APS Excellence in Physics Education Award
November 2019

Education Prize Logo
Science SPORE Prize
November 2011

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

Computer Program Detail Page

Item Picture
Light and Shadow Model
written by Andrew Duffy
The Light and Shadow Model shows light that either passes through a mask with a hole in it, or it is blocked by an object, as it travels to a screen on the right. The user can turn on and off two light bulbs (red and blue) and drag the bulbs around the screen to change their positions. Investigate how the patterns of light and shadows change as you move the bulbs, the mask or object, and/or the screen, and as you change the size of the mask or object.

The Light and Shadow 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_bu_Light_and_Shadow.jar file will run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java (JRE).
1 source code document is available
Subjects Levels Resource Types
- Color
- Geometrical Optics
= Straight Line Propagation
- High School
- Middle School
- Elementary School
- Lower Undergraduate
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
- Audio/Visual
= Movie/Animation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
  • Currently 5.0/5

Rated 5.0 stars by 2 people

Want to rate this material?
Login here!

Access Rights:
Free access
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Andrew Duffy, Boston University
color mixing, light, shadow
Record Cloner:
Metadata instance created April 21, 2010 by Anne Cox
Record Updated:
May 13, 2016 by wee lookang
Last Update
when Cataloged:
April 21, 2010
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
A. Duffy, Computer Program LIGHT AND SHADOW MODEL (2010), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612).
A. Duffy, Computer Program LIGHT AND SHADOW MODEL (2010), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612>.
APA Format
Duffy, A. (2010). Light and Shadow Model [Computer software]. Retrieved June 12, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612
Chicago Format
Duffy, Andrew. "Light and Shadow Model." https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612 (accessed 12 June 2024).
MLA Format
Duffy, Andrew. Light and Shadow Model. Computer software. 2010. Java (JRE) 1.5. 12 June 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612>.
BibTeX Export Format
@misc{ Author = "Andrew Duffy", Title = {Light and Shadow Model}, Month = {April}, Year = {2010} }
Refer Export Format

%A Andrew Duffy %T Light and Shadow Model %D April 21, 2010 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612 %O application/java

EndNote Export Format

%0 Computer Program %A Duffy, Andrew %D April 21, 2010 %T Light and Shadow Model %8 April 21, 2010 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612

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.

This resource is stored in 2 shared folders.

You must login to access shared folders.

Light and Shadow Model:

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 Light and Shadow Model.

relation by Anne Cox
Is the Basis For Ejs Open Source Light and Shadow Model java applet

changes made:

design with layout to my usual specification
added source 3
design intensity sliders, for the effect of light and shadow when the light overlap

relation by wee lookang
Is the Basis For Light and Shadow Primary School JavaScript Model Simulation Virtual Lab

javascript html5 version, many thanks to andrew duffy!

relation by wee lookang

Know of another related resource? Login to relate this resource to it.
Save to my folders



Related Materials

Similar Materials

OSP Projects:
Open Source Physics - EJS Modeling
Physlet Physics
Physlet Quantum Physics
STP Book