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Related Concept Videos

Reversible and Irreversible Processes01:14

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The thermodynamic processes can be classified into reversible and irreversible processes. The processes that can be restored to their initial state are called reversible processes. It is only possible if the process is in quasi-static equilibrium, i.e., it takes place in infinitesimally small steps, and the system remains at equilibrium However, these are ideal processes and do not occur naturally. An ideal system undergoing a reversible process is always in thermodynamic equilibrium within...
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Elisabeth Kübler-Ross significantly advanced psychology's understanding of the process of dying with her influential book, On Death and Dying (1969). She focused on studying terminally ill individuals and outlined five stages commonly experienced when coping with death: denial, anger, bargaining, depression, and acceptance.
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Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
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An exchange reaction is a chemical reaction in which both synthesis and decomposition occur, chemical bonds are both formed and broken, and chemical energy is absorbed, stored, and released.
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The meaning of illness is individualized to each person who experiences an alteration in health. In contrast, disease is a medical term indicating a pathological change in the structure and function of the body or mind. It is a condition that has specific symptoms and boundaries.
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In the Carnot engine, which achieves the maximum efficiency between two reservoirs of fixed temperatures, the total change in entropy is zero. The observation can be generalized by considering any reversible cyclic process consisting of many Carnot cycles. Thus, it can be stated that the total entropy change of any ideal reversible cycle is zero.
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Updated: Jul 26, 2025

Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis
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Is Death Irreversible?

Nada Gligorov1

  • 1Alden March Bioethics Institute at Albany Medical College, Albany, New York, USA.

The Journal of Medicine and Philosophy
|June 17, 2023
PubMed
Summary

Death remains irreversible despite technological advancements. This paper explores the biological definition of death, emphasizing that irreversibility is a core component, grounded in biological facts and current physical possibilities for reversal.

Area of Science:

  • Philosophy of Medicine
  • Bioethics
  • Medical Law

Background:

  • Current legal definitions of death rely on irreversible cessation of circulation/respiration or neurologic function.
  • Emerging technologies challenge the concept of irreversibility in defining death.
  • Distinction between commonsense and biological definitions of death is explored.

Purpose of the Study:

  • To determine if death should be defined as an irreversible state.
  • To clarify the scope of irreversibility within the biological definition of death.
  • To examine the relationship between commonsense and biological death concepts.

Main Methods:

  • Philosophical analysis of the concept of death and irreversibility.
  • Examination of biological facts underpinning the definition of death.
Keywords:
BrainExbrain deathcardiopulmonary deathdeathirreversibility

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  • Argumentation based on a posteriori reasoning and physical possibilities.

    • Main Results:

    • The commonsense concept of death is fundamentally based on biological facts.
    • Any definition of death is a posteriori, meaning it's based on empirical evidence.
    • Irreversibility is an inherent aspect of death due to its actual irreversible nature.

    Conclusions:

    • Irreversibility in the definition of death is constrained by current physical possibilities for process reversal.
    • Despite technological progress, death is fundamentally and currently irreversible.
    • The biological definition of death accurately reflects the irreversible nature of the phenomenon.