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Publisher: AIP   (Total: 27 journals)   [Sort by number of followers]

Showing 1 - 27 of 27 Journals sorted alphabetically
Acoustics Today     Hybrid Journal   (Followers: 8)
AIP Advances     Open Access   (Followers: 11, SJR: 0.472, CiteScore: 1)
AIP Conference Proceedings     Full-text available via subscription   (Followers: 4)
American J. of Physics     Full-text available via subscription   (Followers: 54, SJR: 0.456, CiteScore: 1)
APL Bioengineering     Open Access  
APL Materials     Open Access   (Followers: 14, SJR: 1.63, CiteScore: 4)
APL Photonics     Open Access   (Followers: 1)
Applied Physics Letters     Hybrid Journal   (Followers: 38, SJR: 1.382, CiteScore: 3)
Applied Physics Reviews     Hybrid Journal   (Followers: 10, SJR: 4.156, CiteScore: 12)
Biointerphases     Open Access   (Followers: 1, SJR: 0.558, CiteScore: 2)
Biomicrofluidics     Open Access   (Followers: 5, SJR: 0.592, CiteScore: 2)
Chaos : An Interdisciplinary J. of Nonlinear Science     Hybrid Journal   (Followers: 3, SJR: 0.716, CiteScore: 2)
Chinese J. of Chemical Physics     Hybrid Journal   (Followers: 1, SJR: 0.24, CiteScore: 1)
J. of Applied Physics     Hybrid Journal   (Followers: 79, SJR: 0.739, CiteScore: 2)
J. of Chemical Physics     Hybrid Journal   (Followers: 31, SJR: 1.252, CiteScore: 2)
J. of Laser Applications     Full-text available via subscription   (Followers: 13, SJR: 0.741, CiteScore: 2)
J. of Mathematical Physics     Hybrid Journal   (Followers: 23, SJR: 0.644, CiteScore: 1)
J. of Physical and Chemical Reference Data     Hybrid Journal   (Followers: 3, SJR: 1.046, CiteScore: 3)
J. of Renewable and Sustainable Energy     Hybrid Journal   (Followers: 14, SJR: 0.44, CiteScore: 1)
Low Temperature Physics     Hybrid Journal   (Followers: 5, SJR: 0.264, CiteScore: 1)
Physics of Fluids     Hybrid Journal   (Followers: 37, SJR: 1.19, CiteScore: 3)
Physics of Plasmas     Hybrid Journal   (Followers: 8, SJR: 0.576, CiteScore: 1)
Physics Today     Hybrid Journal   (Followers: 80, SJR: 0.66, CiteScore: 1)
Review of Scientific Instruments     Hybrid Journal   (Followers: 20, SJR: 0.585, CiteScore: 1)
Scilight     Full-text available via subscription  
Structural Dynamics     Open Access   (Followers: 5, SJR: 1.625, CiteScore: 4)
Surface Science Spectra     Hybrid Journal   (Followers: 1, SJR: 0.416, CiteScore: 1)
Journal Cover
American Journal of Physics
Journal Prestige (SJR): 0.456
Citation Impact (citeScore): 1
Number of Followers: 54  
  Full-text available via subscription Subscription journal
ISSN (Print) 0002-9505 - ISSN (Online) 1943-2909
Published by AIP Homepage  [27 journals]
  • Stability of planetary systems: A numerical didactic approach
    • Authors: Renato Pakter, Yan Levin
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 69-74, January 2019.
      We discuss the numerical methods needed to study the dynamics of interacting planetary systems. We argue that the most appropriate method for studying the many-body dynamics is Runge-Kutta with an adaptive step size. We demonstrate that planetary systems are highly susceptible to catastrophic events in which collisions between the planets are almost unavoidable. We then discuss a recently proposed mechanism that explains how planetary systems may have spontaneously evolved into a self-organized periodic state in which catastrophic events are avoided.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:37Z
      DOI: 10.1119/1.5079541
  • Laboratory demonstration of acoustic source localization in two dimensions
    • Authors: Frank Lamelas, Sudha Swaminathan
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 24-27, January 2019.
      A high-resolution table-top experiment in source localization is carried out using four USB microphones. We show that the acoustic source location can be determined with an accuracy of 1 cm if timing measurements are carried out as follows. First, the sound source is a noise pulse played through a cell-phone speaker, ensuring the presence of high-frequency components and an easily identified abrupt onset of the sound signal. Second, we normalize the clock rates of the four computers used with the microphones. The position of the source is calculated using an analytical expression which depends on the microphone layout and the arrival times of the sound signal at the four microphones. The experiment can be carried out in an undergraduate laboratory.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:36Z
      DOI: 10.1119/1.5078510
  • Reliable determination of contact angle from the height and volume of
           sessile drops
    • Authors: F. Behroozi, P. S. Behroozi
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 28-32, January 2019.
      Contact angle is an important parameter in characterizing the wetting properties of fluids. For this reason, accurate measurement of the contact angle at liquid-solid interfaces is of great importance in industrial and scientific applications. The most common method for measuring the contact angle is to obtain it directly from the profile of a sessile drop. Though convenient, this method suffers from certain inherent drawbacks. Here, we describe an alternative method that uses the height and volume of a sessile drop as constraints to construct its profile by numerical integration of two parametric differential equations. The integration yields, self consistently, the average value of the contact angle along the entire contact line as well as the footprint radius of the drop and its crown radius of curvature. As a test case, the new method is used to obtain the contact angle of pure water on two different substrates, Teflon and Lucite. For each substrate, four drops ranging in volume from 10. to 40 [math] are used. The computed contact angles are consistent across the four different drop sizes for each substrate and are in good agreement with the literature values.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:34Z
      DOI: 10.1119/1.5078512
  • Flying in formation: The orbital dynamics of LISA's three spacecraft
    • Authors: Joseph C. Amato
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 18-23, January 2019.
      LISA is a space-based gravitational wave observatory that is anticipated to launch in 2034. Its constellation of three spacecraft will be located at the vertices of an equilateral triangle that will follow the Earth about the Sun. The spacecraft will be deployed in three heliocentric elliptical orbits that, to first order in their eccentricity, maintain the observatory's size and configuration. How LISA accomplishes this is an ideal illustration of basic orbital dynamics. The physics underlying the choice of orbits is explained at a level suitable for introductory undergraduate physics students.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:33Z
      DOI: 10.1119/1.5075722
  • The Fluidyne engine
    • Authors: Alejandro Romanelli
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 33-37, January 2019.
      The Fluidyne is a two-part hot-air engine which has the peculiarity that both its power piston and displacer are liquids. Both parts operate in tandem with the common working gas (air) transferring energy from the displacer to the piston side, from which work is extracted. We describe analytically the thermodynamics of the Fluidyne engine using the approach previously developed for the Stirling engine. We obtain explicit expressions for the amplitude of the power piston movement and for the working gas temperatures and pressure as functions of the engine parameters. We also study numerically the power and efficiency of the engine in terms of the phase shift between the motions of the piston and displacer.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:33Z
      DOI: 10.1119/1.5078518
  • The Age of Innocence: Nuclear Physics Between the First and Second World
    • Abstract: American Journal of Physics, Volume 87, Issue 1, Page 78-79, January 2019.

      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:31Z
      DOI: 10.1119/1.5075721
  • Taking teachers' ideas seriously: Exploring the role of physics faculty in
           preparing teachers in the era of the Next Generation Science Standards
    • Authors: Amy D. Robertson, Lane Seeley, Orlala T. Wentink, Stamatis Vokos
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 57-68, January 2019.
      The Next Generation Science Standards (NGSS) call for K-12 science instruction that centers on and substantively takes up students' science ideas. In this paper, we explore the question, “What role might physics faculties play in preparing teachers in the era of NGSS',” as we also consider our field's adage that “most teachers tend to teach as they were taught.” In particular, we propose the importance of teacher education experiences that take teachers' own physics ideas seriously. We argue that physicists can play a critical role in this work by designing and facilitating teacher preparation and professional development that (1) elevates and maintains a focus on teachers' physics ideas and (2) collaboratively subjects teachers' ideas to the kinds of tests to which we subject our own ideas. We ground these considerations in two illustrative episodes from our local context: Focus on Energy professional development for elementary teachers. We highlight particular professional development instructor moves that take teachers' ideas seriously, and we discuss questions and implications that emerge from our analysis. Although the focus of our analysis is on taking teachers' ideas seriously, we suggest that most of our arguments also apply to taking students' ideas seriously in pre-college and university physics courses.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:29Z
      DOI: 10.1119/1.5082286
  • Observation of the Talbot effect with water waves
    • Authors: Alexandra Bakman, Shmuel Fishman, Mathias Fink, Emmanuel Fort, Sander Wildeman
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 38-43, January 2019.
      When light is incident upon a diffraction grating, images of the grating appear at periodic intervals behind the grating. This phenomenon and the associated self-imaging distance were named after Talbot, who first observed them in the nineteenth century. A century later, this effect held new surprises with the discovery of sub-images at regular fractional distances of the Talbot length. In this paper, we show that water waves enable one to observe the Talbot effect in a classroom experiment. Quantitative measurements, of for example the Talbot distances, can be performed with an easy-to-use digital Schlieren method.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:28Z
      DOI: 10.1119/1.5081051
  • Don't demean the geometric mean
    • Authors: Sanjoy Mahajan
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 75-77, January 2019.

      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:27Z
      DOI: 10.1119/1.5082281
    • Abstract: American Journal of Physics, Volume 87, Issue 1, Page 79-80, January 2019.

      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:26Z
      DOI: 10.1119/1.5082182
  • Analytical solution of gravity tunnels through an inhomogeneous Earth
    • Authors: Stefan Isermann
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 10-17, January 2019.
      A piecewise linear approximation of the Preliminary reference Earth model (PREM) is used for the Earth's velocity profile. The analytical solution derived for the motion on the shortest path and the path of fastest descent corresponds to the direct numerical integration of the PREM. This explains why traversal times can be approximated by the assumption of constant gravity, while the gravity of the Earth is certainly not constant.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:25Z
      DOI: 10.1119/1.5075717
  • LIGO analogy lab—A set of undergraduate lab experiments to demonstrate
           some principles of gravitational wave detection
    • Authors: Dennis Ugolini, Hanna Rafferty, Max Winter, Carsten Rockstuhl, Antje Bergmann
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 44-56, January 2019.
      The first direct detection of gravitational waves by the Laser Interferometer Gravitational-Wave Observatory (LIGO) in September 2015 proved their existence, as predicted by Einstein's General Theory of Relativity, and ushered in the era of gravitational-wave interferometry. In this article, we present a set of lab course experiments at different levels of advancement, which give students insight into the basic LIGO operating principle and advanced detection techniques. Starting with methods for folding an optical cavity, we advance to analogy experiments with sound waves that can be detected with a Michelson interferometer with an optical cavity arm. In that experiment, students also learn how the sensitivity of the device can be tuned. In a last step, we show how optical heterodyne detection (the mixing of a signal with a reference oscillator) was used in Initial LIGO. We hope these experiments not only give students an understanding of some LIGO techniques but also awaken a fascination for how unimaginably tiny signals, created by powerful cosmic events a billion years ago or earlier, can be detected today here on Earth.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:24Z
      DOI: 10.1119/1.5066567
  • Comoving frames and the Lorentz–Fitzgerald contraction
    • Authors: Alon Drory
      Abstract: American Journal of Physics, Volume 87, Issue 1, Page 5-9, January 2019.
      In special relativity, accelerated objects are described through instantaneous comoving frames, to which the usual transformations are then applied. This is not always possible, however. I analyze a simple example of a rod thrown from a train onto a stationary platform. The lack of absolute simultaneity implies that the rod stretches, and its points move with respect to each other. Its length, therefore, changes. Typically, the rod as a whole has no instantaneous rest length and thus no definable proper length. A fortiori, it has no instantaneous rest frame, and the (instantaneous) Lorentz contraction formula is inapplicable.
      Citation: American Journal of Physics
      PubDate: 2018-12-21T06:20:23Z
      DOI: 10.1119/1.5082535
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