Results for 'Laws of Thermodynamics'

978 found
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  1. The Second Law of Thermodynamics and the Psychological Arrow of Time.Meir Hemmo & Orly Shenker - 2019 - British Journal for the Philosophy of Science 73 (1):85-107.
    Can the second law of thermodynamics explain our mental experience of the direction of time? According to an influential approach, the past hypothesis of universal low entropy also explains how the psychological arrow comes about. We argue that although this approach has many attractive features, it cannot explain the psychological arrow after all. In particular, we show that the past hypothesis is neither necessary nor sufficient to explain the psychological arrow on the basis of current physics. We propose two (...)
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  2.  78
    Leibniz and the First Law of Thermodynamics.Kateřina Lochmanová - 2024 - Teorie Vědy / Theory of Science 46 (1):89-114.
    The article presents the German philosopher G. W. Leibniz as a key precursor of the First Law of Thermodynamics. In this way, Leibniz tried to oppose Newton, who seems to have completely rejected the First Law of Thermodynamics, while at the same time remarkably anticipating the Second. Based on his polemics not only with Newton, from whose Laws of Motion thermodynamics originates, and with his advocate Samuel Clarke, but also with René Descartes, whose conception Leibniz partially (...)
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  3. Kuhn’s ‘5th Law of Thermodynamics’: Measurement, Data, and Anomalies.Alisa Bokulich & Federica Bocchi - 2024 - In K. Brad Wray (ed.), Kuhn's The Structure of Scientific Revolutions at 60. Cambridge University Press.
    We reconstruct Kuhn’s philosophy of measurement and data paying special attention to what he calls the “fifth law of thermodynamics”. According to this "law," there will always be discrepancies between experimental results and scientists’ prior expectations. The history of experiments to determine the values of the fundamental constants offers a striking illustration of Kuhn’s fifth law of thermodynamics, with no experiment giving quite the expected result. We highlight the synergy between Kuhn’s view and the systematic project of iteratively (...)
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  4. Everettian Formulation of the Second Law of Thermodynamics.Yu Feng - manuscript
    The second law of thermodynamics is traditionally interpreted as a coarse-grained result of classical mechanics. Recently its relation with quantum mechanical processes such as decoherence and measurement has been revealed in literature. In this paper we will formulate the second law and the associated time irreversibility following Everett’s idea: systems entangled with an object getting to know the branch in which they live. Accounting for this self-locating knowledge, we get two forms of entropy: objective entropy measuring the uncertainty of (...)
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  5. Entanglement theory and the second law of thermodynamics.Martin Plenio - unknown
    Entangled quantum systems can be harnessed to transmit, store, and manipulate information in a more efficient and secure way than possible in the realm of classical physics. Given this resource character of entanglement, it is an important problem to characterize ways to manipulate it and meaningful approaches to its quantification. This is the objective of entanglement theory.
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  6. Statistical mechanics and thermodynamics: A Maxwellian view.Wayne C. Myrvold - 2011 - Studies in History and Philosophy of Science Part A 42 (4):237-243.
    One finds, in Maxwell's writings on thermodynamics and statistical physics, a conception of the nature of these subjects that differs in interesting ways from the way that they are usually conceived. In particular, though—in agreement with the currently accepted view—Maxwell maintains that the second law of thermodynamics, as originally conceived, cannot be strictly true, the replacement he proposes is different from the version accepted by most physicists today. The modification of the second law accepted by most physicists is (...)
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  7. On the possibility of stable regularities without fundamental laws.Aldo Filomeno - 2014 - Dissertation, Autonomous University of Barcelona
    This doctoral dissertation investigates the notion of physical necessity. Specifically, it studies whether it is possible to account for non-accidental regularities without the standard assumption of a pre-existent set of governing laws. Thus, it takes side with the so called deflationist accounts of laws of nature, like the humean or the antirealist. The specific aim is to complement such accounts by providing a missing explanation of the appearance of physical necessity. In order to provide an explanation, I recur (...)
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  8. Video-Based Instruction as a Remediation in Teaching Thermodynamics among Prospective Science Teachers.Resty Samosa, Kimberly Castro, Christian Roel Gabriel, Isaiah Yvette Lozano, Christian Paul Paglicawan & Reden Precalin - 2023 - Studies in Technology and Education 2 (1):43-51.
    This study examined the effectiveness of video-based instruction (VBI) as a learning remediation strategy in teaching Laws of Thermodynamics among Prospective Science Teachers at Bulacan State University. The researchers employed – a one-group pretest–posttest design to assess the 35 prospective science teachers who were purposively selected. More so, data was gathered through researcher-made pretest-posttest achievement tests and an adapted Likert survey questionnaire. The data was treated descriptively and inferentially. The findings showed that VBI as a learning remediation strategy (...)
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  9. On the probabilistic character of irreducible mental causation.Dejan R. Dimitrijević - 2024 - Synthese 203 (6):1-27.
    It has recently been remarked that the argument for physicalism from the causal closure of the physical is incomplete. It is only effective against mental causation manifested in the action of putative mental forces that lead to acceleration of particles in the nervous system. Based on consideration of anomalous, physically unaccounted-for correlations of neural events, I argue that irreducible mental causation whose nature is at least prima facie probabilistic is conceivable. The manifestation of such causation should be accompanied by a (...)
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  10. Brain activity and cognition: a connection from thermodynamics and information theory.Guillem Collell & Jordi Fauquet - 2015 - Frontiers in Psychology 6.
    The connection between brain and mind is an important scientific and philosophical question that we are still far from completely understanding. A crucial point to our work is noticing that thermodynamics provides a convenient framework to model brain activity, whereas cognition can be modeled in information-theoretical terms. In fact, several models have been proposed so far from both approaches. A second critical remark is the existence of deep theoretical connections between thermodynamics and information theory. In fact, some well-known (...)
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  11. Maxwell’s Demon in Quantum Mechanics.Orly Shenker & Meir Hemmo - 2020 - Entropy 22 (3):269.
    Maxwell’s Demon is a thought experiment devised by J. C. Maxwell in 1867 in order to show that the Second Law of thermodynamics is not universal, since it has a counter-example. Since the Second Law is taken by many to provide an arrow of time, the threat to its universality threatens the account of temporal directionality as well. Various attempts to “exorcise” the Demon, by proving that it is impossible for one reason or another, have been made throughout the (...)
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  12. Early Quantum Theory Genesis: Reconciliation of Maxwellian Electrodynamics, Thermodynamics and Statistical Mechanics.Rinat M. Nugayev - 2000 - Annales de la Fondation Louis de Broglie 25 (3-4):337-362.
    Genesis of the early quantum theory represented by Planck’s 1897-1906 papers is considered. It is shown that the first quantum theoretical schemes were constructed as crossbreed ones composed from ideal models and laws of Maxwellian electrodynamics, Newtonian mechanics, statistical mechanics and thermodynamics. Ludwig Boltzmann’s ideas and technique appeared to be crucial. Deriving black-body radiation law Max Planck had to take the experimental evidence into account. It forced him not to deduce from phenomena but to use more theory instead. (...)
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  13. How Anti-Humeans Can Embrace a Thermodynamic Reduction of Time’s Causal Arrow.Eli I. Lichtenstein - 2021 - Philosophy of Science 88 (5):1161-1171.
    Some argue that time’s causal arrow is grounded in an underlying thermodynamic asymmetry. Often, this is tied to Humean skepticism that causes produce their effects, in any robust sense of ‘produce’. Conversely, those who advocate stronger notions of natural necessity often reject thermodynamic reductions of time’s causal arrow. Against these traditional pairings, I argue that ‘reduction-plus-production’ is coherent. Reductionists looking to invoke robust production can insist that there are metaphysical constraints on the signs of objects’ velocities in any state, given (...)
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  14. In the light of time.Arto Annila - 2009 - Proceedings of Royal Society A 465:1173–1198.
    The concept of time is examined using the second law of thermodynamics that was recently formulated as an equation of motion. According to the statistical notion of increasing entropy, flows of energy diminish differences between energy densities that form space. The flow of energy is identified with the flow of time. The non-Euclidean energy landscape, i.e. the curved space–time, is in evolution when energy is flowing down along gradients and levelling the density differences. The flows along the steepest descents, (...)
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  15. The Decoherent Arrow of Time and the Entanglement Past Hypothesis.Jim Al-Khalili & Eddy Keming Chen - 2024 - Foundations of Physics 54 (49).
    If an asymmetry in time does not arise from the fundamental dynamical laws of physics, it may be found in special boundary conditions. The argument normally goes that since thermodynamic entropy in the past is lower than in the future according to the Second Law of Thermodynamics, then tracing this back to the time around the Big Bang means the universe must have started off in a state of very low thermodynamic entropy: the Thermodynamic Past Hypothesis. In this (...)
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  16. Time's Arrow in a Quantum Universe: On the Status of Statistical Mechanical Probabilities.Eddy Keming Chen - 2020 - In Valia Allori (ed.), Statistical Mechanics and Scientific Explanation: Determinism, Indeterminism and Laws of Nature. Singapore: World Scientific. pp. 479–515.
    In a quantum universe with a strong arrow of time, it is standard to postulate that the initial wave function started in a particular macrostate---the special low-entropy macrostate selected by the Past Hypothesis. Moreover, there is an additional postulate about statistical mechanical probabilities according to which the initial wave function is a ''typical'' choice in the macrostate. Together, they support a probabilistic version of the Second Law of Thermodynamics: typical initial wave functions will increase in entropy. Hence, there are (...)
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  17. The physics of implementing logic: Landauer's principle and the multiple-computations theorem.Meir Hemmo & Orly Shenker - 2019 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 68:90-105.
    This paper makes a novel linkage between the multiple-computations theorem in philosophy of mind and Landauer’s principle in physics. The multiple-computations theorem implies that certain physical systems implement simultaneously more than one computation. Landauer’s principle implies that the physical implementation of “logically irreversible” functions is accompanied by minimal entropy increase. We show that the multiple-computations theorem is incompatible with, or at least challenges, the universal validity of Landauer’s principle. To this end we provide accounts of both ideas in terms of (...)
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  18. The Mathematical Representation of the Arrow of Time.Meir Hemmo & Orly Shenker - 2012 - Iyyun 61:167-192.
    This paper distinguishes between 3 meanings of reversal, all of which are mathematically equivalent in classical mechanics: velocity reversal, retrodiction, and time reversal. It then concludes that in order to have well defined velocities a primitive arrow of time must be included in every time slice. The paper briefly mentions that this arrow cannot come from the Second Law of thermodynamics, but this point is developed in more details elsewhere.
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  19. Who's Afraid of Maxwell's Demon—and Which One?Craig Callender - 2002 - AIP Conference Proceedings 643.
    In 1866 J.C. Maxwell thought he had discovered a Maxwellian demon—though not under that description, of course [1]. He thought that the temperature of a gas under gravity would vary inversely with the height of the column. From this he saw that it would then be possible to obtain energy for work from a cooling gas, a clear violation of Thompson’s statement of the second law of thermodynamics. This upsetting conclusion made him worry that “there remains as far as (...)
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  20. مرگ حرارتی و پیامدهای الهیاتی آن.Javad Navaei & سیدمحمدکاظم علوی - 2019 - دانشگاه امام صادق علیه السلام 17 (1):233-253.
    According to the second law of thermodynamics, irreversible processes in an isolated system move towards the goal of reaching maximum entropy. In this state, mechanical work is converted to thermal energy and thermodynamic equilibrium occurs; which is determined by the equilibrium in temperature, pressure, etc. Assuming that the universe is an isolated system, the second law of thermodynamics states that the fate of the universe is a state of thermodynamic equilibrium in which all mechanical energies are converted to (...)
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  21. From the History of Physics to the Discovery of the Foundations of Physics,.Antonino Drago - manuscript
    FROM THE HISTORY OF PHYSICS TO THE DISCOVERY OF THE FOUNDATIONS OF PHYSICS By Antonino Drago, formerly at Naples University “Federico II”, Italy – drago@unina,.it (Size : 391.800 bytes 75,400 words) The book summarizes a half a century author’s work on the foundations of physics. For the forst time is established a level of discourse on theoretical physics which at the same time is philosophical in nature (kinds of infinity, kinds of organization) and formal (kinds of mathematics, kinds of logic). (...)
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  22. Physics and Philosophy: in the historical context of 19th century.Alireza Mansouri - 2023 - Tehran: Nashre Kargadan.
    The book's purpose is to provide readers with a comprehensive understanding of the interplay between physics and philosophy in the historical context of the 19th century. Through an elaborate examination of the influence of mechanistic philosophy, the evolution of ontology, and the emergence of energy, the author aims to explain the phenomenological laws of thermodynamics in the framework of the mechanical approach. Additionally, the book delves into the introduction of field theory and the beginning decline of the mechanical (...)
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  23. Probabilities in Statistical Mechanics.Wayne C. Myrvold - 2016 - In Alan Hájek & Christopher Hitchcock (eds.), The Oxford Handbook of Probability and Philosophy. Oxford: Oxford University Press. pp. 573-600.
    This chapter will review selected aspects of the terrain of discussions about probabilities in statistical mechanics (with no pretensions to exhaustiveness, though the major issues will be touched upon), and will argue for a number of claims. None of the claims to be defended is entirely original, but all deserve emphasis. The first, and least controversial, is that probabilistic notions are needed to make sense of statistical mechanics. The reason for this is the same reason that convinced Maxwell, Gibbs, and (...)
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  24. On the fundamental meaning of the principle of least action and consequences for a "dynamic" quantum physics.Helmut Tributsch - 2016 - Journal of Modern Physics 7:365-374.
    The principle of least action, which has so successfully been applied to diverse fields of physics looks back at three centuries of philosophical and mathematical discussions and controversies. They could not explain why nature is applying the principle and why scalar energy quantities succeed in describing dynamic motion. When the least action integral is subdivided into infinitesimal small sections each one has to maintain the ability to minimise. This however has the mathematical consequence that the Lagrange function at a given (...)
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  25. (1 other version)How Entropy Explains the Emergence of Consciousness: The Entropic Theory.Peter C. Lugten - 2024 - Journal of Neurobehavioral Sciences 11 (1):10-18.
    Background: Emergentism as an ontology of consciousness leaves unanswered the question as to its mechanism. Aim: I aim to solve the Body-Mind problem by explaining how conscious organisms emerged on an evolutionary basis at various times in accordance with an accepted scientific principle, through a mechanism that cannot be understood, in principle. Proposal: The reason for this cloak of secrecy is found in a seeming contradiction in the behaviour of information with respect to the first two laws of (...). Information, the microstate of particles within an isolated system’s macrostate, can, like first law energy, be neither created nor destroyed, yet the information in the system, like second law entropy, will inevitably increase. To explain information increasing without being created, Laplace’s demon is invoked, able to predict where each particle is destined. This doesn’t work for emerging events like consciousness, which are unpredictable. This can be understood in terms of the derivation of entropy, and the emergence of classical physics, from the Relativistic Transactional Interpretation of Quantum Mechanics. I propose that the increased entropy in a time-irreversible, unpredictable (emergent) isolated system requires the simultaneous deletion of information concerning the steps, or calculations, involved. Conclusion: Thus, the steps leading to consciousness are immediately destroyed and must remain a mystery. Implications include that entropy, not panpsychism, is the Universal principle generative of consciousness, that our being conscious proves that we are not predetermined, and that consciousness requires assuming an “entropy debt” that can only be repaid by living organisms, prohibiting the emergence of conscious machines. (shrink)
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  26. A BRIEF OUTLINE OF THE POSSIBLE BASICS OF COSMOLOGY IN THE 22nd CENTURY, AND WHAT IT MEANS FOR RELIGION.Rodney Bartlett - manuscript
    This article’s conclusion is that the theories of Einstein are generally correct and will still be relevant in the next century (there will be modifications necessary for development of quantum gravity). Those Einsteinian theories are Special Relativity, General Relativity, and the title of a paper he published in 1919 which asked if gravitation plays a role in the composition of elementary particles of matter. This paper was the bridge between General Relativity and the Unified Field Theory he sought during the (...)
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  27. Statistical Mechanical Imperialism.Brad Weslake - 2014 - In Alastair Wilson (ed.), Chance and Temporal Asymmetry. Oxford: Oxford University Press. pp. 241-257.
    I argue against the claim, advanced by David Albert and Barry Loewer, that all non-fundamental laws can be derived from those required to underwrite the second law of thermodynamics.
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  28. Why did life emerge?Arto Annila & Annila E. Annila A. - 2008 - International Journal of Astrobiology 7 (3-4):293–300.
    Many mechanisms, functions and structures of life have been unraveled. However, the fundamental driving force that propelled chemical evolution and led to life has remained obscure. The second law of thermodynamics, written as an equation of motion, reveals that elemental abiotic matter evolves from the equilibrium via chemical reactions that couple to external energy towards complex biotic non-equilibrium systems. Each time a new mechanism of energy transduction emerges, e.g., by random variation in syntheses, evolution prompts by punctuation and settles (...)
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  29. (2 other versions)The Fundamental Interrelationships Model – An Alternative Approach to the Theory of Everything, Part 1.Gavin Huang - 2022 - In Huang Gavin (ed.), Behind Civilization: the fundamental rules in the universe. Sydney, Australia: Gavin Huang. pp. 400-.
    The quest for a unified “Theory of Everything” that explains the fundamental nature of the universe has long been a holy grail for scientists and philosophers, dating back to the ancient Greeks’ search for Arche. -/- So far, the mainstream of research on A Theory of Everything primarily focuses on the lifeless phenomena and laws of physics while ignores the realm of biology. However, a fundamentally different approach to the ToE has been put forward, presenting a viable alternative to (...)
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  30. The Possibility of Empirical Test of Hypotheses About Consciousness.Jean E. Burns - 1996 - In Stuart R. Hameroff, Alfred W. Kaszniak & Alwyn Scott (eds.), Towards a Science of Consciousness. MIT Press. pp. 739--742.
    The possibility of empirical test is discussed with respect to three issues: (1) What is the ontological relationship between consciousness and the brain/physical world? (2) What physical characteristics are associated with the mind/brain interface? (3) Can consciousness act on the brain independently of any brain process?
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  31. The History of Moral Certainty as the Pre-History of Typicality.Mario Hubert - 2024 - Physics and the Nature of Reality: Essays in Memory of Detlef Dürr.
    This paper investigates the historical origin and ancestors of typicality, which is now a central concept in Boltzmannian Statistical Mechanics and Bohmian Mechanics. Although Ludwig Boltzmann did not use the word typicality, its main idea, namely, that something happens almost always or is valid for almost all cases, plays a crucial role for his explanation of how thermodynamic systems approach equilibrium. At the beginning of the 20th century, the focus on almost always or almost everywhere was fruitful for developing measure (...)
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  32. There’s Plenty of Boole at the Bottom: A Reversible CA Against Information Entropy.Francesco Berto, Jacopo Tagliabue & Gabriele Rossi - 2016 - Minds and Machines 26 (4):341-357.
    “There’s Plenty of Room at the Bottom”, said the title of Richard Feynman’s 1959 seminal conference at the California Institute of Technology. Fifty years on, nanotechnologies have led computer scientists to pay close attention to the links between physical reality and information processing. Not all the physical requirements of optimal computation are captured by traditional models—one still largely missing is reversibility. The dynamic laws of physics are reversible at microphysical level, distinct initial states of a system leading to distinct (...)
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  33. Cyclic Mechanics: the Principle of Cyclicity.Vasil Penchev - 2020 - Cosmology and Large-Scale Structure eJournal (Elsevier: SSRN) 2 (16):1-35.
    Cyclic mechanic is intended as a suitable generalization both of quantum mechanics and general relativity apt to unify them. It is founded on a few principles, which can be enumerated approximately as follows: 1. Actual infinity or the universe can be considered as a physical and experimentally verifiable entity. It allows of mechanical motion to exist. 2. A new law of conservation has to be involved to generalize and comprise the separate laws of conservation of classical and relativistic mechanics, (...)
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  34. Conjunctive forks and temporally asymmetric inference.Elliott Sober & Martin Barrett - 1992 - Australasian Journal of Philosophy 70 (1):1 – 23.
    We argue against some of Reichenbach's claims about causal forks are incorrect. We do not see why the Second Law of Thermodynamics rules out the existence of conjunctive forks open to the past. In addition, we argue that a common effect rarely forms a conjunctive fork with its joint causes, but it sometimes does. Nevertheless, we think there is something to be said for Reichenbach's idea that forks of various kinds are relevant to explaining why we know more about (...)
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  35. Utopian Social Delusions in the 21st Century.Starks Michael - 2017 - Henderson,NV, USA: Michael Starks.
    This collection of articles was written over the last 10 years and edited them to bring them up to date (2017). All the articles are about human behavior (as are all articles by anyone about anything), and so about the limitations of having a recent monkey ancestry (8 million years or much less depending on viewpoint) and manifest words and deeds within the framework of our innate psychology as presented in the table of intentionality. As famous evolutionist Richard Leakey says, (...)
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  36. Absorbing the Arrow of Electromagnetic Radiation.Mario Hubert & Charles T. Sebens - 2023 - Studies in History and Philosophy of Science Part A 99 (C):10-27.
    We argue that the asymmetry between diverging and converging electromagnetic waves is just one of many asymmetries in observed phenomena that can be explained by a past hypothesis and statistical postulate (together assigning probabilities to different states of matter and field in the early universe). The arrow of electromagnetic radiation is thus absorbed into a broader account of temporal asymmetries in nature. We give an accessible introduction to the problem of explaining the arrow of radiation and compare our preferred strategy (...)
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    An Appraisal of Two Philosophical Research Programs on the Problem of Time's Arrow.Narges Fathalian & Alireza Mansouri - 2023 - Philosophy of Science 12 (2):189-212.
    The problem of time's arrow has sparked two distinct metaphysical approaches, each stemming from opposing Humean and non-Humean perspectives on laws of nature. This paper contends that these approaches, despite their differences and inherent challenges, ultimately converge on a common goal: to explain time's arrow, we must comprehend the structure of spacetime during the universe's early stages. The problem of time's arrow has sparked two distinct metaphysical approaches, each stemming from opposing Humean and non-Humean perspectives on laws of (...)
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  38. Advances in Black Holes Research.Abraham Barton (ed.) - 2014 - New York: Nova Science Publishers.
    Black holes are extremely relativistic objects. Physical processes around them occur in a regime where the gravitational field is extremely intense. Under such conditions, our representations of space, time, gravity, and thermodynamics are pushed to their limits. In such a situation philosophical issues naturally arise. In this chapter I review some philosophical questions related to black holes. In particular, the relevance of black holes for the metaphysical dispute between presentists and eternalists, the origin of the second law of (...) and its relation to black holes, the problem of information, black holes and hypercomputing, the nature of determinisim, and the breakdown of predictability in black hole space-times. I maintain that black hole physics can be used to illuminate some important problems in the border between science and philosophy, either epistemology and ontology. (shrink)
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  39. Entropy as Root Metaphor.Eric Zencey - 1986 - Dissertation, The Claremont Graduate University
    Metaphors establish connection. Root metaphors--patterns of relational imagery in the language and thought of a culture, in which a diverse group of tenors are related to a single indentifiable class of vehicles--play an important role in organizing our thought, and in bringing a coherence to our vision of the world. This is a political function; root metaphors, as philosopher Stephen Pepper discusses them, are most often found in the works of philosophers remembered as political philosophers. ;The second law of (...)--the law of entropy--holds that in any spontaneous process, usable energy becomes unusable energy. It also suggests that improbable order must succumb, through time, to more probable chaos. The law of entropy has enjoyed a popularity as metaphor unusual for such physics esoterica. In the works of Brooks Adams, Henry Adams, Nicholas Georgescu-Roegen, and Thomas Pynchon, the idea of entropy appears as the fundamental, organizing idea for an economic interpretation of history, a philosophy of history, an ecologically enlightened economic theory, and an encyclopedic novel that apotheosizes modern culture. Analysis of how the entropy metaphor is manifest in the works of these thinkers allows us to judge the strengths and weaknesses of entropy as root metaphor. Analysis of its contemporary popularity affords insight into the politics of the day. Ultimately, the entropy root metaphor serves as the foundation of a refurbished "generating substance" world hypothesis, but the root metaphor itself remains equivocal on the important issue of centralized versus decentralized political organization. (shrink)
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  40. What’s so special about initial conditions? Understanding the past hypothesis in directionless time.Matt Farr - 2022 - In Yemima Ben-Menahem (ed.), Rethinking Laws of Nature. Springer.
    It is often said that the world is explained by laws of nature together with initial conditions. But does that mean initial conditions don’t require further explanation? And does the explanatory role played by initial conditions entail or require that time has a preferred direction? This chapter looks at the use of the ‘initialness defence’ in physics, the idea that initial conditions are intrinsically special in that they don’t require further explanation, unlike the state of the world at other (...)
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  41. Principled Mechanistic Explanations in Biology: A Case Study of Alzheimer's Disease.Sepehr Ehsani - manuscript
    Following an analysis of the state of investigations and clinical outcomes in the Alzheimer's research field, I argue that the widely-accepted 'amyloid cascade' mechanistic explanation of Alzheimer's disease appears to be fundamentally incomplete. In this context, I propose that a framework termed 'principled mechanism' (PM) can help with remedying this problem. First, using a series of five 'tests', PM systematically compares different components of a given mechanistic explanation against a paradigmatic set of criteria, and hints at various ways of making (...)
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  42. (1 other version)Talking Monkeys: Philosophy, Psychology, Science, Religion and Politics on a Doomed Planet - Articles and Reviews 2006-2017.Michael Starks - 2017 - Las Vegas, NV USA: Reality Press.
    This collection of articles was written over the last 10 years and edited to bring them up to date (2017). The copyright page has the date of the edition and new editions will be noted there as I edit old articles or add new ones. All the articles are about human behavior (as are all articles by anyone about anything), and so about the limitations of having a recent monkey ancestry (8 million years or much less depending on viewpoint) and (...)
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  43. All God Has to Do.Tim Crane - 1991 - Analysis 51 (4):235-44.
    In the beginning God created the elementary particles. Bosons, electrons, protons, quarks and the rest he created them. And they were without form and void, so God created the fundamental laws of physics - the laws of mechanics, electromagnetism, thermodynamics and the rest - and assigned values to the fundamental physical constants: the gravitational constant, the speed of light, Planck's constant and the rest. God then set the Universe in motion. And God looked at what he had (...)
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  44. The logic of metabolism and its fuzzy consequences.A. Danchin - 2014 - Environmental Microbiology 16 (1):19-28.
    Intermediary metabolism molecules are orchestrated into logical pathways stemming from history (L-amino acids, D-sugars) and dynamic constraints (hydrolysis of pyrophosphate or amide groups is the driving force of anabolism). Beside essential metabolites, numerous variants derive from programmed or accidental changes. Broken down, variants enter standard pathways, producing further variants. Macromolecule modification alters enzyme reactions specificity. Metabolism conform thermodynamic laws, precluding strict accuracy. Hence, for each regular pathway, a wealth of variants inputs and produces metabolites that are similar to but (...)
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  45. Oxidative Cleavage of Alpha Amino Acids ℓ–Glycine and ℓ–Valine By1,3-Dichloro-5,5-Dimethylhydantoin in Medium of Aqueous Acetic Acid Medium.Shweta Neeraj, Arvind Prasad Dwivedi & S. S. Parihar - 2018 - International Journal of Engineering and Information Systems (IJEAIS) 2 (10):27-31.
    Abstract: 1,3-dichloro-5,5-dimethylhydantoin (DCDMH) hydrolysed of this compounds leads to the formation of active positive halogen species like HOCl and H2O+Cl. The H2O+Cl in non-polar or less polar media, extensively used as a chlorinating and oxidizing agents in organic substrate. The rate of reaction is enhanced by the increasing [H+] and percentage of acetic acid. The main product of the oxidation is corresponding aldehydes. The thermodynamic parameters for the oxidation have been computed in the show step mechanism. The observed rate law (...)
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  46. The time asymmetry of quantum mechanics and concepts of physical directionality of time Part 1.Andrew Thomas Holster - manuscript
    This is Part 1 of a four part paper, intended to redress some of the most fundamental confusions in the subject of physical time directionality, and represent the concepts accurately. There are widespread fallacies in the subject that need to be corrected in introductory courses for physics students and philosophers. We start in Part 1 by analysing the time reversal symmetry of quantum probability laws. Time reversal symmetry is defined as the property of invariance under the time reversal transformation, (...)
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  47. Philosophical issues about Black holes.Gustavo E. Romero - 2014 - In Abraham Barton (ed.), Advances in Black Holes Research. New York: Nova Science Publishers. pp. 25-58.
    Black holes are extremely relativistic objects. Physical processes around them occur in a regime where the gravitational field is extremely intense. Under such conditions, our representations of space, time, gravity, and thermodynamics are pushed to their limits. In such a situation philosophical issues naturally arise. In this chapter I review some philosophical questions related to black holes. In particular, the relevance of black holes for the metaphysical dispute between presentists and eternalists, the origin of the second law of thermadynamics (...)
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  48. The computable universe: from prespace metaphysics to discrete quantum mechanics.Martin Leckey - 1997 - Dissertation, Monash University
    The central motivating idea behind the development of this work is the concept of prespace, a hypothetical structure that is postulated by some physicists to underlie the fabric of space or space-time. I consider how such a structure could relate to space and space-time, and the rest of reality as we know it, and the implications of the existence of this structure for quantum theory. Understanding how this structure could relate to space and to the rest of reality requires, I (...)
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  49. "Mind in a Physical World: An Essay on the Mind-Body Problem and Mental Causation" by Jaegwon Kim.Tim Crane - 2000 - The Times Literary Supplement 1.
    As Jaegwon Kim points out in his excellent new book, “reductionism” has become something of a pejorative term in philosophy and related disciplines. But originally (eg, as expressed in Ernest Nagel’s 1961 The Structure of Science) reduction was supposed to be a form of explanation, and one may wonder whether it is reasonable to reject in principle the advances in knowledge which such explanations may offer. Nagel’s own view, illustrated famously by the reduction of thermodynamics to statistical mechanics, was (...)
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  50. Change in Entropy as a Function of McTaggart's A-series and B-series.Paul Merriam - manuscript
    This careful note is a very initial foray into the issue of the change in entropy with respect to both McTaggart’s A-series and his B-series. We find a possible solution to the Past Hypothesis problem.
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