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written by Todd Timberlake
The EJS Hot and Cold Ideal Gases model simulates the mixing of hot and cold two-dimensional ideal gases in a square box.  This simulation can be used as part of the activity described in "The Statistical Interpretation of Entropy: An Activity" by Todd Timberlake, to be published in The Physics Teacher.

In the model, one gas is initially confined to the left side of the box while the other gas is confined to the right side. An animation window shows the motion of the particles in the box, while an optional graph window plots the temperature of each side of the box, which is determined by measuring the average KE of the particles on each side.  The initial number of particles and temperature on each side of the square can be changed and a button allows the user to reverse the particle velocities at any time.  The user can modify this simulation if EJS is installed locally by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item.

EJS Hot and Cold Ideal Gases 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_entropy_HotAndColdIdealGases.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 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
Thermo & Stat Mech
- Kinetics and Dynamics
= Approach to Equilibrium
- Models
= Ideal Gas
- Second and Third Law
= Entropy
- Lower Undergraduate
- High School
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Educators
- Learners
- application/java
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Access Rights:
Free access
License:
This material is released under a GNU General Public License Version 2 license.
Rights Holder:
Todd Timberlake
Keywords:
EJS, Easy Java Simulations, OSP, Open Source Physics, entropy, equilibrium, gas expansion, ideal gas, second law of thermodynamics
Record Creator:
Metadata instance created June 18, 2010 by Todd Timberlake
Record Updated:
June 6, 2014 by Andreu Glasmann
Last Update
when Cataloged:
June 18, 2010
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
T. Timberlake, Computer Program HOT AND COLD IDEAL GASES (2010), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10095&DocID=1704).
AJP/PRST-PER
T. Timberlake, Computer Program HOT AND COLD IDEAL GASES (2010), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10095&DocID=1704>.
APA Format
Timberlake, T. (2010). Hot and Cold Ideal Gases [Computer software]. Retrieved October 23, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10095&DocID=1704
Chicago Format
Timberlake, Todd. "Hot and Cold Ideal Gases." http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10095&DocID=1704 (accessed 23 October 2014).
MLA Format
Timberlake, Todd. Hot and Cold Ideal Gases. Computer software. 2010. Java (JRE) 1.5. 23 Oct. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10095&DocID=1704>.
BibTeX Export Format
@misc{ Author = "Todd Timberlake", Title = {Hot and Cold Ideal Gases}, Month = {June}, Year = {2010} }
Refer Export Format

%A Todd Timberlake
%T Hot and Cold Ideal Gases
%D June 18, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10095&DocID=1704
%O application/java

EndNote Export Format

%0 Computer Program
%A Timberlake, Todd
%D June 18, 2010
%T Hot and Cold Ideal Gases
%8 June 18, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10095&DocID=1704


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

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Hot and Cold Ideal Gases:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Hot and Cold Ideal Gases.

relation by Wolfgang Christian

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