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written by Roberto B. Salgado
This applet explains the principles of Relativity based on Lorentzian and Galilean spacetime. The user can control the boost/Velocity. The applet will display the spacetime diagram for an inertial observer traveling with that velocity. The mouse tracks the Spacetime Diagram's (t,x) coordinates. It also covers topics like the twin paradox, time dilation and the clock effect.

This resource is part of the larger collection "The Light Cone", which integrates text explanations with diagrams and animations to promote understanding of relativity. See Related Materials for a link to the parent site.

Please note that this resource requires Java Applet Plug-in.
Editor's Note:
Subjects Levels Resource Types
- Reference Frames
- Special Relativity
= Time Dilation
- High School
- Lower Undergraduate
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
Appropriate Courses Categories Ratings
- Algebra-based Physics
- AP Physics
- Activity
- New teachers
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Intended Users:
General Public
Access Rights:
Free access
© 1997 Robert B. Salgado
Galilean transformation, Lorentz transformation, relativity, time dilation, twin paradox
Record Creator:
Metadata instance created March 5, 2007 by Amin Parnian
Record Updated:
August 16, 2020 by Lyle Barbato
Last Update
when Cataloged:
March 6, 2015
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
R. Salgado, (1997), WWW Document, (http://web.archive.org/web/20090612062319/http://physics.syr.edu/courses/modules/LIGHTCONE/java/TwinParadox.html).
R. Salgado, The Light Cone: The Twin Paradox Applet (1997), <http://web.archive.org/web/20090612062319/http://physics.syr.edu/courses/modules/LIGHTCONE/java/TwinParadox.html>.
APA Format
Salgado, R. (2015, March 6). The Light Cone: The Twin Paradox Applet. Retrieved June 13, 2024, from http://web.archive.org/web/20090612062319/http://physics.syr.edu/courses/modules/LIGHTCONE/java/TwinParadox.html
Chicago Format
Salgado, Roberto B.. The Light Cone: The Twin Paradox Applet. March 6, 2015. http://web.archive.org/web/20090612062319/http://physics.syr.edu/courses/modules/LIGHTCONE/java/TwinParadox.html (accessed 13 June 2024).
MLA Format
Salgado, Roberto B.. The Light Cone: The Twin Paradox Applet. 1997. 6 Mar. 2015. 13 June 2024 <http://web.archive.org/web/20090612062319/http://physics.syr.edu/courses/modules/LIGHTCONE/java/TwinParadox.html>.
BibTeX Export Format
@misc{ Author = "Roberto B. Salgado", Title = {The Light Cone: The Twin Paradox Applet}, Volume = {2024}, Number = {13 June 2024}, Month = {March 6, 2015}, Year = {1997} }
Refer Export Format

%A Roberto B. Salgado %T The Light Cone: The Twin Paradox Applet %D March 6, 2015 %U http://web.archive.org/web/20090612062319/http://physics.syr.edu/courses/modules/LIGHTCONE/java/TwinParadox.html %O application/java

EndNote Export Format

%0 Electronic Source %A Salgado, Roberto B. %D March 6, 2015 %T The Light Cone: The Twin Paradox Applet %V 2024 %N 13 June 2024 %8 March 6, 2015 %9 application/java %U http://web.archive.org/web/20090612062319/http://physics.syr.edu/courses/modules/LIGHTCONE/java/TwinParadox.html

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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.

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The Light Cone: The Twin Paradox Applet:

Is Part Of The Light Cone: an illuminating introduction to relativity

This is the parent collection of The Light Cone, a website devoted to promoting understanding of relativity concepts for beginning learners.

relation by Caroline Hall

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