Termo

The video explains how a thermos maintains the temperature of its contents by using thermal insulation. It describes the structure of a thermos, which includes an outer wall and an inner glass envelope, and how the vacuum between these layers prevents heat transfer. The video also discusses the role of the lid in maintaining temperature and the limitations of a thermos, as heat can eventually flow through the lid and glass. Overall, the thermos reduces heat flow, keeping liquids hot or cold for extended periods.

Explain how heat transfer occurs through the thermos over time.

Why can't a thermos keep its contents at a constant temperature forever?