Interactive Simulator · Build a Vacuum Flask

Thermal Applications

A vacuum flask keeps a drink hot by shutting down every route heat can take. A vacuum between the walls stops conduction and convection, because there are almost no particles to carry energy across. Silvered walls reflect infrared back in, stopping radiation. A stopper traps the warm air and stops evaporation at the top. Switch on the features to keep the drink above the target.

Mission Keep the drink above 65 °C after a long wait. Round 1Streak 0Best 0
Which feature stops heat loss by radiation?
conduction and convectionlosing
radiationlosing
final temperature90 °C
vacuum stops conduction and convection; silver stops radiation; stopper stops evaporation.