I know that delta h(Enthalpy) is heat and it is also the total kinetic energy of the system. Temperature is the average kinetic energy of the system from enthalpy. For example, a bathtub may have the same temperature as the ocean, but the total enthalpy will be greater for the ocean. How do we measure the average kinetic energy of heat to get temperature? Is it every atom's movement(rotational bonds, friction) of kinetic energy divided by the number of each individual movements, or is it divided by time?