how does a thermos flask maintain the temperature of liquids kept in it?
Answers
A flask or a thermos keeps hot liquids hot and cold liquids cold. a flask retains the temperature of the liquid that is kept inside the thermos. The basic principle behind the working of a flask is to insulate the substance from the outside air so that no heat transfer takes place. When there is no heat transfer, the temperature of the substance remains the same. Hence there is a need to use insulators inside the thermos.
Answer:
here your answer
mark me as brainlist
Explanation:
the inner part of a thermos flask is a seamless container– usually made of glass. it blown into a mould while the glass is molten– and formed so that there is a thin layers of space between the inside and outside walls. the air between the two layers is sucked out – creating a vaccum since heat cannot travel well through a vaccum, the liquid inside the flask stays hot ( or cold) for a long time....