Results for 'fine structure constant alpha'

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  1.  19
    The Fine-Structure Constant and Some Relationships Between the Electromagnetic Wave Constants.Forrest Bishop - 2007 - Apeiron 14 (4):379-384.
  2.  11
    Fine Structure Constant| and Variable Speed of Light.Guoyou Huang - 2010 - Apeiron: Studies in Infinite Nature 17 (2):126.
  3. “Dark Matter” and the Fine Structure Constant.Cahill Rt Gravity - 2005 - Apeiron 12 (2):144-177.
  4.  9
    Magic Number: A Partial History of the Fine-Structure Constant.Helge Kragh - 2003 - Archive for History of Exact Sciences 57 (5):395-431.
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  5.  27
    The Charge–Mass–Spin Relation of Clifford Polyparticles, Kerr–Newman Black Holes and the Fine Structure Constant.Carlos Castro - 2004 - Foundations of Physics 34 (7):1091-1113.
    A Clifford-algebraic interpretation is proposed of the charge, mass, spin relationship found recently by Cooperstock and Faraoini, which was based on the Kerr–Newman metric solutions of the Einstein–Maxwell equations. The components of the polymomentum associated with a Clifford polyparticle in four dimensions provide for such a charge, mass, spin relationship without the problems encountered in Kaluza–Klein compactifications which furnish an unphysically large value for the electron charge. A physical reasoning behind such charge, mass, spin relationship is provided, followed by a (...)
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  6. Constraints on the Value of the Fine Structure Constant From Gravitational Thermodynamics.P. C. W. Davies - unknown
    The fine structure constant α ≡ e2/ c ≈ 1/137 is one of the fundamental parameters of the standard model of particle physics. There is a long history of attempts to derive the measured value of α from an underlying theory, or exhibit it in the form of a compact mathematical expression [2–4, 6, 8, 14–16]. The most significant advance in this endeavour was made by Dirac, who showed that if magnetic monopoles exist, with magnetic charge μ, (...)
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  7.  25
    Mach's Principle, Mass, and the Fine Structure Constant.Yukio Tomozawa - 1972 - Foundations of Physics 2 (1):27-34.
    A modified form of Mach's principle is proposed, and its consequences are discussed.
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  8.  11
    Structural Properties of Irreducible Two-Particle Representations of the Poincaré Group.Walter Smilga - 2019 - Foundations of Physics 49 (7):728-740.
    Two particles, described by an irreducible two-particle representation of the Poincaré group, are correlated by the constraints that the constancy of the Casimir operators imposes on the state space. This correlation can be understood as a geometrically caused interaction between the particles, the strength of which is related to the normalisation constant \ of the two-particle states by \. The numerical value of \ is found to match the experimental value of the electromagnetic fine structure constant (...)
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  9. Time Variation of the Coupling Constants.P. C. W. Davies - unknown
    of a logarithmic time dependence of the fine structure constant is apparently within the limits discussed if there is a corresponding logarithmic time dependence of the strong coupling constant also. Moreover the recent discover> of naturally occurring ' Pu places the Gamow hypothesis of e' r much nearer the allov'able limits than had previously been supposed.
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  10.  30
    The Fine Structure of ‘Homology’.Aaron Novick - 2018 - Biology and Philosophy 33 (1-2):6.
    There is long-standing conflict between genealogical and developmental accounts of homology. This paper provides a general framework that shows that these accounts are compatible and clarifies precisely how they are related. According to this framework, understanding homology requires both an abstract genealogical account that unifies the application of the term to all types of characters used in phylogenetic systematics and locally enriched accounts that apply only to specific types of characters. The genealogical account serves this unifying role by relying on (...)
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  11.  86
    The Fine Structure of Inference to the Best Explanation. [REVIEW]Stathis Psillos - 2007 - Philosophy and Phenomenological Research 74 (2):441–448.
    Traditionally, philosophers have focused mostly on the logical template of inference. The paradigm-case has been deductive inference, which is topic-neutral and context-insensitive. The study of deductive rules has engendered the search for the Holy Grail: syntactic and topic-neutral accounts of all prima facie reasonable inferential rules. The search has hoped to find rules that are transparent and algorithmic, and whose following will just be a matter of grasping their logical form. Part of the search for the Holy Grail has been (...)
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  12.  31
    More Fine Structural Global Square Sequences.Martin Zeman - 2009 - Archive for Mathematical Logic 48 (8):825-835.
    We extend the construction of a global square sequence in extender models from Zeman [8] to a construction of coherent non-threadable sequences and give a characterization of stationary reflection at inaccessibles similar to Jensen’s characterization in L.
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  13.  11
    The Fine Structure of Inference to the Best Explanation.Stathis Psillos - 2007 - Philosophy and Phenomenological Research 74 (2):441-448.
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  14.  45
    The Fine Structure of Psychological Time.J. M. Stroud - 1967 - Annals of the New York Academy of Sciences 138:623-631.
  15.  43
    The Fine Structure of Psychological Time.J. M. Stroud - 1957 - In H. Quastler (ed.), Information Theory in Psychology: Problems and Methods. Free Press.
  16.  19
    The Fine Structure of Peircean Ligatures and Lines of Identity.Robert W. Burch - 2011 - Semiotica 2011 (186):21-68.
    Lines of identity in Peirce's existential graphs are logically complex structures that comprise both identity and existential quantification. Yet geometrically they are simple: linear continua that cannot have “furcations” or cross “cuts.” By contrast Peirce's “ligatures” are geometrically complex: they can both have furcations and cross cuts. Logically they involve not only identity and existential quantification but also negation. Moreover, Peirce makes clear that ligatures are composed of lines of identity by virtue of the fact that such lines can be (...)
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  17.  10
    The Fine Structure of Real Mice.Daniel W. Cunningham - 1998 - Journal of Symbolic Logic 63 (3):937-994.
    Before one can construct scales of minimal complexity in the Real Core Model, K(R), one needs to develop the fine-structure theory of K(R). In this paper, the fine structure theory of mice, first introduced by Dodd and Jensen, is generalized to that of real mice. A relative criterion for mouse iterability is presented together with two theorems concerning the definability of this criterion. The proof of the first theorem requires only fine structure; whereas, the (...)
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  18.  11
    Fine Structure for Tame Inner Models.E. Schimmerling & J. R. Steel - 1996 - Journal of Symbolic Logic 61 (2):621-639.
  19.  4
    The Fine Structure of Scientific Creativity.F. L. Holmes - 1981 - History of Science 19 (1):60-70.
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  20.  56
    The Fine Structure of the Intuitionistic Borel Hierarchy.Wim Veldman - 2009 - Review of Symbolic Logic 2 (1):30-101.
    In intuitionistic analysis, a subset of a Polish space like or is called positively Borel if and only if it is an open subset of the space or a closed subset of the space or the result of forming either the countable union or the countable intersection of an infinite sequence of (earlier constructed) positively Borel subsets of the space. The operation of taking the complement is absent from this inductive definition, and, in fact, the complement of a positively Borel (...)
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  21.  31
    Fine Structure and Class Forcing.M. C. Stanley - 2001 - Bulletin of Symbolic Logic 7 (4):522-525.
  22.  48
    Q.E.D., Qed.Adam Koberinski & Chris Smeenk - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 71:1-13.
    Precision testing of the quantum electrodynamics (QED) and the standard model provides some of the most secure knowledge in the history of physics. These tests can also be used to constrain and search for new physics going beyond the standard model. We examine the evidential structure of relationships between theoretical predictions from QED, precision measurements of these phenomena, and the indirect determination of the fine structure constant. We argue that "pure QED" is no longer sufficient to (...)
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  23. Fine-Structure and Dynamics of Behavior.Wl Palya - 1990 - Bulletin of the Psychonomic Society 28 (6):490-490.
  24. The fine structure of the chemical revolution of the eighteenth century.Anna Estany - 1996 - Endoxa 7:21-42.
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  25.  21
    Generic Relativizations of Fine Structure.Kai Hauser - 2000 - Archive for Mathematical Logic 39 (4):227-251.
    It is shown how certain generic extensions of a fine structural model in the sense of Mitchell and Steel [MiSt] can be reorganized as relativizations of the model to the generic object. This is then applied to the construction of Steel's core model for one Woodin cardinal [St] and its generalizations.
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  26.  8
    The Fine Structure of Films of Rubber and Other Polymers.M. Seal - 1960 - Philosophical Magazine 5 (49):78-83.
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  27.  5
    Crystal Fine Structure, Conductivity and Cation Self-Diffusion in Sodium Chloride.I. M. Hoodless & S. J. Thomson - 1959 - Philosophical Magazine 4 (46):1131-1141.
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  28.  14
    A Fine Structure in the Theory of Isols.Joseph Barback - 1998 - Mathematical Logic Quarterly 44 (2):229-264.
    In this paper we introduce a collection of isols having some interesting properties. Imagine a collection W of regressive isols with the following features: u, v ϵ W implies that u ⩽ v or v ⩽ u, u ⩽ v and v ϵ W imply u ϵ W, W contains ℕ = {0,1,2,…} and some infinite isols, and u eϵ W, u infinite, and u + v regressive imply u + v ϵ W. That such a collection W exists is (...)
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  29.  4
    The Fine Structure Levels and Spin-Singlet Contributions to Zero-Field-Splitting Parameters of Cr2+Ion in CdGa2S4.Tan Xiao-Ming, Kuang Xiao-Yu, Zhou Kang-Wei, Liu Zi-Jiang & Qu Yu-Qiang - 2010 - Philosophical Magazine 90 (10):1289-1295.
  30.  34
    On the Fine Structure of the Polygroup Blow-Up.Itay Ben-Yaacov - 2003 - Archive for Mathematical Logic 42 (7):649-663.
    We study in detail the blow-up procedure described in [BTW01]. We obtain a structure theorem for coreless polygroups as a double quotient space G//H, and a polygroup chunk theorem. Seeking to remove the arbitrary parameter needed for the blow-up, we find canonical Ø-invariant groupoids.
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  31.  9
    Comparison of Fine Structural Mice Via Coarse Iteration.F. Schlutzenberg & J. R. Steel - 2014 - Archive for Mathematical Logic 53 (5-6):539-559.
    Let M\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{M}}$$\end{document} be a fine structural mouse. Let D\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{D}}$$\end{document} be a fully backgrounded L[E]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${L[\mathbb{E}]}$$\end{document}-construction computed inside an iterable coarse premouse S. We describe a process comparing M\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{M}}$$\end{document} with D\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathbb{D}}$$\end{document}, through forming iteration trees on M\documentclass[12pt]{minimal} (...)
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  32.  60
    On the Fine Structure of the Exponential Rule.Simone Martini Andrea Masini - 1995 - In Jean-Yves Girard, Yves Lafont & Laurent Regnier (eds.), Advances in Linear Logic. Cambridge University Press. pp. 197.
  33.  66
    Accounting for the Fine Structure of Syntactic Working Memory: Similarity-Based Interference as a Unifying Principle.Richard L. Lewis - 1999 - Behavioral and Brain Sciences 22 (1):105-106.
    A promising approach to more refined models consistent with the Caplan & Waters hypothesis is based on similarity-based interference, a general principle that applies across working memory domains. This may explain both the fine details of syntactic working memory phenomena and the gross fractionation for which Caplan & Waters have found evidence. Detailed models of syntactic processing that embody similarity-based interference fare well cross-linguistically.
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  34.  17
    R. Björn Jensen. The Fine Structure of the Constructible Hierarchy. Annals of Mathematical Logic, Vol. 4 No. 3 , Pp. 229–308. [REVIEW]Richard Laver - 1975 - Journal of Symbolic Logic 40 (4):632-633.
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  35.  33
    Bootstrapping the Photon.Geoffrey F. Chew - 1983 - Foundations of Physics 13 (2):217-246.
    A nontechnical review is given of a topological bootstrap theory, with emphasis on theraison d'être for an electromagnetism whose fine-structure constant is of order10 −2.
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  36.  9
    Sy D. Friedman. Fine Structure and Class Forcing. De Gruyter Series in Logic and its Applications, No. 3. Walter de Gruyter, Berlin and New York 2000, X + 221 Pp. [REVIEW]M. C. Stanley - 2001 - Bulletin of Symbolic Logic 7 (4):522-525.
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  37.  14
    X-Ray Absorption Fine-Structure Study on the Fine Structure of Lutetium Segregated at Grain Boundaries in Fine-Grained Polycrystalline Alumina.Hidehiro Yoshida, Yuichi Ikuhara, Taketo Sakuma, Masaki Sakurai & Eiichiro Matsubara - 2004 - Philosophical Magazine 84 (9):865-876.
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  38.  10
    Observations of the Fine Structure of Superdislocations in Ni3Al by Field-Ion Microscopy.R. J. Taunt & B. Ralph - 1974 - Philosophical Magazine 30 (6):1379-1394.
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  39.  7
    Friedberg R. M.. The Fine Structure of Degrees of Unsolvability of Recursively Enumerable Sets. Summaries of Talks Presented at the Summer Institute for Symbolic Logic, Cornell University, 1957, 2nd Edn., Communications Research Division, Institute for Defense Analyses, Princeton, N.J., 1960, Pp. 404–406. [REVIEW]Gerald E. Sacks - 1963 - Journal of Symbolic Logic 28 (2):166-166.
  40.  8
    The Extended Classical Charged Particle. II.R. G. Beil - 1993 - Foundations of Physics 23 (12):1587-1600.
    A model of the extended classical charged particle is developed further to prove that the electron potential can be expressed as a superposition of null waves. The null waves are solutions of the homogeneous wave equation and are related to some recently discovered types of solutions which are localized and propagate without dispersion. Connections with quantum electrodynamics and the fine structure constant are indicated.
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  41.  14
    Quantum Mechanics of the Supplementary Series.Andrzej Staruszkiewicz - 2002 - Foundations of Physics 32 (12):1863-1876.
    Unitary, irreducible representations of the proper, orthochronous Lorentz group comprise the main series and the supplementary series. The main series is spanned by the complete set of eigenstates of the self-adjoint Casimir operator C 1=−(1/2)M μν M μν , where M μν are generators of Lorentz transformations. The supplementary series has no such interpretation; moreover it is spurious from the point of view of functional analysis as it does not enter into the integral representation of an arbitrary test function. The (...)
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  42.  20
    Some Preliminary Formulations Toward a New Theory of Matter.V. Shekhawat - 1976 - Foundations of Physics 6 (2):221-235.
    Matter is pictured as a primitive fluid substratum having the fundamental property of fluctuating at a constant frequency. From this are derived the discrete properties of space and time, and it follows that, at the microlevel, talk of pure space and pure time involves us in ambiguities. A new interpretation of Planck's constant emerges according to which it is a quantum of matter-time combination. Thus, a quantum of matter-space combination should exist. On pursuing further the hydrodynamic model, such (...)
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  43. The Grammar of Quantification and the Fine Structure of Interpretation Contexts.Adrian Brasoveanu - 2013 - Synthese 190 (15):3001-3051.
    Providing a compositional interpretation procedure for discourses in which descriptions of complex dependencies between interrelated objects are incrementally built is a key challenge for formal theories of natural language interpretation. This paper examines several quantificational phenomena and argues that to account for these phenomena, we need richly structured contexts of interpretation that are passed on between different parts of the same sentence and also across sentential boundaries. The main contribution of the paper is showing how we can add structure (...)
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  44.  1
    Electromagnetic Angular Momentum of an Orbiting Charge.W. J. Trompetter - 2021 - Foundations of Physics 51 (5):1-22.
    The electric field of an orbiting charge or electron observed in the rotating frame takes on a circular trajectory with a maximum radius of \. The resultant extended electromagnetic structure is used to derive the spin–orbit energy of the orbiting electron. A surprising result of the derived expression is that the orbital velocity has a specific value ) in close agreement ) with the experimentally determined value for the fine structure constant ). Furthermore, the derived spin–orbit (...)
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  45.  43
    Coding Without Fine Structure.Sy D. Friedman - 1997 - Journal of Symbolic Logic 62 (3):808-815.
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  46. Structures and Circumstances: Two Ways to Fine-Grain Propositions.David Ripley - 2012 - Synthese 189 (1):97 - 118.
    This paper discusses two distinct strategies that have been adopted to provide fine-grained propositions; that is, propositions individuated more finely than sets of possible worlds. One strategy takes propositions to have internal structure, while the other looks beyond possible worlds, and takes propositions to be sets of circumstances, where possible worlds do not exhaust the circumstances. The usual arguments for these positions turn on fineness-of-grain issues: just how finely should propositions be individuated? Here, I compare the two strategies (...)
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  47. Platforms, Patchworks, and Parking Garages: Wilson’s Account of Conceptual FineStructure in Wandering Significance.Robert Brandom - 2011 - Philosophy and Phenomenological Research 82 (1):183-201.
  48.  11
    Icosahedral Order in Cu-Zr Amorphous Alloys Studied by Means of X-Ray Absorption Fine Structure and Molecular Dynamics Simulations.J. Antonowicz, A. Pietnoczka, T. Drobiazg, G. A. Almyras, D. G. Papageorgiou & G. A. Evangelakis - 2012 - Philosophical Magazine 92 (15):1865-1875.
  49. Talis Bachmann, Psychophysiology of Visual Masking The Fine Structure of Conscious Experience. [REVIEW]V. Hardcastle - 1997 - Journal of Consciousness Studies 4 (2):190-192.
  50.  21
    An Elementary Approach to the Fine Structure of L.Sy D. Friedman & Peter Koepke - 1997 - Bulletin of Symbolic Logic 3 (4):453-468.
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