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Heat can be transferred in three ways: conduction, convection, radiation. In a vacuum flask, conduction and convection are greatly reduced through a vacuum (hence the name!) between two glass layers, whereas radiation is greatly reduced by the mirror coating on the same glass. As a result, heat takes much longer to get out - or in, since you can also keep cold things in a vacuum flask.Note that no vacuum flask will keep things hot (or cold) indefinitely; it simply takes much longer for hot things to cool down, or for cold things to heat up.
Wiki User
∙ 7y ago
Wiki User
∙ 11y agobecause glass absorb heat and does not reflect heat
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Is a glass of ice-tea also a solution?
Yes, because ice tea is the solvent in a glass or something but the answer is definitely yes iced tea is a solution.
Is Hot tea mixture OR substance?
It is both a substance and mixture. If you meant "Is hot tea a mixture or compound?" then it is a mixture.
What is the pH of hot tea?
The pH of tea is 3-4.
Why does sugar stay when tea dissolves?
tea doesnt dissolve its the sugar that does
Why a glass of ice water often has water droplets which form on the outside while a hot cup of tea or soup does not?
the main reason is condensation of water vapour in the air to water droplets
What is a tea tile used for?
It is used to protect a table or other surface from a hot teapot. Place the tile on the table, place the hot teapot on the tile.
How does an infuser in glass teapot work?
Loose tea is placed into the infuser, which is sitting in the mug. Hot water is poured over the tea and allowed to steep the recommended time (usually 3-5 minutes for black tea). Remove infuser before drinking as tea will continue to brew as long as it sits in the mug and may get bitter.
Why does tea cold earlier in glass as compare to teapot by scientifically?
because tea is exposed to surrounding,to get thermal equilibrium it becomes cold
Does the material of a teapot affect the quality of tea?
Yes, it can. The recommended materials for teapots are nonporous such as glass, pottery, and metal. If you use a plastic teapot it will leach chemicals into your tea and make it taste like plastic.
What is a oolong tea brewer?
teapot teapot
What is a teapot handle for?
teapot handle is for serving tea
What starts with a t has a t in it and ends with t?
A teapot. The word teapot starts and ends with a T. One would use it at tea (afternoon tea). During afternoon tea, the teapot would have tea in it.
What begins with T ends with T and has Tea in it?
Teapot!
What starts with tea and ends with tea and is full of tea?
Teapot.
What sort of teapot keeps tea hottest?
Place your fingers inside the tea! i know it sounds stupid but it acturally works! It takes your body heat n helps the tea to stay hot! Its so amazing! i have tried this many times and it works for more than half an hour! Its amazing....
What begins with t and ends with t and is filled with tea?
Teapot!
Can you heat a glass teapot on an electric stove?
Yes, I've had my Termisil teapot for over a year and I put it directly on the heating element - I have an electric stove. Be Careful, the lid of the teapot sometimes falls off when you are pouring tea.
