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published by the Annenberg Foundation
This is an interactive Java simulation that illustrates the addition of the primary colors of light: red, blue, and green. It displays two light sources that cast shadows onto a shelf mounted on a wall.  Users control the color of the light sources to see what happens when the primary RGB colors (red, green, blue) are mixed. The resource includes background information on color addition and subtraction.  

This is part of a multimedia teachers' lab on properties of light. The lab is designed to provide teachers with the background knowledge and expertise to set up the same or similar activities for use in the middle school classroom.

Please note that this resource requires Java Applet Plug-in.
Subjects Levels Resource Types
- Color
= Synthesis and Analysis of Color
- Middle School
- High School
- Informal Education
- Instructional Material
= Activity
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- General Publics
- application/java
- text/html
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Access Rights:
Free access
Additional information is available.
© 2000 The Annenberg/CPB Projects
RGB colors, color, color addition, light, light and shadows, primary colors, shadows
Record Cloner:
Metadata instance created July 9, 2009 by Caroline Hall
Record Updated:
January 15, 2012 by Bruce Mason
Last Update
when Cataloged:
September 9, 2005
Other Collections:

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AIP Format
(Annenberg Foundation, 2000), WWW Document, (
The Science of Light: Colored Shadows, (Annenberg Foundation, 2000), <>.
APA Format
The Science of Light: Colored Shadows. (2005, September 9). Retrieved August 7, 2020, from Annenberg Foundation:
Chicago Format
Annenberg Foundation. The Science of Light: Colored Shadows. Annenberg Foundation, September 9, 2005. (accessed 7 August 2020).
MLA Format
The Science of Light: Colored Shadows. Annenberg Foundation, 2000. 9 Sep. 2005. 7 Aug. 2020 <>.
BibTeX Export Format
@misc{ Title = {The Science of Light: Colored Shadows}, Publisher = {Annenberg Foundation}, Volume = {2020}, Number = {7 August 2020}, Month = {September 9, 2005}, Year = {2000} }
Refer Export Format

%T The Science of Light: Colored Shadows
%D September 9, 2005
%I Annenberg Foundation
%O application/java

EndNote Export Format

%0 Electronic Source
%D September 9, 2005
%T The Science of Light: Colored Shadows
%I Annenberg Foundation
%V 2020
%N 7 August 2020
%8 September 9, 2005
%9 application/java

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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 Electronic References.

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The Science of Light: Colored Shadows:

Is Part Of The Science of Light

This is the full set of workshop materials by the authors. It is organized in two segments: 1) Light in Color, and 2) Laws of Light.

relation by Caroline Hall

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