Question

What is thermos flask??​

Answer 1

Answer:

A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings. Invented by Sir James Dewar in 1892, the vacuum flask consists of two flasks, placed one within the other and joined at the neck. The gap between the two flasks is partially evacuated of air, creating a near-vacuum which significantly reduces heat transfer by conduction or convection.

Explanation:

Answer 2

Answer: THERMO FLASK is something used to keep the temp of some substance constant by keeping it not to lost its energy by isolating it

Vaccum flask is small eg for it. it provides an adiabatic condition thereby not losing energy

Explanation:

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