Complex sentence: In later combination with the law of energy conservation, the caloric theory still shows a very valuable physical insight into some aspects of heat, for example, the emergence of Laplace's equation and Poisson's equation in the problems of spatial distribution of heat and temperature.
Split into simpler sentences: In later combination with the law of energy conservation, the caloric theory still shows a very valuable physical insight into some aspects of heat. For example, the emergence of Laplace's equation and Poisson's equation in the problems of spatial distribution of heat and temperature.