Results for 'speed of light'

1000+ found
Order:
  1. is the speed of light knowable a priori.Ilhan Inan - 2017 - In Suster Danilo (ed.), Thought Experiments between Nature and Society. A Festschrift for Nenad Miščević. Cambridge Scholars Publishing. pp. 204-215.
    Download  
     
    Export citation  
     
    Bookmark  
  2. Universal one-way light speed from a universal light speed over closed paths.Ettore Minguzzi & Alan Macdonald - 2003 - Foundations Of Physics Letters 16:593-604.
    This paper gives two complete and elementary proofs that if the speed of light over closed paths has a universal value c, then it is possible to synchronize clocks in such a way that the one-way speed of light is c. The first proof is an elementary version of a recent proof. The second provides high precision experimental evidence that it is possible to synchronize clocks in such a way that the one-way speed of (...) has a universal value. We also discuss an old incomplete proof by Weyl which is important from an historical perspective. (shrink)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  3. Clock synchronization, a universal light speed, and the terrestrial redshift experiment.Alan Macdonald - 1983 - American Journal of Pyysics 51:795-797.
    This paper (i) gives necessary and sufficient conditions that clocks in an inertial lattice can be synchronized, (ii) shows that these conditions do not imply a universal light speed, and (iii) shows that the terrestrial redshift experiment provides evidence that clocks in a small inertial lattice in a gravitational field can be synchronized.
    Download  
     
    Export citation  
     
    Bookmark   2 citations  
  4. Character, Corruption, and ‘Cultures of Speed’ in Higher Education.Ian Kidd - 2022 - In Ainé Mahon (ed.), Philosophical Perspectives on the Contemporary University: In Shadows and Light. Springer. pp. 17-28.
    This chapter offers a character-based criticism of ‘the culture of speed’ condemned by the Canadian literary scholars, Maggie Berg and Barbara Seeber in their influential polemic, The Slow Professor. Central to their criticisms of speed and praise of slowness are, I argue, substantive concerns about their effects on moral and intellectual character. I argue that a full reckoning of the wrongs of academic cultures of speed must include appreciation of the ways they promote a host of accelerative (...)
    Download  
     
    Export citation  
     
    Bookmark  
  5. The Cognitive Mechanisms Underlying the Concept of ‫سرعة‬ (Speed) in Arabic.Hicham Lahlou - 2023 - Awej 7 (1):21-32.
    Despite the wide range of studies on how students’ past knowledge influences their understanding of scientific terminology, few studies were conducted to compare non-scientific language with scientific language, or rather everyday language with scientific language, from a cognitive linguistic perspective. The present paper aims to determine the cognitive mechanisms, i.e., image schemas, conceptual metaphor, and conceptual metonymy, which underpin the conceptualisation of the Arabic term سرعة (speed), using a conceptual metaphor theory framework. Thus, the research question guiding this study (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  6. Three possible implications of spacetime discreteness.Shan Gao - 2013
    We analyze the possible implications of spacetime discreteness for the special and general relativity and quantum theory. It is argued that the existence of a minimum size of spacetime may explain the invariance of the speed of light in special relativity and Einstein’s equivalence principle in general relativity. Moreover, the discreteness of spacetime may also result in the collapse of the wave function in quantum mechanics, which may provide a possible solution to the quantum measurement problem. These interesting (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  7.  55
    Light and Mass. Relativity and Absoluteness as Intrinsically Connected Moments.Dieter Wandschneider - 2008 - In W. Neuser & J. Kohne (eds.), Neuser, W. / Kohne, J. (ed. 2008), Hegels Licht-Konzepte. Würzburg: Königshausen & Neumann. pp. 79–92. Translated by E. Kummert.
    Our starting point is the question ‘What is mass’, what in particular enables mass to constitute duration: so that mass can be regarded as moving as well as at rest (the kinematic principle of relativity). In a thought experiment, this question is attacked here not from the perspective of mass itself, but from that of a standing light wave. In this model, mass-analogous structures can be re- constructed that can be in relative motion to each other. The (empirically known) (...)
    Download  
     
    Export citation  
     
    Bookmark  
  8. Why Is c A Cosmic Speed Limit?Dan J. Bruiger - manuscript
    The Lorentz transformations can be interpreted either in ontological or epistemic terms. The invariance of c could have a different interpretation, as a side-effect of the exclusive role of light as signal between frames of reference. It would not necessarily pose an absolute cosmic speed limit. Time dilation would have a different explanation.
    Download  
     
    Export citation  
     
    Bookmark  
  9. Death, Faster Than Light Travel, and Einstein.Mark Walker - 2015 - In Charles Tandy (ed.), Death And Anti-Death, Volume 13: Sixty Years After Albert Einstein (1879-1955). Ria University Press. pp. 1-24.
    This paper describes a thought experiment that shows that people can travel faster than the speed of light: we are not bound by Einstein’s speed limit. Of course, any two-bit sci-fi story can describe faster-than-light travel. The difference is that the thought experiment proposed here is consistent with Einstein’s theory. The way to extricate ourselves from this seeming contradiction is to acknowledge that persons are not entirely physical. In other words, the explanation for why faster-than-light (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  10. Multi-level computational methods for interdisciplinary research in the HathiTrust Digital Library.Jaimie Murdock, Colin Allen, Katy Börner, Robert Light, Simon McAlister, Andrew Ravenscroft, Robert Rose, Doori Rose, Jun Otsuka, David Bourget, John Lawrence & Chris Reed - 2017 - PLoS ONE 12 (9).
    We show how faceted search using a combination of traditional classification systems and mixed-membership topic models can go beyond keyword search to inform resource discovery, hypothesis formulation, and argument extraction for interdisciplinary research. Our test domain is the history and philosophy of scientific work on animal mind and cognition. The methods can be generalized to other research areas and ultimately support a system for semi-automatic identification of argument structures. We provide a case study for the application of the methods to (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  11. [Early First Draft] Must Minkowski Spacetime be Categorized as Pseudoscience? (Revisiting the legitimacy of Mansouri-Sexl test theory).Shiva Meucci - manuscript
    Here we discuss and hope to solve a problem rooted in the necessity of the study of historical science, the slow deviation of physics education over the past century, and how the loss of crucial contextual tool has debilitated discussion of a very important yet specialized physics sub-topic: the isotropy of the one-way speed of light. Most notably, the information that appears to be most commonly missing is not simply the knowledge of the historical fact that Poincare and (...)
    Download  
     
    Export citation  
     
    Bookmark  
  12. Theory of erasing (dropping) the Present.Jalal Khawaldeh - 2023 - Https://Papers.Ssrn.Com/Sol3/Papers.Cfm?Abstract_Id=4568243.
    Time has puzzled scientists. Some see it as just a tool and a unit of measurement, while others consider time to be a real thing and needs to be measured. There are also those who believe that time is an ancient thing that arose with the creation of the universe and the Earth, running parallel to life in them, and counting every movement, event, or speed in them. While some see it as an essential part and a major component (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  13. The Emergence of the Physical World from Information Processing.Brian Whitworth - 2010 - Quantum Biosystems 2 (1):221-249.
    This paper links the conjecture that the physical world is a virtual reality to the findings of modern physics. What is usually the subject of science fiction is here proposed as a scientific theory open to empirical evaluation. We know from physics how the world behaves, and from computing how information behaves, so whether the physical world arises from ongoing information processing is a question science can evaluate. A prima facie case for the virtual reality conjecture is presented. If a (...)
    Download  
     
    Export citation  
     
    Bookmark   4 citations  
  14. The Media of Relativity.Jimena Canales - 2015 - Technology and Culture 56 (3):610-645.
    How are fundamental constants, such as c for the speed of light, related to particular technological environments? Our understanding of the constant c and Einstein’s relativistic cosmology depended on key experiences and lessons learned in connection to new forms of telecommunications, first used by the military and later adapted for commercial purposes. Many of Einstein’s contemporaries understood his theory of relativity by reference to telecommunications, some referring to it as “signal-theory” and “message theory.” Prominent physicists who contributed to (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  15. Mystical Theology of St. Simeon New Theologian.Metropolitan Hilarion of Volokolamsk - 2015 - European Journal for Philosophy of Religion 7 (2):3-20.
    The article deals with the problem of the divine light in the mystical works of St Symeon the New Theologian in the context of the Eastern Christian ascetical tradition. The author focuses on the passages referring to the divine light in the works of Evagrios Pontikos, St Isaac the Syrian, St Maximus the Confessor, and in the Makarian corpus. As is shown in the present contribution, none of these authors created a fully-developed theory of the vision of the (...)
    Download  
     
    Export citation  
     
    Bookmark  
  16. Mathematics' Poincare Conjecture and The Shape of the Universe.Rodney Bartlett - 2011 - Tomorrow's Science Today.
    intro to Part 1 - -/- Most people disliked mathematics when they were at school and they were absolutely correct to do so. This is because maths as we know it is severely incomplete. No matter how elaborated and complicated mathematical equations become, in today's world they're based on 1+1=2. This certainly conforms to the world our physical senses perceive and to the world scientific instruments detect. It has been of immeasurable value to all knowledge throughout history and has elevated (...)
    Download  
     
    Export citation  
     
    Bookmark  
  17. The Law of Conservation of Time and Its Applications.Ninh Khac Son - manuscript
    Time is a complex category not only in philosophy but also in mathematics and physics. In one thought about time, the author accidentally discovered a new way to explain and solve problems related to time dilation, such as solving the problem of Muon particle when moving from a height of 10 km to the earth’s surface, while the Muon’s lifespan is only 2.2 microseconds, or explaining Michelson-Morley experiment using the new method. In addition, the author also prove that the (...) of light in vacuum is the maximum speed in the universe, and discovered the red shift effect while there is no increase in distance between objects. To do this, the author has built two axioms based on the discontinuity in the motion of the object and draw two consequences along with the law of conservation of time. (shrink)
    Download  
     
    Export citation  
     
    Bookmark  
  18. On the concept of (quantum) fields.Sydney Ernest Grimm - manuscript
    The main concept of quantum field theory is the conviction that all the phenomena in the universe are created by the underlying structure of the quantum fields. Fields represent dynamical spatial properties that can be described with the help of geometrical concepts. Therefore it is possible to describe the mathematical origin of the structure of the creating fields and show the mathematical origin of the law of conservation of energy, Planck’s constant and the constant speed of light within (...)
    Download  
     
    Export citation  
     
    Bookmark   5 citations  
  19. A Study on Invariance of Temporal Coincidence.Andrew Wutke - manuscript
    This paper presents an attempt to define temporal coincidence starting from the first principles. The temporal coincidence defined here differs from Einstein’s simultaneity for it is invariant across inertial frames - not relative. The meaning and significance of temporal coincidence is derived from axioms of existence and it somehow relates to Kant’s notion of simultaneity. Consistentl y applied to the Special Theory of Relativity framework, temporal coincidence does not in any way create mathematical contradictions; however it allows looking at some (...)
    Download  
     
    Export citation  
     
    Bookmark  
  20. Review of The Inflationary Universe by Alan Guth (1997).Michael Starks - 2016 - In Suicidal Utopian Delusions in the 21st Century: Philosophy, Human Nature and the Collapse of Civilization-- Articles and Reviews 2006-2017 2nd Edition Feb 2018. Michael Starks. pp. 615-618.
    This is one of the best popular cosmology books ever written and Guth is now (2016) a top physics Professor at MIT. He tells the extremely complex story of inflation and related areas of particle physics in such an absorbing style that it reads like a detective novel-in fact, it is a detective novel-how he and others found out how the universe started! The interweaving of his personal story and that of many colleagues along with their photos and many wonderfully (...)
    Download  
     
    Export citation  
     
    Bookmark  
  21. What is the upper limit of value?David Manheim & Anders Sandberg - manuscript
    How much value can our decisions create? We argue that unless our current understanding of physics is wrong in fairly fundamental ways, there exists an upper limit of value relevant to our decisions. First, due to the speed of light and the definition and conception of economic growth, the limit to economic growth is a restrictive one. Additionally, a related far larger but still finite limit exists for value in a much broader sense due to the physics of (...)
    Download  
     
    Export citation  
     
    Bookmark  
  22. The twin paradox and Einstein mistake.Victor Orsini - manuscript
    Time contraction is not a property of the moving body. Permanent contraction is against the constancy of the speed of light. Einstein uses wrong units of measurement and comes to wrong conclusions. We use the translation of the article "On the electrodynamics of moving bodies".
    Download  
     
    Export citation  
     
    Bookmark  
  23.  75
    Identification of highlights in early vision.Ronald A. Rensink - 1994 - Investigative Ophthalmology and Visual Science 35:1623.
    Purpose. To determine whether highlights are rapidly identified at early levels of vision. -/- Methods. Visual search experiments were carried out using simple black and white figures corresponding to shiny objects lit from various directions. These included, for example, depictions of cylinders with highlights positioned at various heights (see figure). Targets and distractors differed only in the arrangement of their constituent regions, allowing them to be distinguished by the position of the highlights on the corresponding objects. -/- Results. Three observers (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  24. Philosophical dogmatism inhibiting the anti-Copernican interpretation of the Michelson Morley experiment.Spyridon Kakos - 2020 - Harmonia Philosophica 1.
    From the beginning of time, humans believed they were the center of the universe. Such important beings could be nowhere else than at the very epicenter of existence, with all the other things revolving around them. Was this an arrogant position? Only time will tell. What is certain is that as some people were so certain of their significance, aeons later some other people became too confident in their unimportance. In such a context, the Earth quickly lost its privileged position (...)
    Download  
     
    Export citation  
     
    Bookmark  
  25. The influence of cast shadows on visual search.Ronald A. Rensink & Patrick Cavanagh - 2004 - Perception 33:1339-1358.
    We show that cast shadows can have a significant influence on the speed of visual search. In particular, we find that search based on the shape of a region is affected when the region is darker than the background and corresponds to a shadow formed by lighting from above. Results support the proposal that an early-level system rapidly identifies regions as shadows and then discounts them, making their shapes more difficult to access. Several constraints used by this system are (...)
    Download  
     
    Export citation  
     
    Bookmark   11 citations  
  26. The c-aplpha Non Exclusion Principle and the vastly different internal electron and muon center of charge vacuum fluctuation geometry.Jim Wilson - forthcoming - Physics Essays.
    The electronic and muonic hydrogen energy levels are calculated very accurately [1] in Quantum Electrodynamics (QED) by coupling the Dirac Equation four vector (c ,mc2) current covariantly with the external electromagnetic (EM) field four vector in QED’s Interactive Representation (IR). The c -Non Exclusion Principle(c -NEP) states that, if one accepts c as the electron/muon velocity operator because of the very accurate hydrogen energy levels calculated, the one must also accept the resulting electron/muon internal spatial and time coordinate operators (ISaTCO) (...)
    Download  
     
    Export citation  
     
    Bookmark  
  27. Energy in the Universe and its Syntropic Forms of Existence According to the BSM - Superg ravitation Unified Theory.Stoyan Sarg Sargoytchev - 2013 - Syntropy 2013 (2).
    According to the BSM- Supergravitation Unified Theory (BSM-SG), the energy is indispensable feature of matter, while the matter possesses hierarchical levels of organization from a simple to complex forms, with appearance of fields at some levels. Therefore, the energy also follows these levels. At the fundamental level, where the primary energy source exists, the matter is in its primordial form, where two super-dense fundamental particles (FP) exist in a classical pure empty space (not a physical vacuum). They are associated with (...)
    Download  
     
    Export citation  
     
    Bookmark  
  28. EFFECTIVENESS OF UTILIZING INDUCED MAGNETISM ON THE SEED GERMINATION OF RADISH (RAPHANUS SATIVUS).Melanie Dawn C. Aquita, Blanch Byrel E. Fadera, Marie Antonette V. Biado, Caryl Faith B. Gonzales, Ajaye G. Uminga & Raffy S. Virtucio - 2023 - Get International Research Journal 1 (2).
    This study investigated the effectiveness of utilizing induced magnetism on the seed germination of radish (Raphanussativus) in terms of growth rate, growth speed, shoot growth, and overall development. This study utilized two groups that consisted of an experimental group where induced magnetism was present one control group where there was an absence of induced magnetism in the seed germination of Radish (Raphanus sativus). Moreover, this study aimed to determine the significant difference between the two in terms growth rate, growth (...)
    Download  
     
    Export citation  
     
    Bookmark  
  29. 2. Programming relativity as the mathematics of perspective in a Planck unit Simulation Hypothesis.Malcolm Macleod - manuscript
    The Simulation Hypothesis proposes that all of reality is in fact an artificial simulation, analogous to a computer simulation. Outlined here is a method for programming relativistic mass, space and time at the Planck level as applicable for use in Planck Universe-as-a-Simulation Hypothesis. For the virtual universe the model uses a 4-axis hyper-sphere that expands in incremental steps (the simulation clock-rate). Virtual particles that oscillate between an electric wave-state and a mass point-state are mapped within this hyper-sphere, the oscillation driven (...)
    Download  
     
    Export citation  
     
    Bookmark  
  30. Gauge Symmetry and Invariant Features of Particles and Photons: Insights into Duality, Time’s Arrow and Nonlocality.Paul Klevgard - manuscript
    Particles and photons appear to be total opposites; the former has rest mass which requires space to exist; the latter has kinetic energy which requires time to occur (oscillate). But they do share certain properties (e.g., quantization) that remain invariant when one is transformed (swapped) for the other. This gauge invariance is developed in some detail. The symmetry between particle and photon turns out to be one of inversion. It is the equalities of special relativity that support this inversion and (...)
    Download  
     
    Export citation  
     
    Bookmark  
  31. Scrutiny of Einstein’s Causality.Mohamed Elmansour Hassani - manuscript
    In the present paper, the so-called Einstein’s causality is scrutinized and proven to be an illusion, a sort of mathematical fiction, and the causality as a well-established universal principle would be absolutely valid for subluminal, luminal and superluminal signals under any natural and/or artificial circumstances. It is also shown that any attempt to apply special relativity theory to superluminality of physical phenomena would be a complete waste of time since this theory has the light speed in vacuum as (...)
    Download  
     
    Export citation  
     
    Bookmark  
  32. Special Relativity in a Universe of Flowing Time.Ted Dace - 2015 - International Journal of Fundamental Physical Sciences 5 (3).
    By eliminating the need for an absolute frame of reference or ether, Einstein resolved the problem of the constancy of light-speed in all inertial frames but created a new problem in our understanding of time. The resolution of this problem requires no experimentation but only a careful analysis of special relativity, in particular the relativity of simultaneity. This concept is insufficiently relativistic insofar as Einstein failed to recognize that any given set of events privileges the frame in which (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  33. Restricted Diachronic Composition and Special Relativity.Stephan Torre - 2015 - British Journal for the Philosophy of Science 66 (2):235-255.
    When do objects at different times compose a further object? This is the question of diachronic composition. The universalist answers, ‘under any conditions whatsoever’. Others argue for restrictions on diachronic composition: composition occurs only when certain conditions are met. Recently, some philosophers have argued that restrictions on diachronic compositions are motivated by our best physical theories. In Persistence and Spacetime and elsewhere, Yuri Balashov argues that diachronic compositions are restricted in terms of causal connections between object stages. In a recent (...)
    Download  
     
    Export citation  
     
    Bookmark   2 citations  
  34. Hilbert Mathematics versus Gödel Mathematics. III. Hilbert Mathematics by Itself, and Gödel Mathematics versus the Physical World within It: both as Its Particular Cases.Vasil Penchev - 2023 - Philosophy of Science eJournal (Elsevier: SSRN) 16 (47):1-46.
    The paper discusses Hilbert mathematics, a kind of Pythagorean mathematics, to which the physical world is a particular case. The parameter of the “distance between finiteness and infinity” is crucial. Any nonzero finite value of it features the particular case in the frameworks of Hilbert mathematics where the physical world appears “ex nihilo” by virtue of an only mathematical necessity or quantum information conservation physically. One does not need the mythical Big Bang which serves to concentrate all the violations of (...)
    Download  
     
    Export citation  
     
    Bookmark  
  35. Précis of Brentano's Philosophical System.Uriah Kriegel - 2021 - European Journal of Philosophy 31 (2):455-457.
    Here is a rather difficult two-part question: How may we grasp (a) the nature of reality and (b) the nature of value? As I understand the man, answering this question was the principal, overarching aim of Franz Brentano’s philosophical work. More specifically, he wanted to provide an answer that respected a self-imposed theoretical constraint, namely, that our grasp of a thing’s status as real or as valuable be ultimately grounded in direct encounter with certain aspects of our conscious experience. The (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  36. Is Time Misconception of the Transformations Possible?Mesut Kavak - manuscript
    Time is quite interesting phenomenon in physics, and it seems is relative; but what does it mean to be relative of time? What does to be fixed of light speed mean? Does to be fixed of light speed require observation at light speed? What if we can observe faster than light speed because of increased frame number? Is time effective for this imaginary effect or also time itself is dependent on another actual (...)
    Download  
     
    Export citation  
     
    Bookmark   1 citation  
  37.  72
    Recent Experimental Findings supporting Smarandache’s Hypothesis and Quantum Sorites Paradoxes and SubQuantum Kinetic Model of Electron.Victor Christianto, Robert N. Boyd & Florentin Smarandache - manuscript
    Smarandache Hypothesis states that there is no speed limit of anything, including light and particles. While the idea is quite simple and based on known hypothesis of quantum mechanics, called Einstein-Podolski-Rosen paradox, in reality such a superluminal physics seems still hard to accept by majority of physicists. Here we review some experiments to support superluminal physics and also findings to explain Smarandache Quantum Paradoxes and Quantum Sorites Paradox. We also touch briefly on new experiment on magneton, supporting SubQuantum (...)
    Download  
     
    Export citation  
     
    Bookmark  
  38. Origin of Matter and Time.John Linus O'Sullivan - forthcoming - AuthorsDen.
    Abstract: Standing half wave particles at light speed twice in expansion-contraction comprise a static universe where two transverse fields 90° out of phase are the square of distance from each other. The universe has a static concept of time since the infinite universe is a static universe without a beginning or end. The square of distance is a point of reversal in expansion-contraction between the fields as a means to conserve energy. Photons on expansion in the electric field (...)
    Download  
     
    Export citation  
     
    Bookmark  
  39. Figures of Light in the Early History of Relativity.Scott A. Walter - 2018 - In David E. Rowe, Tilman Sauer & Scott A. Walter (eds.), Beyond Einstein: Perspectives on Geometry, Gravitation, and Cosmology in the Twentieth Century. New York, USA: Springer New York. pp. 3-50.
    Albert Einstein’s bold assertion of the form invariance of the equation of a spherical light wave with respect to inertial frames of reference became, in the space of 6 years, the preferred foundation of his theory of relativity. Early on, however, Einstein’s universal light-sphere invariance was challenged on epistemological grounds by Henri Poincaré, who promoted an alternative demonstration of the foundations of relativity theory based on the notion of a light ellipsoid. A third figure of light, (...)
    Download  
     
    Export citation  
     
    Bookmark  
  40. 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 done, (...)
    Download  
     
    Export citation  
     
    Bookmark   7 citations  
  41. Special Relativity in Superposition.Ted Dace - 2022 - Axiomathes 32 (2):199-213.
    By deriving the Lorentz transformation from the absolute speed of light, Einstein demonstrated the relativistic variability of space and time, enabling him to explain length contraction and time dilation without recourse to a "luminiferous ether" or preferred frame of reference. He also showed that clocks synchronized at a distance via light signals are not synchronized in a frame of reference differing from that of the clocks. However, by mislabeling the relativity of synchrony the "relativity of simultaneity," Einstein (...)
    Download  
     
    Export citation  
     
    Bookmark  
  42. Figures of light in the early history of relativity (1905-1914).Scott A. Walter - 2018 - In David Rowe (ed.), Einstein Studies. Birkhäuser. pp. 3-50.
    Albert Einstein's bold assertion of the form-invariance of the equation of a spherical light wave with respect to inertial frames of reference became, in the space of six years, the preferred foundation of his theory of relativity. Early on, however, Einstein's universal light-sphere invariance was challenged on epistemological grounds by Henri Poincaré, who promoted an alternative demonstration of the foundations of relativity theory based on the notion of a light-ellipsoid. Drawing in part on archival sources, this paper (...)
    Download  
     
    Export citation  
     
    Bookmark  
  43. The world, the brain, and the speed of sight.Ronald A. Rensink - 1996 - In David C. Knill & Whitman Richards (eds.), Perception as Bayesian Inference. Cambridge University Press. pp. 495-498.
    Adelson & Pentland (Chapter 11) use an engaging metaphor to illustrate their position on scene analysis: interpretations are produced by a workshop that employs a set of specialists, each concerned with a single aspect of the scene. The authors argue that it is too expensive to have a supervisor co-ordinate the specialists and that it is too expensive to let them operate independently. They then show that a careful sequencing of the specialists leads to solutions of minimum cost, at least (...)
    Download  
     
    Export citation  
     
    Bookmark  
  44. Einstein's Discourse Networks.Jimena Carnales - 2014 - Zeitschrift für Medien- Und Kulturforschung 2014 (1):11-39.
    This paper situates Einstein's theory of relativity within broader networks of communication. The speed of light, explained Einstein, was an unsurpassable velocity if , and only if , it was considered in terms of »arbitrary« and »voluntary« signals. Light signals in physics belong within a broader set of signs and symbols that include communication and military signals, understood by reference to Helmholtz, Saussure, media philosophies from WWII to '68 (Lavelle, Ong, McLuhan) and Derrida. Once light signals (...)
    Download  
     
    Export citation  
     
    Bookmark  
  45. Firms cash management, adjustment cost and its impact on firms’ speed of adjustment: a cross country analysis.Qazi Awais Amin & Tom Williamson - 2020 - Review of Quantitative Finance and Accounting 56.
    We investigate the firms’ specific attributes that determine the difference in speed of adjustment (SOA) towards the cash holdings target in the Scandinavian countries: Denmark, Norway and Sweden. We examine whether Scandinavian firms maintain an optimal level of cash holdings and determine if the active cash holdings management is associated with the firms’ higher SOA and lower adjustment costs. Our findings substantiate that a higher level of off-target cost induces professional managers to rebalance their cash level towards the optimal (...)
    Download  
     
    Export citation  
     
    Bookmark  
  46. Reality in Perspectives.Mahdi Khalili - 2022 - Dissertation, Vu University Amsterdam
    This dissertation is about human knowledge of reality. In particular, it argues that scientific knowledge is bounded by historically available instruments and theories; nevertheless, the use of several independent instruments and theories can provide access to the persistent potentialities of reality. The replicability of scientific observations and experiments allows us to obtain explorable evidence of robust entities and properties. The dissertation includes seven chapters. It also studies three cases – namely, Higgs bosons and hypothetical Ϝ-particles (section 2.4), the Ptolemaic and (...)
    Download  
     
    Export citation  
     
    Bookmark   2 citations  
  47. Perspectivism and Special Relativity.Mahdi Khalili - 2021 - Teorie Vědy / Theory of Science 43 (2):191-217.
    The special theory of relativity holds significant interest for scientific perspectivists. In this paper, I distinguish between two related meanings of “perspectival,” and argue that reference frames are perspectives, provided that perspectival means “being conditional” rather than “being partial.” Frame-dependent properties such as length, time duration, and simultaneity, are not partially measured in a reference frame, but their measurements are conditional on the choice of frame. I also discuss whether the constancy of the speed of light depends on (...)
    Download  
     
    Export citation  
     
    Bookmark   3 citations  
  48. Change blindness: Implications for the nature of visual attention.Ronald A. Rensink - 2001 - In L. Harris & M. Jenkin (eds.), Vision and Attention. New York: Academic Press. pp. 16-20.
    In the not-too-distant past, vision was often said to involve three levels of processing: a low level concerned with descriptions of the geometric and photometric properties of the image, a high level concerned with abstract knowledge of the physical and semantic properties of the world, and a middle level concerned with anything not handled by the other two. The negative definition of mid-level vision contained in this description reflected a rather large gap in our understanding of visual processing: How could (...)
    Download  
     
    Export citation  
     
    Bookmark   7 citations  
  49. a wormhole of light by using electronic materials.Areena Bhatti - 2020 - Physics Tomorrow Letters 2:9.
    Wormhole is a popular tool for interstellar travel in science fiction. It connects two different space-time points directly although such an astrophysical object is not yet observed, but in 2015, researchers in Spain created a tiny magnetic wormhole for the first time ever. They used it to connect two regions of space so that a magnetic field could travel 'invisibly' between them. This article presents a model of making a wormhole of light on the principle of conversion of energy (...)
    Download  
     
    Export citation  
     
    Bookmark  
  50. Philosophy of light.Floyd Irving Lorbeer - 1932 - Los Angeles, Calif.,: Wetzel publishing co..
    Download  
     
    Export citation  
     
    Bookmark  
1 — 50 / 1000