Philosophy of Physical Science

Edited by Hans Halvorson (Princeton University)
Assistant editors: Thomas De De Saegher, Joshua Luczak
108 found
Order:
1 — 50 / 108
  1. added 2019-09-21
    Epistemologia teoriei corzilor în gravitația cuantică.Nicolae Sfetcu - manuscript
    În teoria câmpului cuantic, principalul obstacol este apariția infinităților netratabile în interacțiunile particulelor datorită posibilității unor distanțe arbitrare între particulele punctuale. Corzile, ca obiecte extinse, oferă un cadru mai bun, care permite calcule finite. Teoria corzilor face parte dintr-un un program de cercetare în care particulele punctuale din fizica particulelor sunt înlocuite de obiecte unidimensionale numite corzi. Ea descrie modul în care aceste corzi se propagă prin spațiu și interacționează una cu cealaltă. La scale de dimensiuni mai mari, o coardă (...)
    Remove from this list   Direct download (2 more)  
    Translate
     
     
    Export citation  
     
    Bookmark  
  2. added 2019-09-21
    Higgs Naturalness and Renormalized Parameters.Robert Harlander & Joshua Rosaler - forthcoming - Foundations of Physics:1-19.
    A recently popular formulation of the Higgs naturalness principle prohibits delicate cancellations between running renormalized Higgs mass parameters and EFT matching corrections, by contrast with the principle’s original formulation, which prohibits delicate cancellations between the bare Higgs mass parameter and its quantum corrections. While the need for this latter cancellation is sometimes viewed as unproblematic since bare parameters are thought by some to be divergent and unphysical, renormalized parameters are finite and measurable, and the need for delicate cancellations between the (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  3. added 2019-09-21
    Review of "The infamous boundary: Seven decades of Heresy in quantum physics".Jonas Rafael Becker Arenhart & Jaison Schinaider - 2013 - Dissertatio 37:199-210.
    O livro de que tratamos aqui, The Infamous Boundary: Seven Decades of Heresy in Quantum Mechanics, de autoria de David Wick, é mais uma testemunha de que a questão sobre a interpretação que pode ser considerada a mais adequada para a mecânica quântica ainda é um problema que desperta o interesse tanto de cientistas quanto de filósofos e que, com certeza, não se esgotou no tempo dos criadores desta teoria.
    Remove from this list   Direct download (2 more)  
    Translate
     
     
    Export citation  
     
    Bookmark  
  4. added 2019-09-20
    Looking at the Arrow of Time and Loschmidt’s Paradox Through the Magnifying Glass of Mathematical-Billiard.Mario Stefanon - forthcoming - Foundations of Physics:1-21.
    The contrast between the past-future symmetry of mechanical theories and the time-arrow observed in the behaviour of real complex systems doesn’t have nowadays a fully satisfactory explanation. If one confides in the Laplace-dream that everything be exactly and completely describable by the known mechanical differential equations, the whole experimental evidence of the irreversibility of real complex processes can only be interpreted as an illusion due to the limits of human brain and shortness of human history. In this work it is (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  5. added 2019-09-19
    Preface.Joshua Rosaler, Robert Harlander, Gregor Schiemann & Miguel Ángel Carretero Sahuquillo - forthcoming - Foundations of Physics:1-5.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  6. added 2019-09-19
    Einstein's Redshift Derivations: Its History From 1907 to 1921.Mário Bacelar Valente - 2018 - Circumscribere: International Journal for the History of Science 22:1-16.
    Einstein's gravitational redshift derivation in his famous 1916 paper on general relativity seems to be problematic, being mired in what looks like conceptual difficulties or at least contradictions or gaps in his exposition. Was this derivation a blunder? To answer this question, we will consider Einstein’s redshift derivations from his first one in 1907 to the 1921 derivation made in his Princeton lectures on relativity. This will enable to see the unfolding of an interdependent network of concepts and heuristic derivations (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  7. added 2019-09-17
    New Exact Quasi-Classical Asymptotic Beyond WKB Approximation and Beyond Maslov Formal Expansion.Jaykov Foukzon - 2015 - Journal of Physics: Conference Series 633 (1):`1-5.
    New exact quasi-classical asymptotic of solutions to the.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  8. added 2019-09-16
    Change and Contradiction: A Criticism of the Hegelian Account of Motion.Emiliano Boccardi - 2019 - In Rodrigo Freire Edgar Almeida & Alexandre Costa-Leite (eds.), Seminário Lógica no Avião. Brasilia: Universidade de Brasilia. pp. 135-148.
    In his In Contradiction (1987), Priest levelled three powerful arguments against the received Russellian view of change and motion. He argued that his preferred paraconsistent theory of change, the Hegelian account, is immune from these objections. Here I argue that these three arguments are sound, but that the Hegelian account falls pray to them too. I conclude, however, that the Hegelian account is in a better position to tackle these challenges.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  9. added 2019-09-13
    About Fuzzy Time-Particle Interpretation of Quantum Mechanics (It is Not an Innocent One!) Version One.Farzad Didehvar - manuscript
    The major point in [1] chapter 2 is the following claim: “Any formalized system for the Theory of Computation based on Classical Logic and Turing Model of Computation leads us to a contradiction.” So, in the case we wish to save Classical Logic we should change our Computational Model. As we see in chapter two, the mentioned contradiction is about and around the concept of time, as it is in the contradiction of modified version of paradox. It is natural to (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  10. added 2019-09-13
    New Analytical Approach for Transition to Slow 3-D Turbulence.Jaykov Foukzon - 2015 - Journal of Physics: Conference Series 633 (1):6.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  11. added 2019-09-12
    Schrodinger's Cat Meets McTaggart and the Problem of Other Minds.Paul Merriam - manuscript
    This paper proposes an interpretation of time that is an 'A-theory' in that it incorporates both McTaggart's A-series and his B-series. The A-series characteristics are supposed to be 'ontologically private' analogous to qualia in the problem of other minds and is given a definition. The main idea is that the experimenter and the cat do not share the same A-series characteristics, e.g the same 'now'. So there is no single time at which the cat gets ascribed different states. It is (...)
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  12. added 2019-09-12
    Mario Bunge and the Current Revival of Causal Realism.Rognvaldur Ingthorsson - 2019 - In Michael R. Matthews (ed.), Mario Bunge: A Centenary Festschrift. Cham: pp. 205–217.
    Mario Bunge’s Causality and Modern Science is arguably one of the best treatments of the causal realist tradition ever to have been written, one that defends the place of causality as a category in the conceptual framework of modern science. And yet in the current revival of causal realism in contemporary metaphysics, there is very little awareness of Bunge’s work. This paper seeks to remedy this, by highlighting one particular criticism Bunge levels at the Aristotelian view of causation and illustrating (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  13. added 2019-09-11
    Fuzzy Time, From Paradox to Paradox.Farzad Didehvar - manuscript
    Although Fuzzy logic and Fuzzy Mathematics is a widespread subject and there is a vast literature about it, yet the use of Fuzzy issues like Fuzzy sets and Fuzzy numbers was relatively rare in time concept. This could be seen in the Fuzzy time series. In addition, some attempts are done in fuzzing Turing Machines but seemingly there is no need to fuzzy time. Throughout this article, we try to change this picture and show why it is helpful to consider (...)
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  14. added 2019-09-10
    McTaggart Saves Schrodinger's Cat?Paul Merriam - manuscript
    This paper proposes an interpretation of time that is an 'A-theory' in that it incorporates both McTaggart's A-series and his B-series. The A-series characteristics are supposed to be 'ontologically private' analogous to qualia in the Inverted Spectrum thought experiment and is given a definition. The main idea is that the experimenter and the cat do not share the same A-series characteristics. So there is no single time at which the cat gets ascribed different states. It is proposed one may define (...)
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  15. added 2019-09-09
    McTaggart Saves Schrodinger's Cat?Paul Merriam - manuscript
    This paper proposes an interpretation of time that is an 'A-theory' in that it incorporates both McTaggart's A-series and his B-series. The A-series characteristics are supposed to be 'ontologically private' analogous to qualia in the Inverted Spectrum thought experiment and is given a definition. It is proposed one may define a 'unit of becoming' that coordinatizes the future/present/past spectrum as well as allowing one to calculate the rates of becoming. We give a picture of this interpretation and discuss how it (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  16. added 2019-09-09
    Qu'est-ce que le temps ?Baptiste Le Bihan - forthcoming - Paris: Vrin.
  17. added 2019-09-07
    Kant on Time I: The Kinematics of the Metaphysical Foundations of Natural Science.David Hyder - 2019 - Kant-Studien 110 (3):477-497.
    The theory of space-time developed in Kant’s Critique of Pure Reason and his Metaphysical Foundations of Natural Science is connected to Leonhard Euler’s proof of invariance under Galilean transformations in the “On Motion in General” of the latter’s 1736 Analytical Mechanics. It is argued that Kant, by using the Principle of Relativity that is the output of Euler’s proof as an input to his own proof of the kinematic parallelogram law, makes essential use of absolute simultaneity. This is why, in (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  18. added 2019-09-06
    Mechanisms, Then and Now: From Metaphysics to Practice.Stathis Psillos & Stavros Ioannidis - 2019 - In Brigitte Falkenburg & Gregor Schiemann (eds.), Mechanistic Explanations in Physics and Beyond. Cham: Springer Nature. pp. 11-31.
    For many old and new mechanists, Mechanism is both a metaphysical position and a thesis about scientific methodology. In this paper we discuss the relation between the metaphysics of mechanisms and the role of mechanical explanation in the practice of science, by presenting and comparing the key tenets of Old and New Mechanism. First, by focusing on the case of gravity, we show how the metaphysics of Old Mechanism constrained scientific explanation, and discuss Newton’s critique of Old Mechanism. Second, we (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  19. added 2019-09-06
    Studying Marginalised Physical Sciences.Sean F. Johnston - 2007 - ‘Writing the History’ of the Physical Sciences After 1945: State of the Art, Questions, and Perspectives, Strasbourg, 8-9 June 2007.
    The second half of the twentieth century offers distinct perspectives for the historian of science. The role of the State, the expansion of certain industries and the cultural engagement with science were all transformed. The foregrounding of certain strands of physical science in the public and administrative consciousness – nuclear physics and planetary science, for example – had a complement: the ‘backgrounding’ or institutional neglect of a number of other fields. My work in the history of the physical sciences has (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  20. added 2019-09-05
    Theodicy, Supreme Providence, and Semiclassical Theism.James Goetz - forthcoming - Theology and Science.
    Logical limits of omnipotence, the problem of evil, and a compelling cosmological argument suggest the position of supreme providence and the foremost creation out of nothing that coheres with the constraints of physics. The Supreme Being possesses everlasting love, perception, and force while governing the universe of probabilistic processes and freewill creatures. For example, the Supreme Being intervenes in the processes of creation by the means of synergism with freewill creatures and cannot meticulously control the created universe.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  21. added 2019-09-04
    Conventionality and Reality.Pieter Thyssen - forthcoming - Foundations of Physics:1-19.
    The debate on the conventionality of simultaneity and the debate on the dimensionality of the world have been central in the philosophy of special relativity. The link between both debates however has rarely been explored. The purpose of this paper is to gauge what implications the former debate has for the latter. I show the situation to be much more subtle than was previously argued, and explain how the ontic versus epistemic distinction in the former debate impacts the latter. Despite (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  22. added 2019-09-04
    Fine-Structure Constant From Sommerfeld to Feynman.Michael A. Sherbon - 2019 - Journal of Advances in Physics 16 (1):335-343.
    The fine-structure constant, which determines the strength of the electromagnetic interaction, is briefly reviewed beginning with its introduction by Arnold Sommerfeld and also includes the interest of Wolfgang Pauli, Paul Dirac, Richard Feynman and others. Sommerfeld was very much a Pythagorean and sometimes compared to Johannes Kepler. The archetypal Pythagorean triangle has long been known as a hiding place for the golden ratio. More recently, the quartic polynomial has also been found as a hiding place for the golden ratio. The (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  23. added 2019-09-04
    Locke and Leibniz on Matter and Solidity.Idan Shimony - 2019 - In Adriano Fabris & Giovanni Scarafile (eds.), Controversies in the Contemporary World. Amsterdam/ Philadelphia: pp. 49-67.
    In this paper I analyze the virtual debate between Locke and Leibniz on solidity as proposed in Leibniz’s chapter on solidity in his New Essays on Human Understanding. I first track the oddities of the dialogue presented in the New Essays’ chapter on solidity. In this virtual dialogue, Leibniz’s representative often digresses and sometimes overlooks or misrepresents some of Locke’s most important insights. I then argue that these oddities reflect Leibniz’s sentiment that a productive controversy on this issue cannot be (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  24. added 2019-09-02
    Ontology of Gravitational Singularities.Nicolae Sfetcu - manuscript
    General relativity allows singularities, and we need to understand the ontology of singularities if we want to understand the nature of space and time in the present universe. Although some physicists believe that singularities indicate a failure of general relativity, others believe that singularities open a new horizon in cosmology, with real physical phenomena that can help deepen our understanding of the world. From the definitions of singularities, most known are the possibility that some spacetimes contain incomplete paths (most accepted), (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  25. added 2019-08-29
    Generalised Manifolds as Basic Objects of General Relativity.Joanna Luc - forthcoming - Foundations of Physics:1-23.
    In this paper non-Hausdorff manifolds as potential basic objects of General Relativity are investigated. One can distinguish four stages of identifying an appropriate mathematical structure to describe physical systems: kinematic, dynamical, physical reasonability, and empirical. The thesis of this paper is that in the context of General Relativity, non-Hausdorff manifolds pass the first two stages, as they enable one to define the basic notions of differential geometry needed to pose the problem of the evolution-distribution of matter and are not in (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  26. added 2019-08-25
    A Structuralist Proposal for the Foundations of the Natural Numbers.Desmond A. Ford - manuscript
    This paper introduces a novel object that has less structure than, and is ontologically prior to the natural numbers. As such it is a candidate model of the foundation that lies beneath the natural numbers. The implications for the construction of mathematical objects built upon that foundation are discussed.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  27. added 2019-08-25
    Distributional SAdS BH Spacetime-Induced Vacuum Dominance.Jaykov Foukzon - 2016 - Journal of Advances in Mathematics and Computer Science 13 (6):1-54.
    This paper dealing with extension of the Einstein eld equations using apparatus of contemporary generalization of the classical Lorentzian geometry named in literature Colombeau distributional geometry, see for example [1], [2], [3], [4], [5], [6], [7] and [32]. The regularizations of singularities presented in some solutions of the Einstein equations is an important part of this approach. Any singularities present in some solutions of the Einstein equations recognized only in the sense of Colombeau generalized functions [1], [2] and not classically. (...)
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  28. added 2019-08-24
    The Hole Argument, Take N.John Dougherty - forthcoming - Foundations of Physics:1-18.
    I apply homotopy type theory to the hole argument as formulated by Earman and Norton. I argue that HoTT gives a precise sense in which diffeomorphism-related Lorentzian manifolds represent the same spacetime, undermining Earman and Norton’s verificationist dilemma and common formulations of the hole argument. However, adopting this account does not alleviate worries about determinism: general relativity formulated on Lorentzian manifolds is indeterministic using this standard of sameness and the natural formalization of determinism in HoTT. Fixing this indeterminism results in (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  29. added 2019-08-24
    Comment on ‘The Aestivation Hypothesis for Resolving Fermi’s Paradox’.Charles H. Bennett, Robin Hanson & C. Jess Riedel - 2019 - Foundations of Physics 49 (8):820-829.
    In their article, ‘That is not dead which can eternal lie: the aestivation hypothesis for resolving Fermi’s paradox’, Sandberg et al. try to explain the Fermi paradox by claiming that Landauer’s principle implies that a civilization can in principle perform far more times more) irreversible logical operations if it conserves its resources until the distant future when the cosmic background temperature is very low. So perhaps aliens are out there, but quietly waiting. Sandberg et al. implicitly assume, however, that computer-generated (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  30. added 2019-08-23
    On the Reconciliation Between Infinity and Zero - Another 'Theory of Everything' Based on Nothing?Louis Taylor - manuscript
    Is there room enough in all creation for an 'Empty Universe Theory'? How should we view the realm in which we exist? Are the natures of matter and energy, their compositions and relationships with each other the fundamental key to the understanding of everything or is it something else? A thought on the true nature of the realm we really inhabit with some basic mathematical description of the relationship between the finite and the absolute as we are capable of understanding (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  31. added 2019-08-23
    Calibration, Coherence, and Consilience in Radiometric Measures of Geologic Time.Alisa Bokulich - forthcoming - Philosophy of Science.
    In 2012 the Geological Time Scale, which sets the temporal framework for studying the timing and tempo of all major geological, biological, and climatic events in Earth's history, had one-quarter of all its boundaries moved in a prima facie puzzling, widespread revision of radiometric dates. In this paper I show how recent work in the philosophy of metrology can help us understand this episode, and in turn how a careful consideration of this case elucidates the distinct, but related, notions of (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  32. added 2019-08-22
    Les singularités comme limites ontologiques de la relativité générale.Nicolae Sfetcu - manuscript
    Les singularités de la relativité générale résultant de la résolution des équations d'Einstein ont été et font encore l'objet de nombreux débats scientifiques : existe-t-il des singularités dans l'espace-temps ou pas ? Big Bang a été une singularité initiale ? Si les singularités existent, quelle est leur ontologie ? La théorie générale de la relativité est-elle une théorie qui a montré ses limites dans ce cas ? Dans cet essai, je soutiens qu'il existe des singularités et que la théorie de (...)
    Remove from this list   Direct download (2 more)  
    Translate
     
     
    Export citation  
     
    Bookmark  
  33. added 2019-08-22
    The Practice of Naturalness: A Historical-Philosophical Perspective.Arianna Borrelli & Elena Castellani - forthcoming - Foundations of Physics:1-19.
    No evidence of “new physics” was found so far by LHC experiments, and this situation has led some voices in the physics community to call for the abandonment of the “naturalness” criterion, while other scientists have felt the need to break a lance in its defense by claiming that, at least in some sense, it has already led to successes and therefore should not be dismissed too quickly, but rather only reflected or reshaped to fit new needs. In our paper (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  34. added 2019-08-22
    Reply to a Comment on “Quantum Theory and the Limits of Objectivity”.Richard Healey - 2019 - Foundations of Physics 49 (8):816-819.
    In this short note I reply to criticisms of an argument in my paper that appear in comment. Baumann et al. raise one “main criticism” then go on to claim that the argument of Healey contains a series of problems. But their “main criticism” is not an objection to the argument and the problems are of their own making.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  35. added 2019-08-21
    Testing a Quantum Inequality with a Meta-Analysis of Data for Squeezed Light.G. Jordan Maclay & Eric W. Davis - 2019 - Foundations of Physics 49 (8):797-815.
    In quantum field theory, coherent states can be created that have negative energy density, meaning it is below that of empty space, the free quantum vacuum. If no restrictions existed regarding the concentration and permanence of negative energy regions, it might, for example, be possible to produce exotic phenomena such as Lorentzian traversable wormholes, warp drives, time machines, violations of the second law of thermodynamics, and naked singularities. Quantum Inequalities have been proposed that restrict the size and duration of the (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  36. added 2019-08-15
    From McTaggart to AdS^5 Signature V. 4.Paul Merriam - manuscript
    The purpose of this yet-another version of this note is to make another attempt to show how an 'AB-series' interpretation of time, given in a companion paper, leads, surprisingly, apparently, to the signature of the physicists' important AdS^5 geometry. This is not a theory of 2 time dimensions. Rather, it is a theory of 1 time dimension that has both A-series and B-series characteristics.
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  37. added 2019-08-15
    Perennial Symmetry Arguments: Aristotle’s Heavenly Cosmology and Noether’s First Theorem.Ryan Miller - forthcoming - Proceedings of the American Catholic Philosophical Association.
    Attempts to find perennial elements in Aristotle’s cosmology are doomed to failure because his distinction of sub- and supra-lunary realms no longer holds. More fruitful approaches to the contemporary importance of Aristotelian cosmology must focus on parities of reasoning rather than content. This paper highlights the striking parallels between Aristotle’s use of symmetry arguments in cosmology and instances of Noether’s First Theorem in contemporary physics. Both observe simple motion, find symmetries in that motion, argue from those symmetries to notions of (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  38. added 2019-08-14
    Climate Change and Spiritual Transformation.David John Midgley - 2007 - In Mary Midgley (ed.), Earthy Realism: The Meaning of Gaia. Exeter, UK: pp. 95-101.
    The continued failure of our civilisation to mobilise an adequate response to the crisis of climate change is traced to a pathological condition of culture analogous to addiction in the case of an individual. The exponential increase in the use of fossil fuel energy has both fuelled, and been driven by, an increasingly mechanistic and materialistic world-outlook that is inimical to acceptance of the measures needed to prevent catastrophic anthropogenic climate change. A holistic view of nature, drawn from such disciplines (...)
    No categories
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  39. added 2019-08-09
    Thinking About Spacetime.David Yates - forthcoming - In Christian Wüthrich, Baptiste Le Bihan & Nick Huggett (eds.), Philosophy Beyond Spacetime. Oxford: Oxford University Press.
    Several different quantum gravity research programmes suggest, for various reasons, that spacetime is not part of the fundamental ontology of physics. This gives rise to the problem of empirical coherence: if fundamental physical entities do not occupy spacetime or instantiate spatiotemporal properties, how can fundamental theories concerning those entities be justified by observation of spatiotemporally located things like meters, pointers and dials? I frame the problem of empirical coherence in terms of entailment: how could a non-spatiotemporal fundamental theory entail spatiotemporal (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  40. added 2019-08-08
    C. C. M. Mody, Instrumental Community: Probe Microscopy and the Path to Nanotechnology. [REVIEW]Sean F. Johnston - 2013 - Technology and Culture 54:221-223.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  41. added 2019-08-08
    Chunglin Kwa, Styles of Knowing: A New History of Science From Ancient Times to the Present. [REVIEW]Sean F. Johnston - 2012 - Ambix 59:294-295.
  42. added 2019-08-08
    Bruce J. Hunt, Pursuing Power and Light: Technology and Physics From James Watt to Albert Einstein. [REVIEW]Sean F. Johnston - 2011 - Technology and Culture 52:403-404.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  43. added 2019-08-08
    Richard Stalley, Einstein's Generation: The Origins of the Relativity Revolution. [REVIEW]Sean F. Johnston, P. Pyenson & A. A. Martinez - 2011 - Metascience 20:53-73.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  44. added 2019-08-08
    Crosbie Smith, The Science of Energy: The Cultural History of Energy Physics in Victorian Britain. [REVIEW]Sean F. Johnston - 2000 - Science and Public Policy 27:45-46.
  45. added 2019-08-08
    Jon Agar, Science and Spectacle: The Work of Jodrell Bank in Post War British Culture. [REVIEW]Sean F. Johnston - 1999 - Science and Public Policy 26:215-216.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  46. added 2019-08-08
    Peter Galison, Image and Logic: A Material Culture of Microphysics. [REVIEW]Sean F. Johnston - 1999 - Science and Public Policy 26:75-76.
  47. added 2019-08-07
    What Are Observables in Hamiltonian Einstein–Maxwell Theory?James Pitts - 2019 - Foundations of Physics 49 (8):786-796.
    Is change missing in Hamiltonian Einstein–Maxwell theory? Given the most common definition of observables, observables are constants of the motion and nonlocal. Unfortunately this definition also implies that the observables for massive electromagnetism with gauge freedom are inequivalent to those of massive electromagnetism without gauge freedom. The alternative Pons–Salisbury–Sundermeyer definition of observables, aiming for Hamiltonian–Lagrangian equivalence, uses the gauge generator G, a tuned sum of first-class constraints, rather than each first-class constraint separately, and implies equivalent observables for equivalent massive electromagnetisms. (...)
    Remove from this list   Direct download (6 more)  
     
    Export citation  
     
    Bookmark  
  48. added 2019-08-07
    Teoria specială a relativității.Nicolae Sfetcu - 2018 - Drobeta Turnu Severin: MultiMedia Publishing.
    Teoria relativității speciale a fost propusă în 1905 de Albert Einstein în articolul său "Despre electrodinamica corpurilor în mișcare". Titlul articolului se referă la faptul că relativitatea rezolvă o neconcordanță între ecuațiile lui Maxwell și mecanica clasică. Teoria se bazează pe două postulate: (1) că formele matematice ale legilor fizicii sunt invariabile în toate sistemele inerțiale; și (2) că viteza luminii în vid este constantă și independentă de sursă sau observator. Reconcilierea cele două postulate necesită o unificare a spațiului și (...)
    Remove from this list   Direct download (2 more)  
    Translate
     
     
    Export citation  
     
    Bookmark  
  49. added 2019-08-06
    Epistemologia gravitației cuantice canonice – Gravitația cuantică în bucle.Nicolae Sfetcu - manuscript
    În interpretarea gravitației cuantice canonice, gravitația apare ca o pseudoforță geometrică, este redusă la geometria spațio-temporală și devine un simplu efect al curburii spațiu-timpului. Relativitatea generală asociază gravitația cu spațiu-timpul, dar tipul de asociere nu este fixat. În locul interpretării geometrice se poate folosi interpretarea câmpului (geometria spațiu-timp este redusă la un câmp gravitațional, respectiv metrica, considerată drept "doar un alt câmp") sau interpretarea egalitară (o identificare conceptuală a gravitației și spațiu-timpului în relativitatea generală. ). Aceste interpretări alternative reduc diferențele (...)
    Remove from this list   Direct download (2 more)  
    Translate
     
     
    Export citation  
     
    Bookmark  
  50. added 2019-08-06
    From McTaggart to AdS_5 Geometry V. 3.Paul Merriam - manuscript
    The purpose of this note is to show how an 'AB-series' interpretation of time leads, surprisingly, apparently, to AdS_5 geometry. This is not a theory of 2 time dimensions. Rather, it is a theory of 1 time dimension that has both A-series and B-series characteristics. To summarize the result, a spacetime in terms of (1) the earlier-to-later aspect of time, and (2) the (related) future-present-past aspect of time, and (3) 3-d space, it would seem, gives us the AdS_5 geometry.
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
1 — 50 / 108