Education Prize Logo
Science SPORE Prize
November 2011

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

Computer Program Detail Page

Item Picture
written by Todd Timberlake
The Ejs Celestial Globe model simulates the Two Sphere Universe theory of the Ancient Greeks. This theory supposes the stars to be fixed on the surface of a Celestial Sphere, with the spherical Earth at the center of this sphere. The simulation shows the motion of Sun and stars in this model, as well as the horizon plane for an observer on the spherical Earth. Two views are shown: one from outside the Celestial Sphere, and the other from the point of view of an observer on Earth looking up. Most of the characteristics of the simulation can be adjusted, including the period of Sun's motion, the tilt of the ecliptic relative to the equator, the latitude of the observer, the time of day and the time of year.

Ejs Celestial Globe 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_astronomy_CelestialGlobe.jar file will run the program if  Java is installed.  Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models.  Additional Ejs models for astronomy are available.  They can be found by searching ComPADRE for  Open Source Physics, OSP, or Ejs.

Please note that this resource requires at least version 1.5 of Java (JRE).
View the supplemental document attached to this resource
View the source code documents attached to this resource (2)
Subjects Levels Resource Types
Astronomy
- Astronomy Education
= Curricula
- Fundamentals
= Night Sky
- Historical Astronomy
= History of Astronomy
- Lower Undergraduate
- Middle School
- High School
- Instructional Material
= Curriculum support
= Interactive Simulation
Intended Users Formats Ratings
- Educators
- Learners
- 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:
EJS, Earth, Easy Java Simulations, OSP, Open Source Physics, Sun, celestial globe, celestial sphere
Record Cloner:
Metadata instance created August 18, 2009 by Mario Belloni
Record Updated:
June 13, 2014 by Andreu Glasmann
Last Update
when Cataloged:
August 18, 2009

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4A. The Universe
  • K-2: 4A/P2. The sun can be seen only in the daytime, but the moon can be seen sometimes at night and sometimes during the day. The sun, moon, and stars all appear to move slowly across the sky.

NSES Content Standards

Con.D: Earth & Space Science
  • K-4: Objects in the Sky
  • K-4: Changes in Earth & Sky
  • 5-8: Earth in the Solar System
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
T. Timberlake, Computer Program CELESTIAL GLOBE MODEL, Version 1.0 (2009), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9379&DocID=1278).
AJP/PRST-PER
T. Timberlake, Computer Program CELESTIAL GLOBE MODEL, Version 1.0 (2009), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9379&DocID=1278>.
APA Format
Timberlake, T. (2009). Celestial Globe Model (Version 1.0) [Computer software]. Retrieved November 27, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9379&DocID=1278
Chicago Format
Timberlake, Todd. "Celestial Globe Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9379&DocID=1278 (accessed 27 November 2014).
MLA Format
Timberlake, Todd. Celestial Globe Model. Vers. 1.0. Computer software. 2009. Java (JRE) 1.5. 27 Nov. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9379&DocID=1278>.
BibTeX Export Format
@misc{ Author = "Todd Timberlake", Title = {Celestial Globe Model}, Month = {August}, Year = {2009} }
Refer Export Format

%A Todd Timberlake
%T Celestial Globe Model
%D August 18, 2009
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9379&DocID=1278
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Timberlake, Todd
%D August 18, 2009
%T Celestial Globe Model
%7 1.0
%8 August 18, 2009
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=9379&DocID=1278


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.

This resource and its subdocuments is stored in 10 shared folders.

You must login to access shared folders.

Celestial Globe 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 EJS Celestial Globe Model.

relation by Mario Belloni

Know of another related resource? Login to relate this resource to it.
Save to my folders

Supplements

Contribute

Related Materials

Similar Materials

The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics