APS Excellence in Physics Education Award
November 2019

Science SPORE Prize
November 2011

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

## Computer Program Detail Page

Interference in Time and Beats JS Model
written by Wolfgang Christian
The Interference in Time and Beats JavaScript Model simultaneously plays two sounds with frequency fA and fB and displays the signal recorded by a nearby microphone on an oscilloscope display. The oscilloscope's horizontal time axis is shown in seconds and the drop-down menu sets the scale. The vertical axis shows the sound amplitude for each sound and the sum of the sounds depending on the check-box settings.

The Interference in Time and Beats JavaScript Model was developed using the Easy Java Simulations (EJS) version 5.  It is distributed as a ready-to-run html page and requires only a browser with JavaScript support.
Subjects Levels Resource Types
Oscillations & Waves
- Acoustics
= Pitch
= The Ear
= Wave Analysis and Synthesis
- General
- Sound Reproduction
- Wave Motion
= Beats
= Compound Waves
= Wave Packets
- High School
- Informal Education
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- text/html
- application/zip
- application/javascript
• Currently 0.0/5

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Access Rights:
Free access
This material is released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license.
Rights Holder:
Wolfgang Christian
Merlot:
pending
Record Cloner:
Metadata instance created February 27, 2016 by Wolfgang Christian
Record Updated:
August 8, 2016 by Wolfgang Christian
Last Update
when Cataloged:
February 25, 2016

### AAAS Benchmark Alignments (2008 Version)

#### 4. The Physical Setting

4F. Motion
• 6-8: 4F/M4. Vibrations in materials set up wavelike disturbances that spread away from the source. Sound and earthquake waves are examples. These and other waves move at different speeds in different materials.
• 6-8: 4F/M7. Wave behavior can be described in terms of how fast the disturbance spreads, and in terms of the distance between successive peaks of the disturbance (the wavelength).
• 9-12: 4F/H6ab. Waves can superpose on one another, bend around corners, reflect off surfaces, be absorbed by materials they enter, and change direction when entering a new material. All these effects vary with wavelength.
ComPADRE is beta testing Citation Styles!

AIP Format
W. Christian, Computer Program INTERFERENCE IN TIME AND BEATS JS MODEL, Version 1.0 (2016), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13987&DocID=4370).
AJP/PRST-PER
W. Christian, Computer Program INTERFERENCE IN TIME AND BEATS JS MODEL, Version 1.0 (2016), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13987&DocID=4370>.
APA Format
Christian, W. (2016). Interference in Time and Beats JS Model (Version 1.0) [Computer software]. Retrieved May 21, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13987&DocID=4370
Chicago Format
Christian, Wolfgang. "Interference in Time and Beats JS Model." Version 1.0. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13987&DocID=4370 (accessed 21 May 2024).
MLA Format
Christian, Wolfgang. Interference in Time and Beats JS Model. Vers. 1.0. Computer software. 2016. 21 May 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13987&DocID=4370>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian", Title = {Interference in Time and Beats JS Model}, Month = {February}, Year = {2016} }
Refer Export Format

%A Wolfgang Christian %T Interference in Time and Beats JS Model %D February 25, 2016 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13987&DocID=4370 %O 1.0 %O text/html

EndNote Export Format

%0 Computer Program %A Christian, Wolfgang %D February 25, 2016 %T Interference in Time and Beats JS Model %7 1.0 %8 February 25, 2016 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13987&DocID=4370

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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.

### Interference in Time and Beats JS Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

Use the Easy Java Simulations Modeling and Authoring Tool to edit and to explore the source code for the Interference in Time and Beats JS Model.

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