How does a thermos flask work? | One Minute Bites | Don't Memorise

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📅🆓NEET Rank & College Predictor 2024: infinitylearn.com/neet-rank-p... A thermos flask is a wonderful invention by science. There are a lot of times when you need to carry some liquid food items while you are going out. A thermos flask functions perfectly in keeping hot things hot and cold things cool. But have you ever wondered, how it works? Well, watch this One Minute Bites video by Don't Memorise to find the answer.
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Vacuum flask, also called Dewar Vessel, or Thermos Flask, is a vessel with double walls, the space between which is evacuated. It was invented by the British chemist and physicist Sir James Dewar in the 1890s

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Thermoflask is an example of Isolated system in thermodynamics system

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Does It mean that it doesn't not lose any heat/cold for the time claimed?

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Sir James Dewar FRS FRSE was a Scottish chemist and physicist. He is best known for his invention of the vacuum flask, which he used in conjunction with research into the liquefaction of gases. He also studied atomic and molecular spectroscopy, working in these fields for more than 25 years.

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hello,In the flask there are no way to decrease heat then how it cool after some days?

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the silvered walls cannot fully stop radiation

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The walls of the thermoflask are silvered so radiation of heat doesn't take place? Whats the logic behind it? Anyone?

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The original thermos flask or vacuum flask was invented in 1892 by a Scottish scientist named Sir James Dewar

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Sir James dewar invented the thermos flask ... right???

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*James Dewar* was the first who invented vaccum flask

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Why would you bother with the vaccum if silvering the exterior of the thermos is what stops the heat radiating…..

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Scottish scientist sir james dewar invented the vacum flask in 1892

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James Dewar invented Thermos flask

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James Dewar

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I'm going to move and live in a thermos

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Finally first

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Scottish scientist Sir James Dewar in 1892

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Jame dewar

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...............

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Sir James Dewar in 1890

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James Dewar in 1982

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1892…

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James dewar in 1892

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it was invented in 1892

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First

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I have a thermos 😁

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