Does cold radiate outwards? What’s the process by which a hot object becomes cold?

Question

Does cold radiate outwards? What’s the process by which a hot object becomes cold?

In: Physics

Answer 1

Heat is a type of energy (thermal energy). In this scenario you can think of it like water. It ‘flows’ from a hot thing to a cold thing in the same way that water flows downhill from a higher area to a lower one

But eventually, the water levels out. Same with thermal energy. So if there are two objects next to each other and one is 100 degrees and the other is 0 degrees, eventually they’ll both be 50 degrees.