The state where two bodies in physical contact have identical temperatures is called thermal equilibrium.

Here's why:

* Temperature: A measure of the average kinetic energy of the particles within a substance.

* Thermal Contact: When two bodies are in contact, they can exchange heat energy.

* Heat Flow: Heat energy flows from a region of higher temperature to a region of lower temperature.

* Equilibrium: When the two bodies reach the same temperature, there is no longer a net flow of heat between them, and they are said to be in thermal equilibrium.

Let me know if you'd like more detail on any of these concepts!