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written by Wolfgang Christian and Todd Timberlake
The Noon Shadow model shows the geometry of the shadow cast by a gnomon at noon.  Users can change the orientation of the gnomon as well as its latitude.  The height of the gnomon and its shadow length are displayed in Earth radius units.

Noon Shadow model is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_astronomy_Noon Shadow.jar file will run the program if Java is installed.  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.

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
Astronomy
- Astronomy Education
= Curricula
- Historical Astronomy
= History of Astronomy
- High School
- Middle School
- Lower Undergraduate
- Instructional Material
= Curriculum support
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- General Publics
- application/java
  • Currently 0.0/5

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Access Rights:
Free access
License:
This material is released under a Creative Commons Attribution 3.0 license.
Rights Holder:
Todd Timberlake
Keywords:
Earth, Eratosthenes, Sun, circumference, gnomon, measure, shadow
Record Cloner:
Metadata instance created April 19, 2010 by Wolfgang Christian
Record Updated:
June 10, 2014 by Andreu Glasmann
Last Update
when Cataloged:
April 19, 2010
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian and T. Timberlake, Computer Program NOON SHADOW MODEL, Version 1.0 (2010), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605).
AJP/PRST-PER
W. Christian and T. Timberlake, Computer Program NOON SHADOW MODEL, Version 1.0 (2010), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605>.
APA Format
Christian, W., & Timberlake, T. (2010). Noon Shadow Model (Version 1.0) [Computer software]. Retrieved October 21, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605
Chicago Format
Christian, Wolfgang, and Todd Timberlake. "Noon Shadow Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605 (accessed 21 October 2014).
MLA Format
Christian, Wolfgang, and Todd Timberlake. Noon Shadow Model. Vers. 1.0. Computer software. 2010. Java (JRE) 1.5. 21 Oct. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian and Todd Timberlake", Title = {Noon Shadow Model}, Month = {April}, Year = {2010} }
Refer Export Format

%A Wolfgang Christian
%A Todd Timberlake
%T Noon Shadow Model
%D April 19, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%A Timberlake, Todd
%D April 19, 2010
%T Noon Shadow Model
%7 1.0
%8 April 19, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605


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.

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Noon 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 Noon Shadow Model.

relation by Wolfgang Christian

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