written by Andreu Glasmann

The Zeeman Catastrophe Machine Model shows the rotational motion of wheel that is free to rotate but is connected to two elastics, one which is free to move in the xy-plane, and one that is set a fixed distance d away. The model initiates in a steady state where there is no rotational velocity and the magnitude of the tensions in the two elastics are equal. The user can drag the blue point to change the torque on the wheel, or they can enter values in the input fields on the top panel. The user can also change the angle theta, the coefficient of dampening, the spring constant, the moment of inertia.

The Zeeman Catastrophe Machine Model was developed as a final project in a sophomore-level Computational Physics course (Phy 200) using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.   Double clicking the jar file will run the program if Java is installed.  You can modify this simulation if you have EJS installed by right-clicking within the map and selecting "Open Ejs Model" from the pop-up menu item.

• Download ejs_mech_ZeemanCatastropheMachine.jar - 1307kb Java Archive File

Last Modified June 13, 2014

This file has previous versions.

Final project report for Computational Physics (Phy 200).

• Download ZeemanCatastropheMachinePoster.pdf - 375kb Adobe PDF Document

Last Modified May 15, 2012

This file is included in the full-text index.

Davidson College student Research Symposium poster presentation.

• Download ZeemanCatastropheMachinePoster.pdf - 375kb Adobe PDF Document

Last Modified May 15, 2012

The source code zip archive contains an EJS-XML representation of the Zeeman Catastrophe Machine Model.   Unzip this archive in your EJS workspace to compile and run this model using EJS.

• Download ejs_mech_ZeemanCatastropheMachine.zip - 111kb Compressed File

Last Modified May 15, 2012