An isothermal process is a thermodynamic process in which the temperature of a system remains constant while it undergoes a change in pressure and volume. This means that any heat added to the system is exactly balanced by the work done by the system, ensuring that the internal energy does not change. Isothermal processes are often idealized scenarios, commonly associated with the behavior of gases. In an isothermal process involving an ideal gas, the relationship between pressure and volume can be described by Boyle's Law, which states that the product of pressure and volume remains constant at a given temperature. This principle is crucial in various applications, including refrigeration and heat engines, where maintaining a constant temperature is essential for efficiency.