Here's a breakdown:
* Heat transfer: Heat always flows from a region of higher temperature to a region of lower temperature. This is the fundamental principle of thermodynamics.
* Thermal equilibrium: When two objects are in contact and have the same temperature, there is no longer a temperature difference driving the flow of heat. Therefore, heat transfer ceases.
Important notes:
* Perfect insulation: If the objects are perfectly insulated from each other, they may have different temperatures and still not experience heat transfer. However, perfect insulation is nearly impossible to achieve in the real world.
* Dynamic equilibrium: Even in thermal equilibrium, there might still be microscopic heat exchange occurring, but the net flow of heat is zero.
Let me know if you have any other questions!
