American Journal of Physics: Most Cited articles
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Most cited articles from American Journal of Physicsen-usWed, 01 Dec 2021 12:31:25 GMTAtypon® Literatum™http://validator.w3.org/feed/docs/rss2.html10080American Journal of Physics: Most Cited articleshttps://aapt.scitation.org/na101/home/literatum/publisher/aip/journals/content/ajp/2021/ajp.2021.89.issue-12/ajp.2021.89.issue-12/20211122/ajp.2021.89.issue-12.cover.jpg
https://aapt.scitation.org/feed/ajp/most-cited
Life at low Reynolds number
https://aapt.scitation.org/doi/10.1119/1.10903?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.10903?feed=most-citedEditor’s note: This is a reprint (slightly edited) of a paper of the same title that appeared in the book Physics and Our World: A Symposium in Honor of Victor F. Weisskopf, published by the American Institute of Physics (1976). The personal tone of the original talk has been preserved in the paper, which was itself a slightly edited transcript of a tape. The figures reproduce transparencies used in the talk. The demonstration involved a tall rectangular transparent vessel of corn syrup, projected by an overhead projector turned on its side. Some essential hand waving could not be reproduced.E. M. PurcellThu, 04 Jun 1998 07:00:00 GMTThe Fractal Geometry of Nature
https://aapt.scitation.org/doi/10.1119/1.13295?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.13295?feed=most-citedBenoit B. Mandelbrot and John A. WheelerThu, 04 Jun 1998 07:00:00 GMTInteractive-engagement versus traditional methods: A six-thousand-student survey of mechanics test data for introductory physics courses
https://aapt.scitation.org/doi/10.1119/1.18809?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.18809?feed=most-citedA survey of pre/post-test data using the Halloun–Hestenes Mechanics Diagnostic test or more recent Force Concept Inventory is reported for 62 introductory physics courses enrolling a total number of students A consistent analysis over diverse student populations in high schools, colleges, and universities is obtained if a rough measure of the average effectiveness of a course in promoting conceptual understanding is taken to be the average normalized gain The latter is defined as the ratio of the actual average gain to the maximum possible average gain Fourteen “traditional” courses which made little or no use of interactive-engagement (IE) methods achievedRichard R. HakeWed, 04 Nov 1998 08:00:00 GMTWormholes in spacetime and their use for interstellar travel: A tool for teaching general relativity
https://aapt.scitation.org/doi/10.1119/1.15620?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.15620?feed=most-citedRapid interstellar travel by means of spacetime wormholes is described in a way that is useful for teaching elementary general relativity. The description touches base with Carl Sagan’s novel Contact, which, unlike most science fiction novels, treats such travel in a manner that accords with the best 1986 knowledge of the laws of physics. Many objections are given against the use of black holes or Schwarzschild wormholes for rapid interstellar travel. A new class of solutions of the Einstein field equations is presented, which describe wormholes that, in principle, could be traversed by human beings. It is essential in theseMichael S. Morris and Kip S. ThorneTue, 28 Jul 1998 07:00:00 GMTNonspreading wave packets
https://aapt.scitation.org/doi/10.1119/1.11855?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.11855?feed=most-citedWe show that for a wave ψ in the form of an Airy function the probability density ‖ψ‖2 propagates in free space without distortion and with constant acceleration. This ’’Airy packet’’ corresponds classically to a family of orbits represented by a parabola in phase space; under the classical motion this parabola translates rigidly, and the fact that no other curve has this property shows that the Airy packet is unique in propagating without change of form. The acceleration of the packet (which does not violate Ehrenfest’s theorem) is related to the curvature of the caustic (envelope) of the family ofM. V. Berry and N. L. BalazsThu, 04 Jun 1998 07:00:00 GMTPeer Instruction: Ten years of experience and results
https://aapt.scitation.org/doi/10.1119/1.1374249?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1374249?feed=most-citedWe report data from ten years of teaching with Peer Instruction (PI) in the calculus- and algebra-based introductory physics courses for nonmajors; our results indicate increased student mastery of both conceptual reasoning and quantitative problem solving upon implementing PI. We also discuss ways we have improved our implementation of PI since introducing it in 1991. Most notably, we have replaced in-class reading quizzes with pre-class written responses to the reading, introduced a research-based mechanics textbook for portions of the course, and incorporated cooperative learning into the discussion sections as well as the lectures. These improvements are intended to help studentsCatherine H. Crouch and Eric MazurFri, 10 Aug 2001 07:00:00 GMTEfficiency of a Carnot engine at maximum power output
https://aapt.scitation.org/doi/10.1119/1.10023?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.10023?feed=most-citedThe efficiency of a Carnot engine is treated for the case where the power output is limited by the rates of heat transfer to and from the working substance. It is shown that the efficiency, η, at maximum power output is given by the expression η = 1 − (T2/T1)1/2 where T1 and T2 are the respective temperatures of the heat source and heat sink. It is also shown that the efficiency of existing engines is well described by the above result.F. L. Curzon and B. AhlbornThu, 04 Jun 1998 07:00:00 GMTUnified equations for the slope, intercept, and standard errors of the best straight line
https://aapt.scitation.org/doi/10.1119/1.1632486?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1632486?feed=most-citedIt has long been recognized that the least-squares estimation method of fitting the best straight line to data points having normally distributed errors yields identical results for the slope and intercept of the line as does the method of maximum likelihood estimation. We show that, contrary to previous understanding, these two methods also give identical results for the standard errors in slope and intercept, provided that the least-squares estimation expressions are evaluated at the least-squares-adjusted points rather than at the observed points as has been done traditionally. This unification of standard errors holds when both and observations are subject toDerek York, Norman M. Evensen, Margarita López Martı́nez, and Jonás De Basabe DelgadoThu, 12 Feb 2004 08:00:00 GMTAn introduction to Pound–Drever–Hall laser frequency stabilization
https://aapt.scitation.org/doi/10.1119/1.1286663?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1286663?feed=most-citedThis paper is an introduction to an elegant and powerful technique in modern optics: Pound–Drever–Hall laser frequency stabilization. This introduction is primarily meant to be conceptual, but it includes enough quantitative detail to allow the reader to immediately design a real setup, suitable for research or industrial application. The intended audience is both the researcher learning the technique for the first time and the teacher who wants to cover modern laser locking in an upper-level physics or electrical engineering course.Eric D. BlackFri, 15 Dec 2000 08:00:00 GMTClassical Electrodynamics, 3rd ed.
https://aapt.scitation.org/doi/10.1119/1.19136?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.19136?feed=most-citedJ. D. Jackson and Ronald F. FoxFri, 20 Aug 1999 07:00:00 GMTBell’s theorem without inequalities
https://aapt.scitation.org/doi/10.1119/1.16243?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.16243?feed=most-citedIt is demonstrated that the premisses of the Einstein–Podolsky–Rosen paper are inconsistent when applied to quantum systems consisting of at least three particles. The demonstration reveals that the EPR program contradicts quantum mechanics even for the cases of perfect correlations. By perfect correlations is meant arrangements by which the result of the measurement on one particle can be predicted with certainty given the outcomes of measurements on the other particles of the system. This incompatibility with quantum mechanics is stronger than the one previously revealed for two‐particle systems by Bell’s inequality, where no contradiction arises at the level of perfectDaniel M. Greenberger, Michael A. Horne, Abner Shimony, and Anton ZeilingerThu, 04 Jun 1998 07:00:00 GMTQuantum Computation and Quantum Information
https://aapt.scitation.org/doi/10.1119/1.1463744?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1463744?feed=most-citedMichael A. Nielsen, Isaac Chuang, and Lov K. GroverFri, 12 Apr 2002 07:00:00 GMTAnalysis of standing vertical jumps using a force platform
https://aapt.scitation.org/doi/10.1119/1.1397460?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1397460?feed=most-citedA force platform analysis of vertical jumping provides an engaging demonstration of the kinematics and dynamics of one-dimensional motion. The height of the jump may be calculated (1) from the flight time of the jump, (2) by applying the impulse–momentum theorem to the force–time curve, and (3) by applying the work–energy theorem to the force-displacement curve.Nicholas P. LinthorneWed, 10 Oct 2001 07:00:00 GMTDetermination of Molecular Structure from Microwave Spectroscopic Data
https://aapt.scitation.org/doi/10.1119/1.1933338?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1933338?feed=most-citedA method is described for determining the position of an atom in a molecule from spectroscopic measurements on two isotopic species of the molecule. The method is applied to various types of molecules; explicit expressions are derived for linear, symmetric top, planar, and nonplanar asymmetric top molecules. The number of isotopic species on which measurements must be made to complete the structural determination, i.e., determine the position of every atom in the molecule, is discussed for various types of molecules. An application of the method to the determination of mass difference ratios is also considered.J. KraitchmanWed, 13 Jul 2005 07:00:00 GMTPrinciples of Plasma Physics
https://aapt.scitation.org/doi/10.1119/1.1987587?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1987587?feed=most-citedNicholas A. Krall, Alvin W. Trivelpiece, and Robert A. GrossThu, 07 Jul 2005 07:00:00 GMTEinstein coefficients, cross sections, f values, dipole moments, and all that
https://aapt.scitation.org/doi/10.1119/1.12937?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.12937?feed=most-citedThe relationships among various parameters describing the strength of optical transitions in atoms and molecules are reviewed. The application of these parameters to the description of the interaction between nearly monochromatic, directional light beams and atoms and molecules is given careful attention. Common pitfalls in relating these parameters are pointed out.Robert C. HilbornTue, 28 Jul 1998 07:00:00 GMTSolitary wave solutions of nonlinear wave equations
https://aapt.scitation.org/doi/10.1119/1.17120?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.17120?feed=most-citedA method is proposed for obtaining traveling‐wave solutions of nonlinear wave equations that are essentially of a localized nature. It is based on the fact that most solutions are functions of a hyperbolic tangent. This technique is straightforward to use and only minimal algebra is needed to find these solutions. The method is applied to selected cases.W. MalflietThu, 04 Jun 1998 07:00:00 GMTThe Structure of Science
https://aapt.scitation.org/doi/10.1119/1.1937571?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1937571?feed=most-citedErnest Nagel and David HawkinsWed, 20 Jul 2005 07:00:00 GMTThermodynamics of Crystals
https://aapt.scitation.org/doi/10.1119/1.1987046?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1987046?feed=most-citedDuane C. Wallace and Herbert CallenThu, 07 Jul 2005 07:00:00 GMTDynamical Theory of Crystal Lattices
https://aapt.scitation.org/doi/10.1119/1.1934059?feed=most-cited
https://aapt.scitation.org/doi/10.1119/1.1934059?feed=most-citedMax Born, Kun Huang, and M. LaxTue, 19 Jul 2005 07:00:00 GMT