"I pour hot water into a metal container. The inside surface of the container gets hot." It is quite clear the inside surface gets hot due to conduction (criteria of process is satisfied). What i am not so sure about is whether radiation is involved. Theory and some gut instinct tells me there should be. But if this were the case, then wont radiation be present (though it may not be the doninant process however) in all thermal applications which involve conduction as well? Thanks in advance for the guidance.