Tumbler, Thermos (aka vase , jar Dewar , average Thermostats ) is a household tools used for containing boiling water or warm water, or ice , or other liquids, food, objects to be protected Store at a temperature different from the ambient temperature (temperature above, or below, ambient temperature).

Tumbler The thermos was invented by Scottish physicist and chemist, James Dewar (1842-1923) in 1892 or 19th century thanks to an improvement from Newton’s calorimeter barrel. [1] Because Newton’s machine was bulky, many of the parts made it difficult to maintain and clean under laboratory conditions. For accurate experiments, the calorimeter requirement is to provide maximum isolation between the temperature inside the vessel and the outside environment. Since then, Mr. Dewar has built a thermo-insulating flask, initially as a laboratory device, and then popularized into household appliances as it is today. Dewar’s design quickly became a commercial item in 1904 when two German glass engravers, Reinhold Burger and Albert Aschenbrenner, discovered that it could be used to keep drinks hot cold and hot drinks.