New PSRC collection resources
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The latest material additions to the PSRC.en-USCopyright 2016, ComPADRE.orgpsrc@compadre.orgpsrc@compadre.orgTue, 15 Mar 2016 14:40:08 ESThttp://blogs.law.harvard.edu/tech/rsshttp://www.compadre.org/portal/services/images/LogoSmallPSRC.gifPSRC
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12535Forked diffraction pattern
http://www.compadre.org/psrc/items/detail.cfm?ID=13988
This is a Matlab program to generate a forked diffraction pattern that produces Laguerre-Gauss (LG) beams. Its primary use is for loading it onto a spatial light modulator (Cambridge correlators). The program can produce a phase blaze as well as a binary grating. The phase blaze is for improving the diffraction efficiency. A binary-grating pattern could be printed and the negative of a black & white photograph of it could become a passive diffraction grating.
Other parameters that can be varied are:
-the line density of the pattern, which controls the diffraction angle,
-the topological charge "l" of the fork, which ends up generating an LG beam with topological charge on first-order diffraction. In LG beams the phase varies with angle, so "l" is the number of times that the phase changes by 2-pi per turn around the center of the beam. The center of the beam has an optical vortex. For more information see: E.J. Galvez, Am. J. Phys. 74, 355-361 (2006).
-an option for amplitude modulation, which generates a purer spatial mode
-an option to correct when the SLM does not vary from 0 to 2-pi in phase encoding.
This program will be referred to in an upcoming article in the Am. J. Phys. on a new undergraduate lab on Poincare beams, which first generate LG beams.Optics/Diffractionhttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=13988Tue, 15 Mar 2016 14:40:08 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=13988Moment of Inertia - Mass Integration
http://www.compadre.org/psrc/items/detail.cfm?ID=13964
This modeling and experimental activity is designed to give students a better understanding the moment of inertia. Using an arbitrary shaped physical pendulum, the period of oscillation at various points along an axis can be used to determine the moment of inertia. The model is also tested using a pendulum with a simple geometry. This activity is designed for students with knowledge of calculus, with both numerical and analytic integrals computed.
This is part of a collection of similar resources developed by the College-Ready Math-Science Partnership at the University of Arkansas.Oscillations & Waves/Oscillations/Pendulahttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=13964Tue, 05 Jan 2016 15:35:56 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=13964AAPT Films
http://www.compadre.org/psrc/items/detail.cfm?ID=13823
This Youtube channel provides videos on a wide range of physics topics. General Physics/Collectionshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=13823Sat, 21 Nov 2015 08:57:38 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=13823Advanced Laboratory Physics Association
http://www.compadre.org/psrc/items/detail.cfm?ID=13624
The Advanced Laboratory Physics Association (ALPhA) is an association of college and university faculty and staff dedicated to advanced experimental physics instruction. ALPhA works with other professional organizations, including the American Association of Physics Teachers (AAPT), the American Physical Society (APS), and the Optical Society of America (OSA), to advance laboratory instruction.
ALPhA's efforts include annual Laboratory Immersions Programs to help advanced laboratory instructors learn new labs, organizing conferences on advanced laboratories, and ALPhA’s relatively inexpensive Single Photon Detector Initiative.General Physics/Collections/Advanced Laboratorieshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=13624Sat, 21 Nov 2015 08:26:37 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=13624SERC: Direct Measurement Video Library
http://www.compadre.org/psrc/items/detail.cfm?ID=13720
This is the portal to access the full collection of Direct Measurement Videos (DMV). Each video links to a page with file format options and suggestions for use in the classroom. These high-resolution short videos feature tools that allow students to easily analyze physical situations encountered in introductory mechanics courses. Features include grid and ruler overlays, frame-counters, and other screen overlays for making precise measurements. Videos are organized by topic, including kinematics, forces, rotational motion, momentum, energy, SHM, waves, and light. There is a separate link for the Student Video Library, which gives students access without providing instructional materials or solutions.
This material is part of <i>Pedagogy in Action</i>, a library of resources for educators provided by SERC, the Science Education Resource Center.General Physics/Collections/Introductory Mechanicshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=13720Sat, 21 Nov 2015 07:26:29 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=13720Project NEXUS UMCP
http://www.compadre.org/psrc/items/detail.cfm?ID=13822
This website holds the resources developed by the Project NEXUS, an effort aimed at improving the education of biology and health science students. Materials are available for a two-semester physics course, including readings, problems, clicker questions, and laboratories. Several general themes have been developed for these courses including Energy and Chemical Bonding, Diffusion and Entropy, and Mathematical Reasoning. Research results and other information is also provided.General Physics/Collections/Introductory Mechanicshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=13822Sat, 21 Nov 2015 00:13:55 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=13822Tutorials in Physics: Quantum Mechanics
http://www.compadre.org/psrc/items/detail.cfm?ID=13267
This web site provides access to a set of student tutorials designed to supplement lectures and textbooks through in quantum mechanics. The tutorials are most suitable for courses in which there is an opportunity for students to work together in small groups; however, they can also be adapted for use in large, lecture hall settings. Carefully sequenced exercises and questions engage students in the type of active intellectual involvement that is necessary for developing a functional understanding of physics.
The website contains resources for instructors, including sample pretests, post-tests examination questions, suggestions for preparing Teaching Assistants, as well as details about the individual tutorials. Quantum Physics/Generalhttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=13267Fri, 20 Nov 2015 23:31:54 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=132673D Simulations of Interacting Particles
http://www.compadre.org/psrc/items/detail.cfm?ID=7402
At the Institute for Science Education, a simulation program named xyZET has been developed and combined with an introductory course in mechanics to demonstrate its usefulness in teaching and learning physics. One of its distinct features enables the visualization of the movement of interacting particles in 3D. It adds value to teaching and learning complex processes, where visualization can help reduce cognitive load. The program can be used during lectures, where a simulation can often speak for itself in place of verbal explanation. The program also supports the development of exercise material for individualized learning. Such material in the form of Web pages can be combined with xyZET simulations, controlled by applets. Its basic features are discussed.General Physics/Computational Physicshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=7402Mon, 31 Aug 2015 14:46:53 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=7402Something Wonderful This Way Comes [Bootable Cluster CD]
http://www.compadre.org/psrc/items/detail.cfm?ID=7368
Clusters dedicated exclusively for educational purposes are rare, yet most educational institutions have an abundance of PC and Macintosh laboratories. The suggestive name bootable cluster CD (BCCD) offers hope. Indeed, at the BCCD's core is a bootable image that runs completely off dedicated media, which lets us use the BCCD to convert, within minutes, practically any room of Intel- or PowerPC-based workstations into a potent parallel computing environment. What we have here is a comprehensive framework for high-performance computing education, and that, my friends, is the opposite of a failure to communicate. This article elaborates on what lies under the BCCD hood, some uses of the BCCD, and future directions.General Physics/Computational Physicshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=7368Mon, 31 Aug 2015 14:41:19 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=7368PASCO
http://www.compadre.org/psrc/items/detail.cfm?ID=335
PASCO offers a comprehensive inventory of physics laboraty apparatus, and a variety of interfaces and sensors bundled with computer based curriculum for Chemistry, Biology, Physics and General Science.General Physics/Equipmenthttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=335Mon, 31 Aug 2015 12:08:03 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=335Software Carpentry: Getting Scientists to Write Better Code by Making Them More Productive
http://www.compadre.org/psrc/items/detail.cfm?ID=7400
This article describes a one-semester course that teaches scientists and engineers the most important aspects of modern software development. This course has shown a significant increase in the efficiency of the students in computational work. Topics include the importance of version control, testing, scripting languages, and collaborative software development. The course focuses on small-scale and immediately practical issues.General Physics/Computational Physicshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=7400Tue, 25 Aug 2015 18:33:38 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=7400Computational Physics Education with Python
http://www.compadre.org/psrc/items/detail.cfm?ID=7370
Educators at an institution in Germany have started using Python to teach computational physics. The author describes how graphical visualizations also play an important role, which he illustrates here with a few simple examples.General Physics/Computational Physicshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=7370Tue, 25 Aug 2015 18:10:20 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=7370VPython: 3D interactive scientific graphics for students
http://www.compadre.org/psrc/items/detail.cfm?ID=7366
This article introduces the features of VPython, a package for programming and displaying interactive 3D graphics. Beginning students without prior programming experience have used VPython to write programs with real time 3D visualizations of mechanical systems. Developed at Carnegie Mellon University, VPython is part of an effort to develop a more modern first-year physics curriculum.General Physics/Computational Physicshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=7366Tue, 25 Aug 2015 17:59:41 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=7366Why Computer Architecture Matters
http://www.compadre.org/psrc/items/detail.cfm?ID=7360
This is the first of a three-part series of articles on improving the computational efficiency of numerical algorithms. The authors present the implementation of a simple but computationally intensive algorithm and show how a series of incremental refinements to the code yields significant performance gains.
In this first installment, the focus is on instruction selection and scheduling.Other Sciences/Computer Sciencehttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=7360Tue, 25 Aug 2015 17:53:56 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=7360The Verlet Algorithm
http://www.compadre.org/psrc/items/detail.cfm?ID=8667
This Mathematica Notebook presents the Verlet Algorithm for integrating second order differential equations. This is an improvement on the Euler method because it better conserves energy for mechanical systems.Other Sciences/Computer Sciencehttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=8667Tue, 25 Aug 2015 17:33:47 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=8667The trouble with numerical derivatives
http://www.compadre.org/psrc/items/detail.cfm?ID=8665
This Mathematica Notebook explores the effect of noise in data when performing numerical analysis. The numerical derivative of a set of data is always less smooth than the data itself because any noise is magnified by the derivative. Ways to improve the analysis are also illustrated.Mathematical Tools/Numerical Analysishttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=8665Tue, 25 Aug 2015 17:15:27 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=8665Wave Packet Scattering
http://www.compadre.org/psrc/items/detail.cfm?ID=8663
This Mathematica Notebook illustrates the computation of time dependent wave packet scattering from square wells. The calculation is done for one dimensional systems.
This notebook includes code only, and does not include information about either the calculation or the physical system. Users will need some familiarity with Mathematica code.Quantum Physics/Scattering and Continuum State Systemshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=8663Tue, 25 Aug 2015 17:00:46 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=8663Evaluation Monitors
http://www.compadre.org/psrc/items/detail.cfm?ID=8655
This brief tutorial illustrates Mathematica Tools that monitor the intermediate steps in computations. EvaluationMonitor and StepMonitor are options for many of Mathematica's numerical functions and are excellent ways of tracking the performance of an ODE solver. Included is introductions to the functions Sow and Reap.Mathematical Tools/Numerical Analysishttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=8655Tue, 25 Aug 2015 11:21:06 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=8655Solutions Manual for Numerical Solutions to the Schrödinger Equation
http://www.compadre.org/psrc/items/detail.cfm?ID=8575
This Mathematica notebook contains solutions to several numerical problems and exercises in quantum mechanics. Topics include the shooting method, wavepacket dynamics, probability functions, and the Laplace equation. All of the problems are in one dimension, to help students focus on the physics of quantum systems.Quantum Physics/Bound State Systemshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=8575Tue, 25 Aug 2015 11:11:07 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=8575Numerical Solutions to the Schrödinger Equation
http://www.compadre.org/psrc/items/detail.cfm?ID=8566
This Mathematica notebook provides an introduction to a number of computational techniques for solving quantum mechanics problems. It focuses on one-dimensional problems that allow the student to learn the basics of quantum mechanics and to develop a quantum intuition without some of the mathematical complexities present in three-dimensions.Quantum Physics/Bound State Systemshttp://www.compadre.org/psrc/bulletinboard/Thread.cfm?ID=8566Tue, 25 Aug 2015 11:09:32 ESThttp://www.compadre.org/psrc/items/detail.cfm?ID=8566