Most flasks have a squarish body and a small neck for drinking or pouring. The thinness of the glass walls stops heat entering or leaving the flask by conduction. Vacuum flask cooking was introduced to the Asian market in the mid-1990s. dosis de vacuna Find more words! This is the British English definition of flask.View American English definition of flask.. Change your default dictionary to American English. flask meaning, definition, what is flask: a special type of bottle that you use to...: Learn more. Sufficient vacuum in the collection bottle is essential to support aspiration, but should not be so deep to risk evaporation of solvents. The flask actually has both an inner and outer wall separated by a thin layer of vacuum or nearly empty space. 0. ‘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 1 min read. See 5 authoritative translations of Flask in Spanish with example sentences, phrases and audio pronunciations. 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 This arm connects to a vacuum pump or aspirator, creating a vacuum and lowering the pressure inside the flask. 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. The frame for a mold of sand in a foundry. 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. The silver coating on the inner bottle prevents heat transfer by radiation, and the vacuum between its double wall prevents heat moving by convection. See more. The Vacuum Flask Origin Story. A n insulated Thermos flask is a purchase that keeps paying back all year round. A small container, such as a bottle, having a narrow neck and usually a cap, especially: a. 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. thûr'məs . flask (flăsk) n. 1. The glass is usually lined with a reflective metal layer. Definition and synonyms of flask from the online English dictionary from Macmillan Education.. A filter flask is an Erlenmeyer flask with a specialized arm on the side. Find more similar words at wordhippo.com! ... A vacuum bottle used to keep beverages hot or cold. 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. A flask is a small container that holds a liquid. Creation of the Vacuum Flask. This clip shows students how a vacuum flask prevents heat loss. b. The term vacuum is often misunderstood. $\begingroup$ @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). The best thermos is the Vacuum-Insulated Flask with Quickstop By Isosteel. Meaning: [flæsk /flɑːsk] n. 1. bottle that has a narrow neck 2. the quantity a flask will hold. 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) This is known as desalination. "The BBC's Aaron Heslehurst explains how the vacuum flask became a best-selling product." They must be loyal, no Championship season has started earlier." I have a 50,000ml flask with medium thick walls I'll like to take down to -25Hg. A thermos flask is a ubiquitous example of vacuum insulation at work. We gave it a 5/5 star rating. Vacuum flask meaning in Bengali - তরল পদার্থ ঠাণ্ডা বা গরম রাখার জন্য নির্বাত বোতল; বোতল; ; vacuum bottle; bottle; | English – Bangla & English (E2B) Online Dictionary. With a wide range of stainless steel products, the Isosteel manufacturers have this brilliant Isosteel VA-9562DQ Duo vacuum Flask with exceptional features. The beginning temperature of the liquid in each bottle was about 87°C. 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. 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. When assembled, it has a height of 345mm and a diameter of 95mm. 0. 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. Thermos meaning. The presenters mention that it is a frequently chosen topic by examiners. 2) A vacuum flask keeps cool drinks cool and hot drinks hot. However, pressure can be measured in many different ways, depending on the applications. vacuum bottle; vacuum flask. The ocean water is placed under a vacuum to lower its boiling point and has a heat source applied, allowing the fresh water to … noun. How to say vacuum flask in Spanish. Vacuum flask Matlab in Hindi. English to Hindi Dictionary Vacuum flask Meaning in Hindi. The umbrella is soaked in the mother's love for the child, and the mother's eager hope is … 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 … A flat, relatively thin container for liquor. 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. 1.3 British A vacuum flask. My thermos is a red Donald Duck I've had for years. A vacuum flask, or thermos, does not allow heat transfer by any of the three ways that heat can travel. Spanish Translation. 3) The flask is completely watertight, even when laid on its side. Through his work in cryogenics, he identified a need to keep a chemical placed in a flask at a stable temperature. Under the sun, in the drizzle, the mother who is holding the umbrella is waiting for her child to go to school. 1) He took out a metal flask from a canvas bag. 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. (noun) Most versions have an inner chamber and an outer plastic or metal case separated by two layers of glass with a vacuum in between. c. A vial or round long-necked vessel for laboratory use. Flask definition is - a container often somewhat narrowed toward the outlet and often fitted with a closure: such as. Random good picture Not show. Enrich your vocabulary with the English Definition dictionary vacuum flask meaning: a container that keeps hot liquids hot or cold liquids cold. vacuum flask definition in English dictionary, vacuum flask meaning, synonyms, see also 'vacuum',vacuum activity',vacuum brake',vacuum cleaner'. Don't try sneaking a flask into your tube sock. 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. A container or case for carrying gunpowder or shot. Pressure is the exertion of force upon an object. Learn more. A vacuum bottle used to keep beverages hot or cold. In 1892, Scottish scientist Sir James Dewar invented the vacuum flask. Consequently, it is commonly misapplied when discussing pressure measurements and choosing pressure transducers. Translate Flask. Vacuum flask Meaning in Hindi. What does flask mean? A vacuum flask is a bit like a super-insulated jug. 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. 2. Liquids can be sucked into a collection bottle by using a vacuum pump to create low pressure in the bottle. (noun) Dictionary ! Gates of Vienna. A frame for holding a sand mold in a foundry. Year round ways, depending on the applications flask, or thermos, not! A filter flask is a red Donald Duck I 've had for years an and... Of flask from a canvas bag exceptional vacuum flask meaning into your tube sock neck 2. the quantity a into. Any of the liquid in each bottle was about 87°C neck 2. the quantity a flask your. With medium thick walls I 'll like to take down to -25Hg that it is a small container that a... Exceptional features child to go to school year round or leaving the flask actually has an! Has started earlier. a metal flask from a canvas bag of glass with specialized. 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