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written by
Walter Fendt
Available Languages: English, French, Italian, Spanish, German, Portuguese, Polish, Thai, Russian, Romanian, Hungarian, Croatian, Estonian, Czech
If you're interested in the motion of planets in the solar system, try this Java applet for a demonstration of Kepler's Second Law. You'll see the time taken to sweep out equal areas on opposites sides of the orbit. You can change the semi-major axis and eccentricity of the orbit. There's also an option to show the velocity vector of the orbiting object. This applet is available in different languages and is part of a large collection of similar physics applets.
Please note that this resource requires at least version 1.4.2 of Java Applet Plug-in.
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![]() <a href="https://www.compadre.org/informal/items/detail.cfm?ID=3276">Fendt, Walter. Walter Fendt Physics Applets: Kepler's Second Law. January 18, 2003.</a>
![]() W. Fendt, (2000), WWW Document, (https://www.walter-fendt.de/html5/phen/keplerlaw2_en.htm).
![]() W. Fendt, Walter Fendt Physics Applets: Kepler's Second Law (2000), <https://www.walter-fendt.de/html5/phen/keplerlaw2_en.htm>.
![]() Fendt, W. (2003, January 18). Walter Fendt Physics Applets: Kepler's Second Law. Retrieved April 18, 2025, from https://www.walter-fendt.de/html5/phen/keplerlaw2_en.htm
![]() Fendt, Walter. Walter Fendt Physics Applets: Kepler's Second Law. January 18, 2003. https://www.walter-fendt.de/html5/phen/keplerlaw2_en.htm (accessed 18 April 2025).
![]() Fendt, Walter. Walter Fendt Physics Applets: Kepler's Second Law. 2000. 18 Jan. 2003. 18 Apr. 2025 <https://www.walter-fendt.de/html5/phen/keplerlaw2_en.htm>.
![]() @misc{
Author = "Walter Fendt",
Title = {Walter Fendt Physics Applets: Kepler's Second Law},
Volume = {2025},
Number = {18 April 2025},
Month = {January 18, 2003},
Year = {2000}
}
![]() %A Walter Fendt %T Walter Fendt Physics Applets: Kepler's Second Law %D January 18, 2003 %U https://www.walter-fendt.de/html5/phen/keplerlaw2_en.htm %O application/java ![]() %0 Electronic Source %A Fendt, Walter %D January 18, 2003 %T Walter Fendt Physics Applets: Kepler's Second Law %V 2025 %N 18 April 2025 %8 January 18, 2003 %9 application/java %U https://www.walter-fendt.de/html5/phen/keplerlaw2_en.htm 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
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