I am studying heat transfer and have learned there are three kinds of heat transfer: conduction, convection, and radiation. Some examples are:
- Touching a stove and being burned
- Ice cooling down your hand
- Boiling water by thrusting a red-hot piece of iron into it
- Hot air rising, cooling, and falling (convection currents)
- An old-fashioned radiator (creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom).
- Heat from the sun warming your face
- Heat from a lightbulb
- Heat from a fire
- Heat from anything else which is warmer than its surroundings.
I have heard that for a vacuum flask all three types are important. Are there other examples where all three are important?