Physics for IGCSE & O level - Thermal Effects (Section 8 - No. 12)
What are the primary components of a thermos flask that work to minimize heat transfer?
A vacuum between the walls.
A shiny inner surface.
A thick outer surface.
A tightly sealed lid.
ব্যাখ্যা
These features of a thermos flask help minimize heat transfer through radiation, conduction and convection.