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An insulating container prevents heat-flow through its walls ... in either direction.

Its job is to keep the drink at the same temperature it was when you poured it

into the flask. It doesn't need to "know" anything in order to do that. It only needs

to stop heat from getting past the boundary.

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13y ago

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Related Questions

What can be held in a thermos flask?

Hot drinks such as tea and coffee are usually held in a thermos flask. The flask will keep the drink warm for several hours when one is outside or on the move. Cold drinks can also be kept in them or even non drinking liquids that one wishes to keep at a steady temperature.


Why can a vacuum flask be used to keep cold liquids cold?

A vacuum flask has double walls with a vacuum layer in between, which acts as insulation to prevent heat transfer. This means that cold liquids stored in a vacuum flask will be less affected by external temperatures, helping to keep them cold for longer periods of time.


Must a flask be a good conductor of heat?

No, a flask does not necessarily have to be a good conductor of heat. In fact, many flasks are designed with insulating materials to help maintain the temperature of the liquid inside, whether hot or cold. So, a flask can be effective at keeping beverages hot or cold without being a good conductor of heat.


Can a vacuum flask keep cold liquids cold?

Yes, a vacuum flask can keep cold liquids cold by creating a vacuum between two layers of insulating material, which helps to maintain the temperature of the liquid inside the flask. This insulation prevents external temperature changes from affecting the liquid inside, allowing it to stay cold for an extended period of time.


What is A container to keep drinks cold?

A flask. It also keeps drinks hot.


What is the name of the thing used to keep liquids warm or cold?

Vacuum flask.


What is a way to keep a drink cold?

Some ways to keep a drink cold include: Put it in the fridge Use ice


Can a thermos flask keep cold water cold?

Yes, a thermos flask can keep cold water cold for several hours due to its insulated design that helps to maintain the temperature of the liquid inside. It is more effective at keeping beverages hot, but it can also help to preserve the cold temperature of water for a decent amount of time.


How does a vacuum flask keep hot liquids hot and cold liquids cold?

A vacuum flask is designed with a double-walled construction. The inner wall is coated with a reflective coating to prevent radiation heat transfer, while the space between the walls is vacuum-sealed to prevent heat conduction. This insulation helps to maintain the temperature of the liquid inside, whether hot or cold.


How long does a stubby holder keep a drink cold?

There is no real answer as to how long a Stubby holder will keep a drink cold only that it does keep it cold. There's even a scientific study done by the University of Washington in Seattle that proves they keep a drink cold by reducing the condensation.


What cup would you use to keep a drink cold?

use a metal container to keep a drink very full


How do you keep pop cold?

Put it in the fridge. Then you drink it.