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written by Wolfgang Christian, Mario Belloni, and Anne Cox
educational validator: Bethany Zach
The GR Schwarzschild Time uses the Schwarzschild metric to show the local time at points near a black hole in comparison to the time measured by a faraway observer. It also shows sinusoidal signals emitted from nearby points as recorded by a local (shell) observer. The default configuration is three observers near a black hole.

GR Schwarzschild Time is part of a suite of Open Source Physics programs that model aspects of General Relativity. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the gr_schwarzschild_time.jar file will run the program if Java is installed. Other programs provide additional visualizations.  They can be found by searching ComPADRE for Open Source Physics, OSP, or General Relativity.

Please note that this resource requires at least version 1.5 of Java.
View the supplemental documents attached to this resource (2)
  • GR Schwarzschild Time Documentation
    A pdf document that briefly describes the GR Schwarzschild Time program. It describes how to use the gr_schwarzschild_time.jar file and contains short tutorial exercises for use with the gr_schwarzschild_time.jar file.
  • GR Schwarzschild Time Distribution
    The materials distributed in this zip file are in support of the GR Schwarzschild Time program. This distribution contains the GR Schwarzschild Time program, documentation, and exercises.
Subjects Levels Resource Types
- Fundamentals
= Relativity
- General Relativity
= Black Holes
- Lower Undergraduate
- Upper Undergraduate
- Instructional Material
= Activity
= Interactive Simulation
= Lecture/Presentation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
  • Currently 0.0/5

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Access Rights: Free access
Restriction: © 2008 Wolfgang Christian
Additional information is available.
PACSs: 01.50.hv
Keywords: general relativity, metric, time dilation
Record Creator: Metadata instance created May 23, 2008 by Anne Cox
Record Updated: Aug 22, 2009 by Gregory Comer
Last Update
when Cataloged:
May 23, 2008
Other Collections:
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian, M. Belloni, and A. Cox, Computer Program GR SCHWARZSCHILD TIME PROGRAM (2008), WWW Document, (
W. Christian, M. Belloni, and A. Cox, Computer Program GR SCHWARZSCHILD TIME PROGRAM (2008), <>.
APA Format
Christian, W., Belloni, M., & Cox, A. (2008). GR Schwarzschild Time Program [Computer software]. Retrieved September 22, 2017, from
Chicago Format
Christian, W, M. Belloni, and A. Cox. "GR Schwarzschild Time Program." (accessed 22 September 2017).
MLA Format
Christian, Wolfgang, Mario Belloni, and Anne Cox. GR Schwarzschild Time Program. Computer software. 2008. Java 1.5. 22 Sep. 2017 <>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian and Mario Belloni and Anne Cox", Title = {GR Schwarzschild Time Program}, Month = {May}, Year = {2008} }
Refer Export Format

%A Wolfgang Christian
%A Mario Belloni
%A Anne Cox
%T GR Schwarzschild Time Program
%D May 23, 2008
%O application/java

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%A Belloni, Mario
%A Cox, Anne
%D May 23, 2008
%T GR Schwarzschild Time Program
%8 May 23, 2008

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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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GR Schwarzschild Time Program:

Is Part Of General Relativity (GR) Package

The General Relativity (GR) Package contains curricular materials for the teaching of general relativity using the GR Schwarzschild Time Program.

relation by Mario Belloni

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