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  1. added 2020-10-09
    Physics is Part of Culture and the Basis of Technology.Stephan Hartmann & Jürgen Mittelstrass - 2000 - In Dpg (ed.), Physics - Physics Research: Topics, Significance and Prospects. DPG.
    Fundamental aspects of modern life owe their existence to the achievements of scientific reason. In other words, science is an integral element of the modern world and simultaneously the epitome of the rational nature of a technical culture that makes up the essence of the modern world. Without science, the modern world would lose its very nature and modern society its future. Right from the start, physics forms the core of European scientific development. It is the original paradigm of science, (...)
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  2. added 2020-10-04
    Termodinamica: Legi, Concepte, Sisteme, Stări.Sfetcu Nicolae - manuscript
    Termodinamica se ocupă cu studiul energiei, a conversiilor sale între diferite forme, cum ar fi căldura, și capacitatea energiei de a produce lucru mecanic. Ea este strâns legată de mecanica statistică, din care pot fi derivate multe relații termodinamice. Se poate argumenta că termodinamica a fost greșit denumită astfel întrucât aceasta nu se referă de fapt la rate de schimbare ca atare și, prin urmare, ar fi fost probabil mai corect ca domeniul să se denumească termostatica. Termodinamica se referă la (...)
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  3. added 2020-09-26
    The Statistical Physics of Clicks and Counts: On the Origin of the Wavefunction.Alexandre Harvey Tremblay - manuscript
    In 1926, Max Born postulated the famous rule bearing his name so as to make the quantum mechanical description formulated in terms of complex amplitude terminate into a real-valued probability that is directly comparable to experimental incidence counting. As of now, the rule has no generally accepted fundamental mathematical origin and is taken as a postulate of quantum mechanics in the textbook formulation. I have created a "home-brewed" extension of statistical physics able to tackle, essentially, what John A. Wheeler refers (...)
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  4. added 2020-09-18
    Consciousness and Creativity: Federico Faggin's Notes / Consapevolezza e Creativita': Appunti di Federico Faggin.Enrique Canessa - manuscript
    A set of notes on consciousness and creativity by Federico Faggin are here collected. Federico Faggin, Italian-American physicist and 2009 U.S. National Medal of Technology and Innovation, is best known for designing and creating the first commercial microprocessor, the Intel 4004. Faggin's curiosity about consciousness started in the late eighties when he asked himself if it was possible to develop a conscious computer. Faggin reveals here the main aspects and beliefs of his model about consciousness, fruit of his creative experiences (...)
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  5. added 2020-09-12
    Mathematical Undecidability, Quantum Nonlocality, and the Question of the Existence of God.Alfred Driessen & Antoine Suarez (eds.) - 1997 - Springer.
    The title of the present book suggests that scientific results obtained in mathematics and quantum physics can be in some way related to the question of the existence of God. This seems possible to us, because it is our conviction that reality in all its dimensions is intelligible. The really impressive progress in science and technology demonstrates that we can trust our intellect, and that nature is not offering us a collection of meaningless absurdities. We first of all intend to (...)
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  6. added 2020-09-09
    Tests cosmologiques gravitationnels: l'univers en expansion.Sfetcu Nicolae - manuscript
    Les modèles cosmologiques actuels sont construits sur la base de la relativité générale. Les solutions des équations spécifiques, Friedmann-Lemaître-Robertson-Walker, permettent de modéliser l'évolution de l'univers à partir du Big Bang . Certains paramètres de l'univers ont été établis par des observations. Sur la base de ces données et d'autres données d'observation, les modèles peuvent être testés . Les observations sur la vitesse d'expansion de l'univers permettent d'estimer la quantité totale de matière, dont certaines théories prédisent que 90% sont de la (...)
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  7. added 2020-07-22
    Development of a Manufacturing Ontology for Functionally Graded Materials.Francesco Furini, Rahul Rai, Barry Smith, Georgio Colombo & Venkat Krovi - 2016 - In Proceedings of International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (IDETC/CIE).
    The development of manufacturing technologies for new materials involves the generation of a large and continually evolving volume of information. The analysis, integration and management of such large volumes of data, typically stored in multiple independently developed databases, creates significant challenges for practitioners. There is a critical need especially for open-sharing of data pertaining to engineering design which together with effective decision support tools can enable innovation. We believe that ontology applied to engineering (OE) represents a viable strategy for the (...)
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  8. added 2020-07-19
    Постигая мироздание. Физико-философские очерки.Alexander Klimets - 2012 - Saarbrucken, Germany: LAP LAMBERT Academic Publishing.
    В книге на основе определенного философского подхода и под новым углом зрения рассматриваются: 1. Специальная теория относительности. Сущность указанной теории раскрывается с помощью метода моделирования. Это позволяет понять не только действительный смысл преобразований Лоренца, но и решить проблему инертной и тяжелой масс. 2. Рассматриваются геоны - экзотические объекты, появляющиеся в результате гравитационного взаимодействия безмассовых квантов энергии. 3. Обсуждаются некоторые необычные свойства многомерных пространств. Показано, почему наше пространство трехмерно и как возможно поместить наблюдаемую Веленную в геометрической точке;. 4. Выполнено квантование знаменитого (...)
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  9. added 2020-07-14
    Proliferation of Post-Newtonian, Non-Relativistic Theories.Nicolae Sfetcu - manuscript
    Theoreticians have formulated a set of fundamental criteria that any theory of gravity should satisfy, two purely theoretical and two that are based on experimental evidence. Thus, a theory must be complete (capable of analyzing from the "first principles" the result of any experiment of interest), self-consistent (its prediction for the outcome of each experiment must be unique), relativistic (at the limit when gravity is neglected compared to other physical interactions, non-gravitational laws of physics must be reduced to special relativity (...)
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  10. added 2020-07-03
    Coronavirus Vaccine — Where We Are Now.Flora Graham - 2020 - Nature 582 (7811):1-4.
    Catch up on the status of the more than 135 vaccines in development against the SARS-CoV-2 virus, ponder the biology and physics of free will and learn how scientists helped win the battle over evolution in US classrooms.
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  11. added 2020-06-24
    Dark Origins: Departure From an Ex-Nihilo Big Bang.Onyemaechi Ahanotu - manuscript
    With the growing body of research on Black Holes, it is becoming increasingly apparent that these celestial objects may have a stronger part to play in the universe than previously thought, shaping galaxies and influencing star formation. In this manuscript, I take these findings a step further, proposing a new set of boundary conditions to both the early and late Universe, extrapolating from thermodynamics. I propose that the Universe will collapse into a massive black hole and that the Big Bang (...)
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  12. added 2020-06-15
    Prolifération des théories post-einsteiniennes - Formalisme paramétrisé post-newtonien (PPN).Nicolae Sfetcu - manuscript
    Immédiatement après l'élaboration et le succès de la relativité générale, des théories alternatives pour la gravité ont commencé à apparaître. En développant ces théories, de nombreuses stratégies différentes (heuristiques positives) ont été essayées, en ajoutant de nouvelles hypothèses à la RG, en utilisant un espace-temps pour lequel l'univers est statique, des hypothèses qui éliminent les singularités gravitationnelles, etc. Pour l'évaluation des modèles de gravité, plusieurs séries de tests ont été proposées. Le formalisme paramétrisé post-newtonien (PPN) détaille les paramètres qui différencient (...)
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  13. added 2020-06-08
    Le modèle atomique de Bohr, un exemple de programme de recherche.Nicolae Sfetcu - manuscript
    Le modèle atomique de Bohr a été l'un des exemples les plus brillants de la méthodologie des programmes de recherche d'Imre Lakatos. Les grandes lignes du programme de recherche de Bohr (Bohr 1913) peuvent être caractérisées par : 1. Le problème initial ; 2. Ses heuristiques négatives et positives ; 3. Les problèmes qu'il a tenté de résoudre au cours du développement ; 4. Son point de dégénérescence (point de saturation) et, enfin, 5. Le programme par lequel il a été (...)
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  14. added 2020-05-24
    Business as usual and Ovsyankina effect.Andrej Poleev - 2020 - Enzymes 18.
    Die Wiederaufnahme unterbrochener Handlungen nach der Aussetzung der Maßnahmen zur Eindämmung von CoVid19 veranschaulicht Unveränderlichkeit und Unvergänglichkeit regressives Zustandes, in dem sich weite Teile der Bevölkerung befinden. Nach kurzer Unterbrechung kommt alles in gewöhnten Kreis alltäglicher Routine und Gedankenlosigkeit, mit denen solche Aufgaben erledigt werden. Nichts, aber gar nichts änderte sich nach dem Unglück, das eigentlich, wie in meisten solchen Fällen, die Gelegenheit bietet, über sich selbst und die Welt nachzudenken.
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  15. added 2020-05-20
    Discovering Reality by Studying the System of Freedom and Proving Its Equivalence with the Universe.Kai Jiang - 2015 - Global Journal of Pure and Applied Mathematics 11 (5):3297-3309.
    The author has established a mathematical theory about the system of freedom in which components of freedom are ruled by the largest freedom principle, explaining how one invariant reality can be equated with the dynamical universe. Freedom as a whole is the reality, and components of freedom show variable phenomena and become a dynamic system. In freedom, component equality leads to sequence equality; therefore, various sequences coexist in the system. Because there are incompatible sequences for any sequence, the interior of (...)
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  16. added 2020-05-20
    真理进化论--模仿宇宙建立完美社会.Kai Jiang - 2005
    宇宙追求最小作用量,也就是最大负作用量,社会追求最大幸福,创新追求最大知识,“真理进化论”认为,这种类似不是偶然的,是由于追求之间的共性,追求方法的优越性与追求量的量纲无关,所以最好的追求方法适用于所 有追求系统。“真理进化论”认为,即使世界一无所有,只要拥有产生微小系统的自由,那么,最好的追求系统由于拥有最快的增长速度,就会获得最大的规模。增长是好的追求系统的标志,宇宙膨胀和社会发展都是增长的过程 。所有存在都可以来自于绝对的自由:只要允许产生所有微小系统,其中发展最快的系统最终必将成为宇宙。“真理进化论”在自然科学主要解决了真理的目的问题。“真理进化论”认为宇宙是目的性的,宇宙规律是追求最大负 作用量的最好方法。“真理进化论”采用目的论的方法解决所有宇宙和社会问题,将宇宙的一切规律和追求最大负作用量联系起来,将社会的一切行为和追求最大幸福联系起来,将创新行为和知识追求联系起来。在“追求科学” 中,追求目标处于核心地位,决定了系统的规律,决定了最佳追求方法。“真理进化论”也统一了人类社会的是非标准,提出建立“宇宙主义”社会:为了使人类社会成为完美社会,应该模仿完美追求系统---宇宙。法律代表 着大众共同遵守的追求方法,因此,应该将法律、道德、行政法规等统一为“一致遵守的追求方法”。法律的根本任务是鼓励符合最佳追求方法的行为,惩罚违反最佳追求方法的行为。法律的最终形式应该是完美追求方法体系, 因此,法律中的不完美部分应该有时限。模仿宇宙就可以建立完美的市场经济,例如,模仿时空建立统一市场,模仿电磁场传播让所有交易信息通过公开市场平等传播,准确发布信息等。在宇宙中,粒子有随时随地改变状态的自 由,因此,完美市场经济是彻底的自由主义经济,为了保护未来欲望的自由,要求全面推广短期合同,房屋、汽车、电器等耐用消费品应该采用短期租赁的方法;为了保障连续变化的自由,要求保护自由组合权利,尤其是劳动者 自由组合工作的权利。 .
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  17. added 2020-05-10
    Tests et anomalies des théories de la gravité post-newtoniennes.Nicolae Sfetcu - manuscript
    Dans la première édition du Principia, Newton considérait que des expériences avec le pendule lui permettraient de déchiffrer les différents types de force de résistance et leur variation avec la vitesse. Habituellement, le « laboratoire » des tests gravitationnels était les corps célestes, les systèmes astrophysiques. Mais ces tests sont perturbés par des effets non gravitationnels. Le « laboratoire » le plus utilisé était le système solaire. Récemment, les scientifiques se sont concentrés sur l'observation des pulsars binaires pour la vérification (...)
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  18. added 2020-05-08
    Prolifération des théories post-newtoniennes.Nicolae Sfetcu - manuscript
    Les théoriciens ont formulé un ensemble de critères fondamentaux que toute théorie de la gravité devrait satisfaire, deux purement théoriques et deux fondés sur des preuves expérimentales. Ainsi, une théorie doit être : complet (capable d'analyser à partir des « premiers principes » le résultat de toute expérience d'intérêt), auto-cohérent (sa prédiction pour le résultat de chaque expérience doit être unique), relativiste (à la limite où la gravité est négligée par rapport à d'autres interactions physiques, les lois non gravitationnelles de (...)
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  19. added 2020-04-29
    Dark Matter Nature.Jaykov Foukzon - 2019 - Journal of Physics: Conference Series 1391 (1).
    The cosmological constant problem arises because the magnitude of vacuum energy density predicted by quantum eld theory is about 120 orders of magnitude larger than the value implied by cosmological observations of accelerating cosmic expansion. We pointed out that the fractal nature of the quantum space-time with negative Hausdor - Colombeau dimensions can resolve this tension. The canonical Quantum Field Theory is widely believed to break down at some fundamental high-energy cuto  and therefore the quantum uctuations in the vacuum (...)
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  20. added 2020-04-27
    Introduction to the Neoclassical Interpretation: Quantum Steampunk.Shiva Meucci - forthcoming - Cosmos and History: The Journal of Natural and Social Philosophy.
    In a previous paper we outlined a series of historical touchpoints between classical aether theories and modern theoretical physics which showed a shared conceptual lineage for the modern tools and methods of the most common interpretations and fluid based “Hydrodynamic” treatments of an electromagnetic medium. It was proposed that, though the weight of modern experimentation leaves an extremely narrow and convoluted window for even a reconceptualization of a medium, all of modern physics recognizes a plethora of behaviors and attributes for (...)
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  21. added 2020-04-22
    Gravité et tests gravitationnels.Nicolae Sfetcu - manuscript
    Les théories scientifiques en général, en physique en particulier, sont confirmées (temporairement) par des expériences vérifiant les affirmations et les prédictions des théories, jetant ainsi les bases de la connaissance scientifique. Francis Bacon a été le premier à soutenir le concept d'une expérience cruciale, qui peut décider la validité d'une hypothèse ou d'une théorie. Plus tard, Newton a soutenu que les théories scientifiques sont directement induites par les résultats expérimentaux et les observations, excluant les hypothèses non vérifiées. DOI: 10.13140/RG.2.2.34744.70403 .
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  22. added 2020-04-20
    Epistémologie de la gravité expérimentale - Rationalité scientifique.Nicolae Sfetcu - 2020 - Drobeta Turnu Severin: MultiMedia Publishing.
    L'évolution des tests gravitationnels dans une perspective épistémologique encadré dans le concept de reconstruction rationnelle d'Imre Lakatos, fondée sur sa méthodologie de programmes de recherche. Contrairement à d'autres travaux sur le même sujet, la période évaluée est très longue, allant de la philosophie naturelle de Newton aux théories de la gravité quantique d'aujourd'hui. Afin d'expliquer de manière plus rationnelle l'évolution complexe du concept de gravité du siècle dernier, je propose une extension naturelle de la méthodologie des programmes de recherche que (...)
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  23. added 2020-04-15
    On the Notion of Existence.Piotr Witas - manuscript
    I argue that a slight shift in our understanding of the notion of existence is needed in order to cope with the problem of external world and the problem of mind and body. As a consequence of it being taught by "givenness" of the subjective mind, and despite its applicability in objective contexts, it should be considered a "tool" akin to qualia, rather than pertaining to a "true", objective reality. In plain language, one's supposed relation with their surroundings is known (...)
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  24. added 2020-04-09
    Fizica simplificată.Nicolae Sfetcu - 2014 - Drobeta Turnu Severin: MultiMedia Publishing.
    Ediţia a doua (revăzută şi îmbunătăţită) O introducere în teoriile şi conceptele, forţele fundamentale şi particule, metode şi tabele utilizate în fizică, subdomenii şi domenii ştiinţifice înrudite, cu accent pe înţelegerea fenomenelor fizice. Fizica clasică se ocupă, în general, cu materia și energia la scară normală de observație, în timp ce o mare parte a fizicii moderne se ocupă de comportamentul materiei și energiei în condiții extreme sau pe o scară foarte mare sau foarte mică. De exemplu, pentru fizica atomică (...)
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  25. added 2020-03-21
    Strong Field Gravitational Tests.Nicolae Sfetcu - manuscript
    When the density of the body becomes large enough, general relativity predicts the formation of a black hole. The neutron stars of about 1.4 solar masses and the black holes are the final stage for the evolution of the massive stars. Usually a black hole in a galaxy has played an important role in its formation and related cosmic structures. Such bodies provide an efficient mechanism for the emission of electromagnetic radiation and the formation of microquasars. Accretion can lead to (...)
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  26. added 2020-03-16
    Classic Gravitational Tests of Post-Einsteinian Theories.Nicolae Sfetcu - manuscript
    Albert Einstein proposed three tests of general relativity, later named the classic tests of general relativity, in 1916: the precession of the perihelion of Mercury's orbit, sun light deflection, and the gravitational redshift of the light. For gravitational testing, the indirect effects of gravity are always used, usually particles that are influenced by gravity. In the presence of gravity, the particles move along curved geodesic lines. The sources of gravity that cause the curvature of spacetime are material bodies, depending on (...)
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  27. added 2020-02-21
    Tests and Anomalies of Post-Newtonian Gravitational Theories.Nicolae Sfetcu - manuscript
    Usually, the "laboratory" of gravitational tests was the celestial bodies, the astrophysical systems. But such tests are disturbed by non-gravitational effects. The most used such "laboratory" was the solar system. Recently, scientists have focused on observing binary pulsars for the verification of gravitational theories, by observing the variations of the orbital period, thus providing indirect evidence for the emission of gravitational radiation. But the experimenter cannot "arrange the lab" according to his needs, nor trigger certain events when he needs them. (...)
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  28. added 2020-02-03
    The Ontic Probability Interpretation of Quantum Theory - Part II: Einstein's Incompleteness/Nonlocality Dilemma.Felix Alba-Juez - manuscript
    After pinpointing a conceptual confusion (TCC), a Reality preconception (TRP1), and a fallacious dichotomy (TFD), the famous EPR/EPRB argument for correlated ‘particles’ is studied in the light of the Ontic Probability Interpretation (TOPI) of Quantum Theory (QT). Another Reality preconception (TRP2) is identified, showing that EPR used and ignored QT predictions in a single paralogism. Employing TFD and TRP2, EPR unveiled a contradiction veiled in its premises. By removing nonlocality from QT’s Ontology by fiat, EPR preordained its incompleteness. The Petitio (...)
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  29. added 2020-01-30
    A Reinterpretation of the Cosmological Vacuum.Thomas Schürmann - manuscript
    In this paper, we make a proposal for addressing the cosmological constant problem. Our approach will be based on a reinterpretation of two non-standard de Sitter solutions given by the Einstein vacuum equations with Λ>0. As a first result, we derive an uncertainty principle for both variants of the de Sitter space (Theorem). Subsequently, a decomposition of the cosmological constant in a pair of time-dependent pieces is introduced (Corollary). The time-dependence of the corresponding energy and dark energy density is discussed (...)
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  30. added 2020-01-30
    On the Uncertainty Principle in Rindler and Friedmann Spacetimes.Thomas Schürmann - 2020 - European Physical Journal C 80.
    We revise the extended uncertainty relations for the Rindler and Friedmann spacetimes recently discussed by Dabrowski and Wagner in [9]. We reveal these results to be coordinate dependent expressions of the invariant uncertainty relations recently derived for general 3-dimensional spaces of constant curvature in [10]. Moreover, we show that the non-zero minimum standard deviations of the momentum in [9] are just artifacts caused by an unfavorable choice of coordinate systems which can be removed by standard arguments of geodesic completion.
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  31. added 2020-01-15
    How to Witness the Christian Faith in an Age of Immense Scientific Advancements.Moorad Alexanian - 2020 - God and Nature.
    We discuss the intellectual preparation necessary for a Christian student to reconcile his/her Christian faith with science. -/- .
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  32. added 2020-01-06
    Technical-Economic Aspects of the Use of Technological Process of Deforming Broaching.Sergii Sardak & S. Sardak Y. Nemyrovskyi, E. Posvyatenko - 2020 - In Vitalil Ivanov, Justyna Trojanowska, Jose Machado, Oleksandr Liaposhchenko, Jozef Zajac, Ivan Pavlenko, Milan Edl & Dragan Perakovic (eds.), Advances in Design, Simulation and Manufacturing II Proceedings of the 2nd International Conference on Design, Simulation, Manufacturing: The Innovation Exchange, DSMIE-2019, June 11-14, 2019, Lutsk, Ukraine. Springer. pp. 238-247.
    The article gives a definition of the technical and economic potential of the application of the deforming broaching process. Research of the consequences of introducing deforming broaching into technological processes at manufacturing enterprises is carried out on the basis of application of system resource and matrix approach. On the basis of the performed researches, a methodological basis for the economic evaluation of the results of applying deforming broaching on the pro-duction has been developed. The article has improved the well-known scientific (...)
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  33. added 2020-01-01
    Gravity and Gravitational Tests.Nicolae Sfetcu - manuscript
    Theories in science in general, and in physics in particular, are confirmed (temporarily) by experiments that verify the assertions and predictions of theories, thus laying the groundwork for scientific knowledge. Francis Bacon was the first to support the concept of a crucial experiment, which can decide the validity of a hypothesis or theory. Later, Newton argued that scientific theories are directly induced by experimental results and observations, excluding untested hypotheses. DOI: 10.13140/RG.2.2.33549.08167.
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  34. added 2019-10-31
    Golden Ratio Geometry and the Fine-Structure Constant.Michael A. Sherbon - 2019 - Journal of Advances in Physics 16 (1):362 -368.
    The golden ratio is found to be related to the fine-structure constant, which determines the strength of the electromagnetic interaction. The golden ratio and classical harmonic proportions with quartic equations give an approximate value for the inverse fine-structure constant the same as that discovered previously in the geometry of the hydrogen atom. With the former golden ratio results, relationships are also shown between the four fundamental forces of nature: electromagnetism, the weak force, the strong force, and the force of gravitation.
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  35. added 2019-09-23
    Why Is There Something, Rather Than Nothing?Sean M. Carroll - forthcoming - In Eleanor Knox & Alastair Wilson (eds.), Routledge Companion to the Philosophy of Physics.
    It seems natural to ask why the universe exists at all. Modern physics suggests that the universe can exist all by itself as a self-contained system, without anything external to create or sustain it. But there might not be an absolute answer to why it exists. I argue that any attempt to account for the existence of something rather than nothing must ultimately bottom out in a set of brute facts; the universe simply is, without ultimate cause or explanation.
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  36. 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 (...)
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  37. added 2019-08-28
    Concepts of Force in Spinoza's Psychology.Sergio Volodia Marcello Cremaschi - 1981 - Studia Leibnitiana. Supplementa 20:138-144.
    The paper discusses the role of the concepts of conatus, potentia, vis in Spinoza's project of a new science of the Galilean kind of the passions of the mind and of men’s way of living. I argue that he tries to work out a dynamic – as contrasted with kinematic – approach to psychology.
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  38. added 2019-08-18
    Gravitația.Nicolae Sfetcu - 2019 - Drobeta Turnu Severin: MultiMedia Publishing.
    Prezenta lucrare abordează gravitația din punctul de vedere al fizicii fenomenlogice cu accent pe testele gravitaționale, al epistemologiei și metodologiei utilizate de oamenii de știință, și al ontologiei gravitației, spațiului și timpului. Gravitația are un caracter universal, dar puterea sa scade rapid cu distanța, fiind cea mai slabă dintre cele patru forțe fundamentale ale fizicii. După descrierea gravitației de către Newton ca forță, relativitatea generală consideră că gravitația este o consecință a curburii spațiu-timpului datorită distribuției maselor. Conform teoriei actuale principale, (...)
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  39. added 2019-07-23
    Remarks on Mӧller Mistaken Famous Paper From 1943.Jaykov Foukzon - manuscript
    Einstein field equations was originally derived by Einstein in 1915 in respect with canonical formalism of Riemann geometry,i.e. by using the classical sufficiently smooth metric tensor, smooth Riemann curvature tensor, smooth Ricci tensor,smooth scalar curvature, etc.. However have soon been found singular solutions of the Einstein field equations with degenerate and singular metric tensor and singular Riemann curvature tensor. These degenerate and singular solutions of the Einstein field equations was formally accepted by main part of scientific community beyond rigorous canonical (...)
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  40. added 2019-07-23
    Schrödinger’s Cat Paradox Resolution Using GRW Collapse Model: Von Neumann Measurement Postulate Revisited.Jaykov Foukzon - 2017 - Journal of Applied Mathematics and Physics 5 (2):494-521.
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  41. added 2019-07-21
    Sunetul fizicii - Acustica fenomenologică.Nicolae Sfetcu - 2018 - Drobeta Turnu Severin: MultiMedia Publishing.
    Explorați lumea sunetelor - cum se generează, se propagă, se percep și se înregistrează sunetele, în natură și în activitatea umană. Informații utile, la nivel fenomenologic, despre vibrații și unde, acustică, și sunete muzicale: caracteristici, descrieri fizice, fenomene specifice. Despre muzică și acustica instrumentelor muzicale. -/- CUPRINS: -/- Vibrații și unde - Pendul - Unde - - Exemple de unde - - Caracteristici generale - - Descriere fizică - - - Unde de deplasare - Unde mecanice - - Unde transversale (...)
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  42. added 2019-07-17
    From McTaggert to AdS_5 Geometry.Paul Merriam - manuscript
    The purpose of this note is to show how an 'AB-series' interpretation of time, given in a companion paper, leads, surprisingly, directly to the physicists' important AdS5 geometry. This is not a theory of 2 time dimensions. Rather, it is a theory of 1 time dimension that has both B-series and A-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, (...)
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  43. added 2019-07-13
    Was Polchinski Wrong? Colombeau Distributional Rindler Space-Time with Distributional Levi-Cività Connection Induced Vacuum Dominance. Unruh Effect Revisited.Jaykov Foukzon - 2018 - Journal of High Energy Physics, Gravitation and Cosmology 2 (4):361-440.
    The vacuum energy density of free scalar quantum field Φ in a Rindler distributional space-time with distributional Levi-Cività connection is considered. It has been widely believed that, except in very extreme situations, the influence of acceleration on quantum fields should amount to just small, sub-dominant contributions. Here we argue that this belief is wrong by showing that in a Rindler distributional background space-time with distributional Levi-Cività connection the vacuum energy of free quantum fields is forced, by the very same background (...)
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  44. added 2019-07-12
    The Solution Cosmological Constant Problem.Jaykov Foukzon - 2019 - Journal of Modern Physics 10 (7):729-794.
    The cosmological constant problem arises because the magnitude of vacuum energy density predicted by the Quantum Field Theory is about 120 orders of magnitude larger then the value implied by cosmological observations of accelerating cosmic expansion. We pointed out that the fractal nature of the quantum space-time with negative Hausdorff-Colombeau dimensions can resolve this tension. The canonical Quantum Field Theory is widely believed to break down at some fundamental high-energy cutoff ∗ Λ and therefore the quantum fluctuations in the vacuum (...)
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  45. added 2019-07-12
    Unruh Effect Revisited.Jaykov Foukzon - 2018 - Journal of Physics: Conference Series 1141 (1).
    The vacuum energy density of free scalar quantum field phgr in a Rindler distributional space-time with distributional Levi-Cività connection is considered. It has been widely believed that, except in very extreme situations, the influence of acceleration on quantum fields should amount to just small, sub-dominant contributions. Here we argue that this belief is wrong by showing that in a Rindler distributional background space-time with distributional Levi-Cività connection the vacuum energy of free quantum fields is forced, by the very same background (...)
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  46. added 2019-07-11
    Gravitational Singularities.Nicolae Sfetcu - manuscript
    Gravitational singularities in general relativity are spacetime locations where the gravitational field becomes infinite. Scalar invariant curves of spacetime include a measure of matter density. Some physicists and philosophers believe that because the density of matter tends to become infinite in singularity, spacetime laws are no longer valid there. A gravitational singularity almost universally accepted in astrophysics and cosmology as the earliest state of the universe, is the Big Bang. In this case also, the known laws of physics are no (...)
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  47. added 2019-07-07
    Lucretius and the History of Science.Monte Ransome Johnson & Catherine Wilson - 2007 - In Stuart Gillespie & Philip R. Hardie (eds.), The Cambridge Companion to Lucretius. Cambridge University Press.
    An overview of the influence of Lucretius poem On the Nature of Things (De Rerum Natura) on the renaissance and scientific revolution of the seventeenth century, and an examination of its continuing influence over physical atomism in the nineteenth and twentieth centuries.
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  48. added 2019-06-26
    An Attempt to Prove Physics by Making Reality Indubitable.Alexandre Harvey Tremblay - manuscript
    In this manuscript I attempt to produce the most fundamental description of physics and reality I believe to be possible. Specifically, using algorithmic information theory, statistical physics and entropy as my tools, my strategy is to define reality as the ensemble of all realized experiments (the ensemble of what "I" has indubitably proven), the domain of science as the set of all realizable experiments (the set of what "I" could prove) and finally nature as the group of all possible transformations (...)
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  49. added 2019-06-22
    Azeredo Coutinho e a física do voo controlado de balões.José Carlos Corrêa de Andrades, Adriano Martins Moutinho & José Fernandes Pereira - 2019 - Revista Brasileira de Ensino de Física 41 (4):e20180310.
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  50. added 2019-06-05
    Popular Arguments for Einstein’s Special Theory of Relativity.Patrick Mackenzie - manuscript
    In this paper I shall argue in Section II that two of the standard arguments that have been put forth in support of Einstein’s Special Theory of Relativity do not support that theory and are quite compatible with what might be called an updated and perhaps even an enlightened Newtonian view of the Universe. This view will be presented in Section I. I shall call it the neo-Newtonian Theory, though I hasten to add there are a number of things in (...)
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