Education Prize Logo
Science SPORE Prize
November 2011

NSF Logo
The Open Source Physics Project is supported by NSF DUE-0442581.

Classical Helium Model Documents

This material has 2 associated documents. Select a document title to view a document's information.

Main Document

Classical Helium 

written by Wolfgang Christian

The EJS Classical Helium Model is an example of a three-body problem that is similar to the gravitational three-body problem of a heavy sun and two light planets. The important difference is that the helium atom's two electrons repel one another, unlike the planetary case where the intraplanetary interaction is attractive.

The EJS Classical Helium Model was created using the Easy Java Simulations (Ejs) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_mech_orbits_ClassicalHelium.jar file will run the program if Java is installed.

An OSP program implementation of this model is also available.  Search the OSP collection for classical helium.

Last Modified March 28, 2014

This file has previous versions.

Source Code Documents

Classical Helium Model source code 

The source code zip archive contains an XML representation of the EJS Classical Helium Model.   Unzip this archive in your Ejs workspace to compile and run this model using Ejs.

Last Modified March 14, 2009

The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics