Journal articles on the topic 'Physics of time'

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1

Jacyna-Onyszkiewicz, Zbigniew. "Physics of Time." Dialogue and Universalism 18, no. 9 (2008): 39–54. http://dx.doi.org/10.5840/du2008189/1025.

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2

Arodź, Henryk, and Maria Massalska-Arodź. "Physics of Time." Dialogue and Universalism 18, no. 9 (2008): 55–69. http://dx.doi.org/10.5840/du2008189/1026.

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3

Sodré, Fernanda, and Cristiano Mattos. "Preservice Physics Teachers’ Conceptual Profile of Time." International Journal of Research in Education and Science 8, no. 2 (May 22, 2022): 451–70. http://dx.doi.org/10.46328/ijres.2788.

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Time is a concept of historical, social, cultural, philosophical, artistic, economic, technological, scientific relevance. Time assumes different meanings in the Sciences, especially in Physics, acquiring fundamental importance in different physical contexts. However, in both high school and college Physics courses in Brazil, time is usually treated as an abstract mathematical parameter to the detriment of recognizing its different meanings, domains of validity, and historicity concerning its genesis. Such treatment of the concept of time leads us to believe that these more particular notions would probably be present in the conceptions within the complex conceptual profile of future Physics teachers in training. We interviewed preservice physics teachers to investigate this hypothesis in physics teacher education. To categorize students’ conceptual profile zones, we developed the Concept Polysemy Organization Matrix (POM) based on the dimensions of the complex conceptual profile model and the genetic scales of Vygotsky. As a result, we start to structure future Physics teachers’ conceptual profile of time, identifying a myriad of meanings of time through POM. Beyond that, we verified that future physics teachers’ dominant meaning of time is numerical since their main formation activity in physics teacher education reinforces abstract mathematical-physical problem-solving.
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4

Cortes, M., and L. Smolin. "Physics, Time, and Qualia." Journal of Consciousness Studies 28, no. 9 (January 1, 2021): 36–51. http://dx.doi.org/10.53765/20512201.28.9.036.

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We suggest that four of the deepest problems in science are closely related and may share a common resolution. These are (1) the foundational problems in quantum theory, (2) the problem of quantum gravity, (3) the role of qualia and conscious awareness in nature, (4) the nature of time. We begin by proposing an answer to the question of what a quantum event is: an event is a process in which an aspect of the world which has been indefinite becomes definite. We build from this an architecture of the world in which qualia are real and consequential and time is active, fundamental, and irreversible.
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5

Farmelo, Graham. "Physics: Fighting for time." Nature 521, no. 7552 (May 2015): 286–87. http://dx.doi.org/10.1038/521286a.

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6

Crease, Robert P. "Just-in-time physics." Physics World 26, no. 08 (August 2013): 19. http://dx.doi.org/10.1088/2058-7058/26/08/26.

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7

Jaffe, Andrew. "Physics: Finding the time." Nature 537, no. 7622 (September 2016): 616. http://dx.doi.org/10.1038/537616a.

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8

Neubert, Alex C. "A physics time line." Physics Teacher 26, no. 3 (March 1988): 165. http://dx.doi.org/10.1119/1.2342467.

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9

Bohm, A. "Time-asymmetric quantum physics." Physical Review A 60, no. 2 (August 1, 1999): 861–76. http://dx.doi.org/10.1103/physreva.60.861.

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10

Ashtekar, Abhay. "Time in fundamental physics." Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 52 (November 2015): 69–74. http://dx.doi.org/10.1016/j.shpsb.2014.08.006.

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11

Senatore, Gennaro, and Daniel Piker. "Interactive real-time physics." Computer-Aided Design 61 (April 2015): 32–41. http://dx.doi.org/10.1016/j.cad.2014.02.007.

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12

Englert, F. "Quantum physics without time." Physics Letters B 228, no. 1 (September 1989): 111–14. http://dx.doi.org/10.1016/0370-2693(89)90534-0.

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13

Dolev, Yuval. "Physics’ silence on time." European Journal for Philosophy of Science 8, no. 3 (January 9, 2018): 455–69. http://dx.doi.org/10.1007/s13194-017-0195-z.

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14

SHANKS, NIALL. "TIME, PHYSICS AND FREEDOM." Metaphilosophy 25, no. 1 (January 1994): 45–59. http://dx.doi.org/10.1111/j.1467-9973.1994.tb00467.x.

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15

Korsunsky, Boris. "Physics Back in TIME." Physics Teacher 52, no. 3 (March 2014): 140–41. http://dx.doi.org/10.1119/1.4865513.

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16

Lewenstein, M. "PHYSICS: Resolving Physical Processes on the Attosecond Time Scale." Science 297, no. 5584 (August 16, 2002): 1131–32. http://dx.doi.org/10.1126/science.1075873.

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17

Yavoruk, Oleg. "The Study of Time Perception in Physics Classes." KronoScope 21, no. 1 (June 25, 2021): 45–57. http://dx.doi.org/10.1163/15685241-12341487.

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Abstract This paper describes interdisciplinary, practical work in physics classes aimed at the study of time perception. The experimental part includes the evaluation of minute intervals by a person who relies on an internal sense of time. This lab is done in pairs: the experimenter and the tested person. The paper suggests that certain topical, interdisciplinary issues – issues typically excluded from physics and psychology courses – are a means toward interaction of two radically different branches of knowledge (physics and psychology) within the educational process. Such use of interdisciplinarity increases both the students’ interest in physics and the quality of physics education. The paper also summarizes and offers for dispute some additional results (quantitative data) about types of time perception. Most students (over 250) demonstrate underestimation and overestimation of time intervals: tachychronia (“accelerated” time sense) and bradychronia (“decelerated” time sense).
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18

LÄMMERZAHL, CLAUS, and HANSJÖRG DITTUS. "TIME, CLOCKS AND FUNDAMENTAL PHYSICS." International Journal of Modern Physics D 16, no. 12b (December 2007): 2455–67. http://dx.doi.org/10.1142/s0218271807011504.

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Time is the most basic notion in physics. Correspondingly, clocks are the most basic tool for the exploration of physical laws. We show that most of the fundamental physical principles and laws valid in today's description of physical phenomena are related to clocks. Clocks are an almost universal tool for exploring the fundamental structure of theories related to relativity. We describe this structure and give examples where violations of standard physics are predicted and, thus, may be important in the search for a theory of quantum gravity. After stressing the importance for future precise clock experiments to be performed in space, we refer to the OPTIS mission, to which another article in this issue is devoted. It is also outlined that clocks are not only important for fundamental tests but at the same time are also indispensable for practical purposes like navigation, Earth sciences, metrology, etc.
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19

Sadatian, Seyed Davood. "Is Time Inhomogeneous?" International Letters of Chemistry, Physics and Astronomy 32 (April 2014): 155–59. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.32.155.

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In this article, we discuss probability of inhomogeneous time in high or low energy scale of physics. Consequently, the possibility was investigated of using theories such as varying speed of light (VSL) and fractal mathematics to build a framework within which answers can be found to some of standard cosmological problems and physics theories on the basis of time non-homogeneity.
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20

Sadatian, Seyed Davood. "Is Time Inhomogeneous?" International Letters of Chemistry, Physics and Astronomy 32 (April 22, 2014): 155–59. http://dx.doi.org/10.56431/p-3l11ns.

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In this article, we discuss probability of inhomogeneous time in high or low energy scale of physics. Consequently, the possibility was investigated of using theories such as varying speed of light (VSL) and fractal mathematics to build a framework within which answers can be found to some of standard cosmological problems and physics theories on the basis of time non-homogeneity.
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21

Costa de Beauregard, Olivier. "Time in relativistic quanfum physics." Enrahonar. Quaderns de filosofia 15 (March 1, 1989): 61. http://dx.doi.org/10.5565/rev/enrahonar.765.

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22

Góźdź, A., K. Rybak, A. Pędrak, and M. Góźdź. "Quantum Time in Nuclear Physics." Acta Physica Polonica B Proceedings Supplement 8, no. 3 (2015): 591. http://dx.doi.org/10.5506/aphyspolbsupp.8.591.

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23

Simon, Jonathan Z. "The physics of time travel." Physics World 7, no. 12 (December 1994): 27–34. http://dx.doi.org/10.1088/2058-7058/7/12/27.

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24

Di Stefano, Rosanne. "Physics teaching and time management." Physics Teacher 36, no. 6 (September 1998): 350–54. http://dx.doi.org/10.1119/1.880107.

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25

Bars, Itzhak. "Survey of two-time physics." Classical and Quantum Gravity 18, no. 16 (August 2, 2001): 3113–30. http://dx.doi.org/10.1088/0264-9381/18/16/303.

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26

Sachs, Robert G., and Sam Treiman. "The Physics of Time Reversal." American Journal of Physics 56, no. 7 (July 1988): 669–70. http://dx.doi.org/10.1119/1.15494.

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27

Arntzenius, Frank, and Tim Maudlin. "Time Travel and Modern Physics." Royal Institute of Philosophy Supplement 50 (March 2002): 169–200. http://dx.doi.org/10.1017/s1358246100010560.

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Time travel has been a staple of science fiction. With the advent of general relativity it has been entertained by serious physicists. But, especially in the philosophy literature, there have been arguments that time travel is inherently paradoxical. The most famous paradox is the grandfather paradox: you travel back in time and kill your grandfather, thereby preventing your own existence. To avoid inconsistency some circumstance will have to occur which makes you fail in this attempt to kill your grandfather. Doesn't this require some implausible constraint on otherwise unrelated circumstances? We examine such worries in the context of modern physics.
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28

Balachandran, A. P., and L. Chandar. "Discrete time from quantum physics." Nuclear Physics B 428, no. 1-2 (October 1994): 435–48. http://dx.doi.org/10.1016/0550-3213(94)90207-0.

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29

Ball, Philip. "Physics at the Planck time." Nature 402, S6761 (December 1999): C61. http://dx.doi.org/10.1038/35011550.

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30

Néda, Zoltán. "The Space-time of Physics: a Kinetic Space." Hungarian Studies Yearbook 1, no. 1 (December 1, 2019): 10–24. http://dx.doi.org/10.2478/hsy-2019-0002.

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Abstract In his article “The Space-time of Physics: a Kinetic Space” Zoltán Néda reveals why is there a lot of confusion concerning the space-time of modern physics. These concepts are used routinely, but if we dig in deeply, finally we have to recognize that usually our knowledge is rather superficial and limited. The logic on which space and time is constructed in physics is an interesting and enlightening story, in which light plays an import role. The space-time of physics is tailored on light, it is built by using the propagation properties of light rays. In such view, it is a kinetic space. The author presents the logic of this construction in a concise and non-technical manner, so that readers without any mathematical background can also enjoy it.
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31

Yasmineh, Salim. "Simultaneity and Time Reversal in Quantum Mechanics in Relation to Proper Time." Quantum Reports 4, no. 3 (September 8, 2022): 324–37. http://dx.doi.org/10.3390/quantum4030023.

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In Newtonian physics, the equation of motion is invariant when the direction of time () is flipped. However, in quantum physics, flipping the direction of time changes the sign of the Schrödinger equation. An anti-unitary operator is needed to restore time reversal in quantum physics, but this is at the cost of not having a consistent definition of time reversal applicable to all fundamental theories. On the other hand, a quantum system composed of a pair of entangled particles behaves in such a manner that when the state of one particle is measured, the second particle ‘simultaneously’ acquires a determinate state. A notion of absolute simultaneity seems to be inferred by quantum mechanics, even though it is forbidden by the postulates of relativity. We aim to point out that the above two problems can be overcome if the wavefunction is defined with respect to proper time, which in fact is the real physical time instead of ordinary time.
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32

Prygin, G. S. "CONSCIOUSNESS AND TIME. IS SUBJECTIVE TIME OBJECTIVE?" Bulletin of Udmurt University. Series Philosophy. Psychology. Pedagogy 29, no. 2 (June 25, 2019): 177–88. http://dx.doi.org/10.35634/2412-9550-2019-29-2-177-188.

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We study the problems of time consciousness from the standpoint of philosophy, physics and psychology; it is argued that such a sequence in the analysis of the problem allows us to reveal the actual psychological aspect of the problem of the objectivity of the consciousness of time, which is the goal of the study. Both the philosophical concepts of the time consciousness of I. Kant, E. Husserl and F. Brentano, and the physical theories of the study of time (quantum physics, cosmology, the physics of non-equilibrium processes) are analyzed. It has been established that in philosophical theories, the concepts: consciousness, memory, perception, representation, and others do not have clear definitions and can change their meaning depending on the context. It is emphasized that in physical and human sciences time is investigated, as a rule, in connection with the concept of “space”. It is shown that when analyzing the problem of the consciousness of time, one should first decide on the concept of “reality”, which allows us to remove contradictions in the understanding of time in various physical theories. It is concluded that the existence of both objective and subjective time can only be spoken when we operate with concepts; outside of this the concept of “time” has meaning only when a person is considered as part of society. It is shown that in relation to the collective and personal unconscious, the temporal modes of the "past", "present" and "future" do not make sense, since "the whole diversity of everything" is represented in the unconscious field simultaneously and extra-spatially.
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33

Olsen, Jan-Kyrre Berg. "Metaphysics and Time." Forum Philosophicum 13, no. 2 (November 1, 2008): 367–82. http://dx.doi.org/10.35765/forphil.2008.1302.27.

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The leap from primitive to scientific time represented as the “time” in “relativity physics,” or in “thermodynamics” or perhaps in “quantum physics” or even within “statistical mechanics” is large. Large also is the conceptual difference between these various understandings of the nature of time. How are we really to understand these physical perspectives on time: As knowledge about the real nature of time represented by the objective concepts: Or as epistemological-operational abstractions that cannot avoid elevating their results to the level of full-fledged reality, to ontology?
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34

Peterson, Daniel. "Do Time-Asymmetric Laws call for Time-Asymmetric Spacetime Structure?" Disputatio 9, no. 44 (May 1, 2017): 75–98. http://dx.doi.org/10.2478/disp-2017-0028.

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Abstract Many philosophers of physics take the failure of the laws of physics to be invariant under the time reversal transformation to give us good reason to think that spacetime is temporally anisotropic, yet the details of this inference are rarely made explicit. I discuss two reasonable ways of filling in the details of this inference, the first of which utilizes a symmetry principle proposed by John Earman and the second of which utilizes Harvey Brown’s account of spacetime. I contend that neither of the resulting arguments is sound.
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35

Sung, Ma, Choi, and Hong. "Real-Time Augmented Reality Physics Simulator for Education." Applied Sciences 9, no. 19 (September 25, 2019): 4019. http://dx.doi.org/10.3390/app9194019.

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Physics education applications using augmented reality technology, which has been developed extensively in recent years, have a lot of restrictions in terms of performance and accuracy. The purpose of our research is to develop a real-time simulation system for physics education that is based on parallel processing. In this paper, we present a video see-through AR (Augmented Reality) system that includes an environment recognizer using a depth image of Microsoft’s Kinect V2 and a real-time soft body simulator based on parallel processing using GPU (Graphic Processing Unit). Soft body simulation can provide more realistic simulation results than rigid body simulation, so it can be more effective in systems for physics education. We have designed and implemented a system that provides the physical deformation and movement of 3D volumetric objects, and uses them in education. To verify the usefulness of the proposed system, we conducted a questionnaire survey of 10 students majoring in physics education. As a result of the questionnaire survey, 93% of respondents answered that they would like to use it for education. We plan to use the stand-alone AR device including one or more cameras to improve the system in the future.
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36

Yadav, Garima. "The Arrow of Time: Can Time be Reversed?" International Journal of Multidisciplinary Research and Analysis 04, no. 05 (May 24, 2021). http://dx.doi.org/10.47191/ijmra/v4-i5-20.

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In the year 1928, Arthur Eddington, a British physicist, first introduced the word “time’s arrow” to physics. He believed that the arrow of time is vividly recognized by consciousness and insisted that the reversal of this arrow would render the physical world nonsensical. It is widely known that the laws of physics remain unchanged under the combination C, P, and T and that the laws of physics do not change with the flow of time but that is not the case under the operation T alone. This paper focuses on mainly three arrows of time, the thermodynamic arrow of time, the psychological arrow of time and the cosmological arrow of time and discusses the reversal of the arrow of time and its implications.
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37

Pittman, Todd. "It’s a Good Time for Time-Bin Qubits." Physics 6 (October 9, 2013). http://dx.doi.org/10.1103/physics.6.110.

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38

Zakrzewski, Jakub. "Crystals of Time." Physics 5 (October 15, 2012). http://dx.doi.org/10.1103/physics.5.116.

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39

Calonico, Davide. "Keeping Time with Light." Physics 12 (October 21, 2019). http://dx.doi.org/10.1103/physics.12.114.

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40

Ball, Philip. "Cosmic-Ray Time Capsules." Physics 13 (November 30, 2020). http://dx.doi.org/10.1103/physics.13.186.

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41

Wright, Katherine. "Turning Back Time on Space." Physics 15 (May 19, 2022). http://dx.doi.org/10.1103/physics.15.75.

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42

Gong, Zongping, and Masahito Ueda. "Time Crystals in Open Systems." Physics 14 (July 19, 2021). http://dx.doi.org/10.1103/physics.14.104.

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43

Jun, Suckjoon, and Nick Rhind. "Just-in-time DNA replication." Physics 1 (October 27, 2008). http://dx.doi.org/10.1103/physics.1.32.

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44

Safronova, Marianna. "Time Trials for Fundamental Constants." Physics 7 (November 17, 2014). http://dx.doi.org/10.1103/physics.7.117.

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45

Anonymous. "Time Crystals Multiply." Physics 11 (May 1, 2018). http://dx.doi.org/10.1103/physics.11.s51.

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46

Anonymous. "Time-saving steps." Physics 3 (September 27, 2010). http://dx.doi.org/10.1103/physics.3.s133.

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47

Anonymous. "Solar Down Time." Physics 5 (October 25, 2012). http://dx.doi.org/10.1103/physics.5.s163.

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48

Wright, Katherine. "A Rockin’ Time for Space Missions." Physics 14 (April 12, 2021). http://dx.doi.org/10.1103/physics.14.55.

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49

Richerme, Phil. "How to Create a Time Crystal." Physics 10 (January 18, 2017). http://dx.doi.org/10.1103/physics.10.5.

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50

Short, Anthony J. "The Thermodynamic Cost of Measuring Time." Physics 10 (August 2, 2017). http://dx.doi.org/10.1103/physics.10.88.

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