What Is an Example of an Isothermal Process?

An isothermal process is a change in a system in which the temperature of the system isn't affected (the change in temperature equals zero). Some examples of systems undergoing isothermal processes are a refrigerator or a computer utilizing some sort of heat sink and warm-blooded animals maintaining an internal temperature.

All isothermal process exchange heat with their environment in some way as a means of maintaining the system's temperature; refrigerators and computers, as well as anything that utilizes a heat sink in its design, transfer extra heat out of the closed systems and into another medium that will disperse the heat away from it. Warm-blooded animals exhaust extra heat and maintain internal temperature through perspiring and breathing.