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
Noon Shadow Source Code
The source code zip archive contains an XML representation of the Noon Shadow model. Unzip this archive in your EJS workspace to compile and run this model using EJS. download 6kb .zip
Last Modified: September 12, 2015
Christian, W., & Timberlake, T. (2010). Noon Shadow Model (Version 1.0) [Computer software]. Retrieved February 19, 2017, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9980&DocID=1605
%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.