Recent content by Broodle

I mean that the average translational kinetic energy of a hot space seems to get less when next to a colder space. And this seems to happen spontaneously or without any external interference. For example, I am in my apartment and it's all warm in here. Then I open the door to the hallway where...

Because it just seems to happen automatically - so don't you need a force when something happens automatically?

What force is responsible for the phenomenon of heat transfer?

Can gravity be expressed in terms of the second law of thermodynamics?