function of thermos flask in brief
Answers
Answer:
The technical name of a thermos is a vacuum flask (you will know the reason why, shortly). To keep your drinks hot or cold, it minimizes heat transfer due to conduction and radiation. Convection is not included because convection keeps the temperature in a liquid even. You don’t want to drink something that is hot on the first gulp and gets colder and colder until the last one.
Answer:
function of the Thermos flask .
Explanation:
when when a hot substances is placed in a thermos flask, the heat going cut gets reflected due to the shining surface of the inner tube. hence, heat is not radiated. neither conduction nor convection of the hit of you are because of the vacuum. as a result, heat is not transferred to the outer cooler region and is retained inside for a long time. still,a little heat is lost from around the lead and by a small amount of conduction through the glass. therefore, the hot substances does not remain as hot after 2-3 hours. great scientist sir James dewar was a Scottish scientist. he made the first thermos flask in 1892. that is why it is called dewar flask. even today,a dewar flask is used for keeping a substance is cold or hot. the the thermos flask is a double walled flask
I hope that this answer is a correct ans
please give me brilliant marks please.