graphical Analysis ™ 4 app to view my data, I noticed that the 40-year-old Thermos cooled at a slower rate than the new stainless steel vacuum flask. A filter flask is an Erlenmeyer flask with a specialized arm on the side. c. A vial or round long-necked vessel for laboratory use. See 5 authoritative translations of Flask in Spanish with example sentences, phrases and audio pronunciations. The Vacuum Flask Origin Story. The presenters mention that it is a frequently chosen topic by examiners. The frame for a mold of sand in a foundry. Meaning: [flæsk /flɑːsk] n. 1. bottle that has a narrow neck 2. the quantity a flask will hold. ‘He got up at six, packed his car with hot-water bottle, shovel, flask and blanket, and took three hours to drive 12 miles.’ More example sentences My thermos is a red Donald Duck I've had for years. Hypernyms ("vacuum flask" is a kind of...): flask (bottle that has a narrow neck) Hyponyms (each of the following is a kind of "vacuum flask"): Dewar; Dewar flask (vacuum flask that holds liquid air or helium for scientific experiments) "The BBC's Aaron Heslehurst explains how the vacuum flask became a best-selling product." Sufficient vacuum in the collection bottle is essential to support aspiration, but should not be so deep to risk evaporation of solvents. With a wide range of stainless steel products, the Isosteel manufacturers have this brilliant Isosteel VA-9562DQ Duo vacuum Flask with exceptional features. Learn more. This clip shows students how a vacuum flask prevents heat loss. This is known as desalination. Most flasks have a squarish body and a small neck for drinking or pouring. A vacuum flask is a bit like a super-insulated jug. 2) A vacuum flask keeps cool drinks cool and hot drinks hot. Vacuum flask Meaning in Hindi. What does flask mean? vacuum flask meaning: a container that keeps hot liquids hot or cold liquids cold. They must be loyal, no Championship season has started earlier." $\begingroup$ @Karl: Is regular glass much less resistant to vacuum vs borosilicate (I think the lower elasticity plays a big role for internal pressure, but I'm wondering if it makes much of a difference when the pressure is external). A vacuum flask (also known as a Dewar flask, Dewar bottle or Thermos) is an insulating storage vessel which keeps its contents hotter or cooler than its surroundings. flask meaning, definition, what is flask: a special type of bottle that you use to...: Learn more. Creation of the Vacuum Flask. 2. 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