Computer Program Detail Page

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written by Juan Aguirregabiria
edited by Wolfgang Christian
The Ejs Einstein's Train and Tunnel model displays the famous thought experiment from special relativity where a train enters a tunnel as seen from two points of view.  In one case the train is seen in the reference frame of the tunnel, while in the other case the train is seen in its reference frame. The relative velocity and the rest length of the tunnel can be changed via text boxes.  You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item.  

Ejs Einstein's Train and Tunnel 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_ehu_sr_train.jar file will run the program if Java is installed.  Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models.  Additional Ejs models for special relativity are available.  They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

Please note that this resource requires at least version 1.5 of Java (JRE).
View the source code document attached to this resource
Subjects Levels Resource Types
Relativity
- Special Relativity
- Lower Undergraduate
- Upper Undergraduate
- Instructional Material
= Activity
= Curriculum support
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- Professional/Practitioners
- application/java
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Access Rights:
Free access
Restriction:
© 2008 Juan M. Aguirregabiria
Additional information is available.
Keywords:
Easy Java Simulations, Einstein's train, Ejs, OSP, Open Source Physics, barn and pole, events, relativity, special relativity, train
Record Creator:
Metadata instance created August 19, 2008 by Mario Belloni
Record Updated:
June 5, 2014 by Andreu Glasmann
Last Update
when Cataloged:
August 18, 2008
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
J. Aguirregabiria, Computer Program EJS EINSTEIN’S TRAIN AND TUNNEL MODEL, Version 1.0 (2008), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7900&DocID=676).
AJP/PRST-PER
J. Aguirregabiria, Computer Program EJS EINSTEIN’S TRAIN AND TUNNEL MODEL, Version 1.0 (2008), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7900&DocID=676>.
APA Format
Aguirregabiria, J. (2008). Ejs Einstein’s Train and Tunnel Model (Version 1.0) [Computer software]. Retrieved August 30, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7900&DocID=676
Chicago Format
Aguirregabiria, Juan. "Ejs Einstein’s Train and Tunnel Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7900&DocID=676 (accessed 30 August 2014).
MLA Format
Aguirregabiria, Juan. Ejs Einstein’s Train and Tunnel Model. Vers. 1.0. Computer software. 2008. Java (JRE) 1.5. 30 Aug. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7900&DocID=676>.
BibTeX Export Format
@misc{ Author = "Juan Aguirregabiria", Title = {Ejs Einstein’s Train and Tunnel Model}, Month = {August}, Year = {2008} }
Refer Export Format

%A Juan Aguirregabiria
%T Ejs Einstein's Train and Tunnel Model
%E Wolfgang Christian, (ed)
%D August 18, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7900&DocID=676
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Aguirregabiria, Juan
%D August 18, 2008
%T Ejs Einstein's Train and Tunnel Model
%E Christian, Wolfgang
%7 1.0
%8 August 18, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=7900&DocID=676


Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

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