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- https://phys.libretexts.org/Courses/Skyline/Survey_of_Physics/12%3A_Thermodynamics/12.04%3A_Introduction_to_the_Second_Law_of_Thermodynamics_-_Heat_Engines_and_their_EfficiencyThe two expressions of the second law of thermodynamics are: (i) Heat transfer occurs spontaneously from higher- to lower-temperature bodies but never spontaneously in the reverse direction; and (ii) ...The two expressions of the second law of thermodynamics are: (i) Heat transfer occurs spontaneously from higher- to lower-temperature bodies but never spontaneously in the reverse direction; and (ii) It is impossible in any system for heat transfer from a reservoir to completely convert to work in a cyclical process in which the system returns to its initial state. Irreversible processes depend on path and do not return to their original state. Cyclical processes are processes that return to the
- https://phys.libretexts.org/Bookshelves/College_Physics/College_Physics_1e_(OpenStax)/15%3A_Thermodynamics/15.03%3A_Introduction_to_the_Second_Law_of_Thermodynamics_-_Heat_Engines_and_their_EfficiencyThe two expressions of the second law of thermodynamics are: (i) Heat transfer occurs spontaneously from higher- to lower-temperature bodies but never spontaneously in the reverse direction; and (ii) ...The two expressions of the second law of thermodynamics are: (i) Heat transfer occurs spontaneously from higher- to lower-temperature bodies but never spontaneously in the reverse direction; and (ii) It is impossible in any system for heat transfer from a reservoir to completely convert to work in a cyclical process in which the system returns to its initial state. Irreversible processes depend on path and do not return to their original state. Cyclical processes are processes that return to the
- https://phys.libretexts.org/Workbench/PH_245_Textbook_V2/07%3A_Module_6_-_Thermodynamics/7.02%3A_Objective_6.b./7.2.07%3A_Reversible_and_Irreversible_ProcessesA reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path...A reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path of the process. An irreversible process is what we encounter in reality almost all the time. The system and its environment cannot be restored to their original states at the same time.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019v2/Book%3A_Custom_Physics_textbook_for_JJC/14%3A_Thermodynamics/14.12%3A_Reversible_and_Irreversible_ProcessesA reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path...A reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path of the process. An irreversible process is what we encounter in reality almost all the time. The system and its environment cannot be restored to their original states at the same time.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019/Book%3A_Physics_(Boundless)/13%3A_Thermodynamics/13.2%3A_The_Second_Law_of_Thermodynamics/Reversible_and_Irreversible_ProcessesA reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path...A reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path of the process. An irreversible process is what we encounter in reality almost all the time. The system and its environment cannot be restored to their original states at the same time.
- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_II_-_Thermodynamics_Electricity_and_Magnetism_(OpenStax)/04%3A_The_Second_Law_of_Thermodynamics/4.02%3A_Reversible_and_Irreversible_ProcessesA reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path...A reversible process is a process in which the system and environment can be restored to exactly the same initial states that they were in before the process occurred, if we go backward along the path of the process. An irreversible process is what we encounter in reality almost all the time. The system and its environment cannot be restored to their original states at the same time.
