Wolfgang Christian

Modeling Physics with Easy Java Simulations

Modeling has been shown to correct weaknesses of traditional instruction by engaging students in the design of physical models to describe, explain, and predict phenomena.1 Although the modeling method can be used without computers, the use of computers allows students to study problems that are difficult and time consuming, to visualize their results, and to communicate their results with others. This combination of computer modeling with theory and experiment can achieve insight and understanding that cannot be achieved with only one approach. This paper describes the Easy Java Simulations (Ejs) modeling and authoring tool and shows how it can be used to teach mechanics concepts with computer modeling.

Variational Principles and the Numerical Solution of Scattering Problems

Scattering Theory Numerical Methods Variational Principles for On-Shell Amplitudes Variational Principles for Off-Shell Amplitudes Variational Methods for Realistic Problems Numerical Studies Bibliography Index.

Teaching Physics (and Some Computation) Using Intentionally Incorrect Simulations

Computer simulations are widely used in physics instruction because they can aid student visualization of abstract concepts, they can provide multiple representations of concepts (graphical, trajectories, charts), they can approximate real-world examples, and they can engage students interactively, all of which can enhance student understanding of physics concepts. For these reasons, we create and use simulations to teach physics,1,2 but we also want students to recognize that the simulations are only as good as the physics behind them, so we have developed a series of simulations that are intentionally incorrect, where the task is for students to find and correct the errors.3

Science on the Web : a connoisseur's guide to over 500 of the best, most useful, and most fun science Websites

How can you change your mind to be more open? There many sources that can help you to improve your thoughts. It can be from the other experiences and also story from some people. Book is one of the trusted sources to get. You can find so many books that we share here in this website. And now, we show you one of the best, the science on the web a connoisseurs guide to over 500 of the best most useful and most fun science websites.

The Physlet Approach to Simulation Design

Over the past two years, the AAPT/ComPADRE staff and the Open Source Physics group have published the second edition of Physlet Physics and Physlet Quantum Physics , delivered as interactive web pages on AAPT/ComPADRE and as free eBooks available through iTunes and Google Play. These two websites, and their associated books, add over 1000 interactive exercises for the teaching of introductory physics, introductory and intermediate modern physics, and quantum mechanics to AAPT/ComPADRE.

Teaching astronomy using tracker

A recent paper in this journal1 presented a set of innovative uses of video analysis for introductory physics using Tracker. In addition, numerous other papers have described how video analysis can be a meaningful part of introductory courses.2–4 Yet despite this, there are few resources for using video analysis in introductory astronomy classes. In this paper we describe the use of Tracker in introductory astronomy to analyze a “video” consisting of a series of still images of star fields and sunspots. Because astronomy focuses on concepts unfamiliar to most students, the visualization that video analysis provides can be especially valuable.

Graphs and tracks revisited

We have recently developed a Graphs and Tracks model based on an earlier program by David Trowbridge,1 as shown in Fig. 1. Our model can show position, velocity, acceleration, and energy graphs and can be used for motion-to-graphs exercises. Users set the heights of the track segments, and the model displays the motion of the ball on the track together with position, velocity, and acceleration graphs. This ready-to-run model is available in the ComPADRE OSP Collection at www.compadre.org/osp/items/detail.cfm?ID=12023.

Tumbling: From Rally Cars to Toast

The article1 by Rod Cross describing the translational and rotational motion of the “Launch of a Vehicle from a Ramp” motivated us to create two computer models showing this type of dynamical behavior.