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written by Juan Aguirregabiria
edited by Wolfgang Christian
The Ejs Beats model displays the result of adding two waves with different frequencies.  The simulation displays the superposition of the two waves as well as a phasor diagram that shows how the waves add up at one point in space.  The ratio of the wave amplitudes, the ratio of the frequencies, and the phase shift between the two waves can be changed via textboxes.  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 Beats 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_oscillations_beats.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 classical mechanics 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
Oscillations & Waves
- Acoustics
- General
- Wave Motion
= Beats
= Interference and Diffraction
= Interference and Diffraction of Sound
- Lower Undergraduate
- High School
- Instructional Material
= Curriculum support
= 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 3 license. Additional information is available.
Rights Holder:
Juan M. Aguirregabiria
Keywords:
Easy Java Simulations, Ejs, OSP, Open Source Physics, beats, phasor, superposition, waves
Record Creator:
Metadata instance created October 13, 2008 by Mario Belloni
Record Updated:
June 2, 2014 by Andreu Glasmann
Last Update
when Cataloged:
October 1, 2008
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
J. Aguirregabiria, Computer Program BEATS MODEL, Version 1.0 (2008), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8174&DocID=856).
AJP/PRST-PER
J. Aguirregabiria, Computer Program BEATS MODEL, Version 1.0 (2008), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8174&DocID=856>.
APA Format
Aguirregabiria, J. (2008). Beats Model (Version 1.0) [Computer software]. Retrieved July 30, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8174&DocID=856
Chicago Format
Aguirregabiria, Juan. "Beats Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8174&DocID=856 (accessed 30 July 2014).
MLA Format
Aguirregabiria, Juan. Beats Model. Vers. 1.0. Computer software. 2008. Java (JRE) 1.5. 30 July 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8174&DocID=856>.
BibTeX Export Format
@misc{ Author = "Juan Aguirregabiria", Title = {Beats Model}, Month = {October}, Year = {2008} }
Refer Export Format

%A Juan Aguirregabiria
%T Beats Model
%E Wolfgang Christian, (ed)
%D October 1, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8174&DocID=856
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Aguirregabiria, Juan
%D October 1, 2008
%T Beats Model
%E Christian, Wolfgang
%7 1.0
%8 October 1, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=8174&DocID=856


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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.

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

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