Principle Of Hot Water Bottle

- Sep 21, 2019-

The ability of thermos to retain heat is determined by the structural characteristics of the thermos. Instead, the hot water bottle consists of two thin glass shells, with air pumped between them and one side coated with a thin layer of silver. A hot water bottle has a much thinner opening than its "body" and can be corked. It is this construction that makes the thermos a "hot-hearted, cold-looking" thermos