Noon Shadow Model

APS Excellence in Physics Education Award
November 2019

Science SPORE Prize
November 2011

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

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Noon Shadow Model

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. It is a supplemental simulation for an article by Barbara Rovsek "Calibration of a Horizontal Sundial" in the The Physics Teacher 48 (6), 397-400 (2010).

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).

.jar

download 1172kb .jar
Last Modified: September 12, 2015
previous versions

1 source code document is available

Subjects	Levels	Resource Types
Astronomy - Astronomy Education = Curricula - Historical Astronomy = History of Astronomy	- High School - Middle School - Lower Undergraduate	- Instructional Material = Interactive Simulation

Intended Users	Formats	Ratings
- Learners - Educators - General Publics	- application/java	Currently 0.0/5 Want to rate this material? Login here!

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:: September 12, 2015 by Wolfgang Christian
Last Update when Cataloged:: April 19, 2010

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ComPADRE is beta testing Citation Styles!

Record Link

<a href="https://www.compadre.org/OSP/items/detail.cfm?ID=9980">Christian, Wolfgang, and Todd Timberlake. "Noon Shadow Model." Version 1.0.</a>

AIP Format

W. Christian and T. Timberlake, Computer Program NOON SHADOW MODEL, Version 1.0 (2010), WWW Document, (https://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), <https://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 5, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605

Chicago Format

Christian, Wolfgang, and Todd Timberlake. "Noon Shadow Model." Version 1.0. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605 (accessed 5 October 2024).

MLA Format

Christian, Wolfgang, and Todd Timberlake. Noon Shadow Model. Vers. 1.0. Computer software. 2010. Java (JRE) 1.5. 5 Oct. 2024 <https://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 https://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 https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605

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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 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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