The space in between the inner edge and outer edge of the thermos flask is a vacuum; and the lid contains convection-repelling material. This means no heat can be obtained, and no heat can be lost; thus, the temperature of the drink is kept the same.

by Anonymous 13 years ago

(Some Random Anujan): I was just about to say that

by Anonymous 13 years ago

(Some Random Anujan): Very true, I don't think this post was meant seriously though...

by Anonymous 13 years ago

it's sort of a joke, people ... o___O

by Anonymous 13 years ago