termospullot
Termospullo, also known as a vacuum flask or thermos, is a container designed to keep its contents at a constant temperature for extended periods. Its primary function is to minimize heat transfer through conduction, convection, and radiation. The core of a termospullo is a double-walled glass or metal inner vessel, with a vacuum sealed between the two walls. This vacuum is a very effective insulator, greatly reducing heat loss or gain through conduction and convection. The inner and outer surfaces of the vacuum space are often coated with a reflective material, such as silver, to further reduce heat transfer by radiation.
The cap or stopper of a termospullo is also designed to be an effective insulator, typically made