Newton's Law of Cooling is a fundamental principle in thermodynamics and heat transfer that describes how the temperature of an object changes over time when it is in contact with a surrounding medium at a different temperature. This law is often used to model the cooling or heating of objects in various contexts, such as in weather forecasting, food preservation, and engineering.

Newton's Law of Cooling can be stated as follows:

"The rate of change of the temperature of an object is directly proportional to the difference between its temperature and the ambient (surrounding) temperature."