many vacuum flasks have steel walls instead of glass.
how would this effect how fast some hot coffee cools?
The steel is
stainless (shiny). Thatreflects heat back in (radiation). It is cheaper to do this than to mirror on glass to do the same thing.
how would this effect how fast some hot coffee cools?
stainless (shiny). Thatreflects heat back in (radiation). It is cheaper to do this than to mirror on glass to do the same thing.