Light and Shadow Model

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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).

.jar

download 1174kb .jar
Last Modified: June 10, 2014
previous versions

1 source code document is available

Subjects	Levels	Resource Types
Optics - 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!

Mirror:: http://physics.bu.edu/~duffy/Ejs/…
Access Rights:: Free access
License:: This material is released under a GNU General Public License Version 3 license.
Rights Holder:: Andrew Duffy, Boston University
Keywords:: 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
Other Collections:: The Open Source Physics

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<a href="https://www.compadre.org/portal/items/detail.cfm?ID=9983">Duffy, Andrew. "Light and Shadow Model."</a>

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A. Duffy, Computer Program LIGHT AND SHADOW MODEL (2010), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612).

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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 September 11, 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 11 September 2024).

MLA Format

Duffy, Andrew. Light and Shadow Model. Computer software. 2010. Java (JRE) 1.5. 11 Sep. 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9983&DocID=1612>.

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@misc{ Author = "Andrew Duffy", Title = {Light and Shadow Model}, Month = {April}, Year = {2010} }

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%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

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%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

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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
enjoy!

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

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