This category needs an editor. We encourage you to help if you are qualified.
Volunteer, or read more about what this involves.
Related categories

1643 found
Order:
1 — 50 / 1643
  1. On Magnetic Forces and Work.Jacob Barandes - manuscript
    We address a long-standing debate over whether classical magnetic forces can do work, ultimately answering the question in the affirmative. In detail, we couple a classical particle with intrinsic spin and elementary dipole moments to the electromagnetic field, derive the appropriate generalization of the Lorentz force law, show that the particle's dipole moments must be collinear with its spin axis, and argue that the magnetic field does mechanical work on the particle's elementary magnetic dipole moment. As consistency checks, we calculate (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  2. Can Magnetic Forces Do Work?Jacob Barandes - manuscript
    Standard lore holds that magnetic forces are incapable of doing mechanical work. More precisely, the claim is that whenever it appears that a magnetic force is doing work, the work is actually being done by another force, with the magnetic force serving only as an indirect mediator. On the other hand, the most familiar instances of magnetic forces acting in everyday life—bar magnets lifting other bar magnets—appear to present manifest evidence of magnetic forces doing work. These sorts of counterexamples are (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  3. The Construction of Electromagnetism.Mario Natiello & H. G. Solari - manuscript
    Abstract We examine the construction of electromagnetism in its current form, and in an alternative form, from a point of view that combines a minimal realism with strict rational demands. We begin by discussing the requests of reason when constructing a theory and next, we follow the historical development as presented in the record of original publications, the underlying epistemology (often explained by the authors) and the mathematical constructions. The historical construction develops along socio-political disputes (mainly, the reunification of Germany (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  4. Classical Electrodynamics in Agreement with Newton’s Third Law of Motion.Koenraad Johan van Vlaenderen - manuscript
    The force law of Maxwell’s classical electrodynamics does not agree with Newton’s third law of motion (N3LM), in case of open circuit magnetostatics. Initially, a generalized magnetostatics theory is presented that includes two additional physical fields B_Φ and B_l, defined by scalar functions. The scalar magnetic field B_l mediates a longitudinal Ampère force that balances the transverse Ampère force (aka the magnetic field force), such that the sum of the two forces agrees with N3LM for all stationary current distributions. Secondary (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  5. Is the World Made of Loops?Alexander Afriat - 2013
    In discussions of the Aharonov-Bohm effect, Healey and Lyre have attributed reality to loops $\sigma_0$ (or hoops $[\sigma_0]$), since the electromagnetic potential $A$ is currently unmeasurable and can therefore be transformed. I argue that $[A]=[A+d\lambda]_{\lambda}$ and the hoop $[\sigma_0]$ are related by a meaningful duality, so that however one feels about $[A]$ (or any potential $A\in[A]$), it is no worse than $[\sigma_0]$ (or any loop $\sigma_0\in[\sigma_0]$): no ontological firmness is gained by retreating to the loops, which are just as flimsy (...)
    Remove from this list   Direct download (6 more)  
     
    Export citation  
     
    Bookmark  
  6. Generalizing "Charge Without Charge" to Obtain Classical Analogs of Short-Range Interactions.Mark Sharlow - 2007
    Several decades ago, Wheeler and Misner presented a model of electric charge based on the topological trapping of electric field lines in wormholes. In this paper, which does not argue for or against the "charge without charge" concept, I describe some generalizations of this model which might serve as topological analogs of color charges and electroweak charges.
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  7. A Decision Procedure for Linear “Big o” Equations.Jeremy Avigad - manuscript
    Let F be the set of functions from an infinite set, S, to an ordered ring, R.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  8. Cosmic Mass and the Electromagnetic & Strong Interactions.S. Lakshminarayana - unknown - Ratio 2 (1039).
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  9. The Spin Structure of the Nucleon: Status and Plans for JLab at 11 GeV.Oscar A. Rondon - unknown - Hermes 16 (7):9-7.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  10. Modeling the Real Structure of an Electron.David L. Bergman - forthcoming - Foundations of Science.
  11. Electron in the Ground Energy State—Part.David L. Bergman & Dennis P. Allen Jr - forthcoming - Foundations of Science.
  12. The Case Against Accelerated Depreciation.Harold M. Edelstein & Peter L. Bernstein - forthcoming - Social Research.
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  13. Complexity of Local Solution of Multivariate Integral Equations. To Appear in J.K. Frank - forthcoming - Complexity.
  14. Unruh Effect in a Uniformly Accelerated Charge: From Quantum Fluctuations to Classical Radiation.Philip R. Johnson & B. L. Hu - forthcoming - Foundations of Physics.
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  15. The Endogenous Electromagnetic Oscillations in the Consciousness Field Pattern Formation.G. Lednyiczky & O. Zhalko-Tytarenko - forthcoming - World Futures.
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  16. Progress in Estimation of Solar Radiation: Correlation Between Solar Radiation and Temperature.Kenichi Matsui - forthcoming - Critical Review: A Journal of Politics and Society.
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  17. Abandoning Galileo's Ship: The Quest for Non-Relational Empirical Significance.Sebastián Murgueitio Ramírez & Nicholas Teh - forthcoming - British Journal for the Philosophy of Science.
    The recent debate about whether gauge symmetries can be empirically significant has focused on the possibility of 'Galileo's ship' types of scenarios, where the symmetries effect relational differences between a subsystem and the environment. However, it has gone largely unremarked that apart from such Galileo's ship scenarios, Greaves and Wallace (2014) proposed that gauge transformations can also be empirically significant in a 'non-relational' manner that is analogous to a Faraday-cage scenario, where the subsystem symmetry is related to a change in (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  18. Orientation of the Electric Field Gradient and Ellipticity of the Magnetic Cycloid in Multiferroic BiFeO3.A. Pierzga, A. Błachowski, K. Komędera, K. Ruebenbauer, A. Kalvane & R. Bujakiewicz-Korońska - forthcoming - Philosophical Magazine:1-7.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  19. On the Existance of Undistorted Progressive Waves of Arbitrary Speeds 0≤ V<∞ in Nature, RP 12/96 (March), IME-UNICAMP (Campinas, Brazil). [REVIEW]W. Rodrigues & Y. Lu - forthcoming - Foundations of Physics.
  20. Infrared Systems of" Looking.V. V. Tarasov & J. G. Jakvshenko - forthcoming - Logos. Anales Del Seminario de Metafísica [Universidad Complutense de Madrid, España].
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  21. Sur la Resolution Algébrique Des Équations.H. Tome - forthcoming - Eleutheria.
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  22. The Magnetic and Velocity Fields of Solar Active Regions Eds.S. Tsuneta - forthcoming - Zirin, H., Ai, G., and Wang H., Astronomical Society of the Pacific, San Francisco, P239.
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  23. Electron–Phonon Interaction and Superconductivity in The.H. M. Tütüncü, Karaca Ertuǧrul & G. P. Srivastava - forthcoming - Philosophical Magazine:1-16.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  24. Magnetic Fields.Meredith Wadman - forthcoming - Mind.
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  25. When Fields Are Not Degrees of Freedom.Vera Hartenstein & Mario Hubert - 2021 - British Journal for the Philosophy of Science 72 (1):245-275.
    We show that in the Maxwell–Lorentz theory of classical electrodynamics most initial values for fields and particles lead to an ill-defined dynamics, as they exhibit singularities or discontinuities along light-cones. This phenomenon suggests that the Maxwell equations and the Lorentz force law ought rather to be read as a system of delay differential equations, that is, differential equations that relate a function and its derivatives at different times. This mathematical reformulation, however, leads to physical and philosophical consequences for the ontological (...)
    Remove from this list   Direct download (6 more)  
     
    Export citation  
     
    Bookmark  
  26. How to Make Reflectance a Surface Property.Nicholas Danne - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 70:19-27.
    Reflectance physicalists define reflectance as the intrinsic disposition of a surface to reflect finite-duration light pulses at a given efficiency per wavelength. I criticize the received view of dispositional reflectance (David R. Hilbert’s) for failing to account for what I call “harmonic dispersion,” the inverse relationship of a light pulse's duration to its bandwidth. I argue that harmonic dispersion renders reflectance defined in terms of light pulses an extrinsic disposition. Reflectance defined as the per-wavelength efficiency to reflect the superimposed, infinite-duration, (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  27. The Non-Ideal Theory of the Aharonov–Bohm Effect.John Dougherty - 2020 - Synthese.
    Elay Shech and John Earman have recently argued that the common topological interpretation of the Aharonov–Bohm (AB) effect is unsatisfactory because it fails to justify idealizations that it presupposes. In particular, they argue that an adequate account of the AB effect must address the role of boundary conditions in certain ideal cases of the effect. In this paper I defend the topological interpretation against their criticisms. I consider three types of idealization that might arise in treatments of the effect. First, (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  28. On the Persistence of the Electromagnetic Field.Márton Gömöri & László E. Szabó - 2019 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 50 (1):43-61.
    According to the standard realistic interpretation of classical electrodynamics, the electromagnetic field is conceived as a real physical entity existing in space and time. The problem we address in this paper is how to understand this spatiotemporal existence, that is, how to describe the persistence of a field-like physical entity like electromagnetic field. First, we provide a formal description of the notion of persistence: we derive an “equation of persistence” constituting a necessary condition that the spatiotemporal distributions of the fundamental (...)
    Remove from this list   Direct download (7 more)  
     
    Export citation  
     
    Bookmark  
  29. Growing Evidence That Perceptual Qualia Are Neuroelectrical Not Computational.Mostyn W. Jones - 2019 - Journal of Consciousness Studies 26 (5-6):89-116.
    Computational neuroscience attributes coloured areas and other perceptual qualia to calculations that are realizable in multiple cellular forms. This faces serious issues in explaining how the various qualia arise and how they bind to form overall perceptions. Qualia may instead be neuroelectrical. Growing evidence indicates that perceptions correlate with neuroelectrical activity spotted by locally activated EEGs, the different qualia correlate with the different electrochemistries of unique detector cells, a unified neural-electromagnetic field binds this activity to form overall perceptions, and this (...)
    Remove from this list   Direct download (3 more)  
    Translate
     
     
    Export citation  
     
    Bookmark  
  30. Is an Electron a Charge Cloud? A Reexamination of Schrödinger’s Charge Density Hypothesis.Shan Gao - 2018 - Foundations of Science 23 (1):145-157.
    This article re-examines Schrödinger’s charge density hypothesis, according to which the charge of an electron is distributed in the whole space, and the charge density in each position is proportional to the modulus squared of the wave function of the electron there. It is shown that the charge distribution of a quantum system can be measured by protective measurements as expectation values of certain observables, and the results as predicted by quantum mechanics confirm Schrödinger’s original hypothesis. Moreover, the physical origin (...)
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    Bookmark  
  31. Lumina - Optica fenomenologică.Nicolae Sfetcu - 2018 - Drobeta Turnu Severin, Romania: MultiMedia Publishing.
    Previzualizare carte -/- O introducere în fenomenologia opticii geometrice (reflexia, refracția, principiul lui Fermat, oglinzi, miraje, dispersia, lentile), opticii fizice (undele luminoase, principiul Huygens–Fresnel, difracția, interferența, polarizarea, vederea tridimensională, holografia), opticii cuantice (fotoni, efectul fotoelectric, dualitatea undă-particulă, principiul incertitudinii, complementaritatea) și culorilor (transparența, translucența, amestecul culorilor, culori complementare, pigmenți), în conexiune cu teoriile fundamentale ale luminii. Despre proprietățile luminii (unde electromagnetice, spectrul electromagnetic, materiale transparente și opace, umbra, sistemul vizual uman, lumina Soarelui) și emisia luminii (stări excitate, spectrele de emisie (...)
    Remove from this list  
    Translate
     
     
    Export citation  
     
    Bookmark  
  32. Electrodynamics and Spacetime Geometry: Foundations.Francisco Cabral & Francisco S. N. Lobo - 2017 - Foundations of Physics 47 (2):208-228.
    We explore the intimate connection between spacetime geometry and electrodynamics. This link is already implicit in the constitutive relations between the field strengths and excitations, which are an essential part of the axiomatic structure of electromagnetism, clearly formulated via integration theory and differential forms. We review the foundations of classical electromagnetism based on charge and magnetic flux conservation, the Lorentz force and the constitutive relations. These relations introduce the conformal part of the metric and allow the study of electrodynamics for (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  33. Mechanism of High Velocity Electromagnetic Deformation of Al–Mg Alloy.Q. Chen, X. T. Han, J. W. Wu, Q. L. Cao, L. T. Huang, L. Liu & L. Li - 2017 - Philosophical Magazine 97 (1):69-83.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  34. Classification of Materials with Divergent Magnetic Grüneisen Parameter.P. Gegenwart - 2017 - Philosophical Magazine 97 (36):3415-3427.
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  35. Plasma Brain Dynamics (PBD): A Mechanism for EEG Waves Under Human Consciousness.Z. G. ma - 2017 - Cosmos and History 13 (2):185-203.
    EEG signals are records of nonlinear solitary waves in human brains. The waves have several types (e.g., α, β, γ, θ, δ) in response to different levels of consciousness. They are classified into two groups: Group-1 consists of complex storm-like waves (α, β, and γ); Group-2 is composed of simple quasilinear waves (θ and δ). In order to elucidate the mechanism of EEG wave formation and propagation, this paper extends the Vlasov-Maxwell equations of Plasma Brain Dynamics (PBD) to a set (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  36. Pluralizing Field Analysis: Toward a Relational Understanding of the Field of Power.Andreas Schmitz, Daniel Witte & Vincent Gengnagel - 2017 - Social Science Information 56 (1):49-73.
    A crucial yet often-overlooked starting point for any Bourdieusian field analysis is to relate the field under consideration to the ‘field of power’, so as to enable an examination of its relative autonomy or heteronomy, i.e. its relation to other fields of society and to society as a whole. However, Bourdieu and his successors did not implement this key conceptual consideration systematically, or did so peripherally at best. For this reason both the theoretical and the empirical status of the field (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  37. Fundamental Physics and the Fine-Structure Constant.Michael A. Sherbon - 2017 - International Journal of Physical Research 5 (2):46-48.
    From the exponential function of Euler’s equation to the geometry of a fundamental form, a calculation of the fine-structure constant and its relationship to the proton-electron mass ratio is given. Equations are found for the fundamental constants of the four forces of nature: electromagnetism, the weak force, the strong force and the force of gravitation. Symmetry principles are then associated with traditional physical measures.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  38. On the Logical Origin of the Laws Governing the Fundamental Forces of Nature: A New Algebraic-Axiomatic (Matrix) Approach.R. Zahedi - 2017 - In National Institute for Mathematical Sciences (INSMI - CNRS) Publcs., Paris, FRANCE. pp. 1-89.
    In this article, as a new mathematical approach to origin of the laws of nature, using a new basic algebraic axiomatic (matrix) formalism based on the ring theory and Clifford algebras (presented in Sec.2), “it is shown that certain mathematical forms of fundamental laws of nature, including laws governing the fundamental forces of nature (represented by a set of two definite classes of general covariant massive field equations, with new matrix formalisms), are derived uniquely from only a very few axioms”; (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  39. Radial-Basis-Function-Based Nuclear Magnetic Resonance Heavy Oil Viscosity Prediction Model for a Kuwait Viscous Oil Field.Khalid Ahmad, Faisal Hassan, Prasanta Kumar Mishra, Waleed Al-Khamees, Wei Shao, Songhua Chen, Magdalena Sandor & Yuesheng Cheng - 2016 - Interpretation: SEG 4 (2):SF81-SF92.
    Characterizing heavy oil viscosity by nuclear magnetic resonance relaxation time measurements is much more challenging than characterizing light oil viscosities. Crude oils contain a wide range of hydrocarbons, resulting in broad [Formula: see text] and [Formula: see text] distributions that vary with the oil composition. Most often, a single geometric mean value [Formula: see text] or [Formula: see text] is correlated with the crude oil viscosity, which cannot accurately account for the inherent complexity of the oil constituent information. Furthermore, as (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  40. Microstructural and Magnetic Properties of Ax:Zn1-xO Nanocrystals.Mustafa Akyol, Selda Kılıç Çetin & Ahmet Ekicibil - 2016 - Philosophical Magazine 96 (1):31-44.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  41. Phase Change of CoTi and Co3Ti Induced by MeV-Scale Electron Irradiation.Satoshi Anada, Akihiro Zensho, Hidehiro Yasuda & Hirotaro Mori - 2016 - Philosophical Magazine 96 (19):2027-2039.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  42. Structural and Magnetic Properties with Large Reversible Magnetocaloric Effect in 0.85Ag0.15MnO3 Compounds.Ali Osman Ayaş, Mustafa Akyol & Ahmet Ekicibil - 2016 - Philosophical Magazine 96 (10):922-937.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  43. Classical Zero-Point Radiation and Relativity: The Problem of Atomic Collapse Revisited.Timothy H. Boyer - 2016 - Foundations of Physics 46 (7):880-890.
    The physicists of the early twentieth century were unaware of two aspects which are vital to understanding some aspects of modern physics within classical theory. The two aspects are: the presence of classical electromagnetic zero-point radiation, and the importance of special relativity. In classes in modern physics today, the problem of atomic collapse is still mentioned in the historical context of the early twentieth century. However, the classical problem of atomic collapse is currently being treated in the presence of classical (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark  
  44. Graphical Representations for the Successive Lorentz Transformations. Application: Lorentz Contraction and Its Dependence on Thomas Rotation.Riad Chamseddine - 2016 - Foundations of Physics 46 (4):428-457.
    A new vectorial representation for the successive Lorentz transformations has recently been proved very convenient to achieve a straightforward treatment of the Thomas rotation effect. Such a representation rests on equivalent forms for the pure Lorentz transformation and SLT whose physical meaning escaped us. The present paper fills this gap in by showing that those equivalent forms could represent appropriate world lines, lines and planes of simultaneity. Those geometric elements are particularly convenient to build up two new graphical representations for (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  45. Charge Order Driven by Fermi-Arc Instability and its Connection with Pseudogap in Cuprate Superconductors.Shiping Feng, Deheng Gao & Huaisong Zhao - 2016 - Philosophical Magazine 96 (12):1245-1262.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  46. A Transverse Electric Current in Triglycine Sulphate Ferroelectric Crystal.Bogusław Fugiel & Toshio Kikuta - 2016 - Philosophical Magazine 96 (13):1332-1343.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  47. Realistic Tunnelling States for the Magnetic Effects in Non-Metallic Real Glasses.Giancarlo Jug, Silvia Bonfanti & Walter Kob - 2016 - Philosophical Magazine 96 (7-9):648-703.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  48. Exact Solutions to the Einstein–Maxwell Equations Describing Wormholes and Handles.Yu A. Khlestkov & L. A. Sukhanova - 2016 - Foundations of Physics 46 (6):668-688.
    On the basis of the exact solutions to the non-stationary spherically symmetric Einstein and Maxwell equations for dust matter and radial electromagnetic field, a model of a wormhole with the pulsating in time inner world and two static throats has been developed. It has been shown that such a wormhole with an arbitrary radius of the Gaussian curvature can connect both two different asymptotically flat space-times and two regions of the selfsame space-time. The problem of the fulfilment of the energy (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  49. Poynting Theorem, Relativistic Transformation of Total Energy–Momentum and Electromagnetic Energy–Momentum Tensor.Alexander Kholmetskii, Oleg Missevitch & Tolga Yarman - 2016 - Foundations of Physics 46 (2):236-261.
    We address to the Poynting theorem for the bound electromagnetic field, and demonstrate that the standard expressions for the electromagnetic energy flux and related field momentum, in general, come into the contradiction with the relativistic transformation of four-vector of total energy–momentum. We show that this inconsistency stems from the incorrect application of Poynting theorem to a system of discrete point-like charges, when the terms of self-interaction in the product \ and bound electric field \ are generated by the same source (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  50. General Classical Electrodynamics.van Vlaenderen Koen - 2016 - Universal Journal of Physics and Application 10 (4):128-140.
    Maxwell’s Classical Electrodynamics (MCED) suffers several inconsistencies: (1) the Lorentz force law of MCED violates Newton’s Third Law of Motion (N3LM) in case of stationary and divergent or convergent current distributions; (2) the general Jefimenko electric field solution of MCED shows two longitudinal far fields that are not waves; (3) the ratio of the electrodynamic energy-momentum of a charged sphere in uniform motion has an incorrect factor of 4/3. A consistent General Classical Electrodynamics (GCED) is presented that is based on (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
1 — 50 / 1643