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written by Julio Gea-Banaloche
This animation shows the quantum analogy of a classical bouncing ball moving in a gravitational field, without dissipation. The video shows the wave packet motion next to the ball.  A graph of the expectation value of the quantum ball versus time is provided that illustrates the dispersion and later reforming of the quantum wave packet.
Subjects Levels Resource Types
Quantum Physics
- Probability, Waves, and Interference
- Scattering and Unbound Systems
- Upper Undergraduate
- Graduate/Professional
- Lower Undergraduate
- Audio/Visual
= Movie/Animation
Categories Intended Users Ratings
- Background
- Learners
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Access Rights:
Free access
© 1998 Julio Gea-Banaloche
quantum barrier, quantum bounce, wavepacket
Record Creator:
Metadata instance created May 13, 2008 by Christopher Bares
Record Updated:
May 13, 2008 by Bruce Mason
Last Update
when Cataloged:
December 18, 1998

Video formats

Author: Oskar Xofre
Posted: August 9, 2013 at 12:17PM

I would love to see the videos in your Library, including the ones from the Perimeter Institute; but, the video format is not supported by my iPad. Flash format is not supported by Apple.
Would it be and incredible task to get some students to quickly make copies of these videos in other formats for Apple an Android machines? It's an easy task, it would also require  to slightly modify your web page to include the choices of format.
Unless all these material is available in another site , for otherr fromats.



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Record Link
AIP Format
J. Gea-Banaloche, (1998), WWW Document, (
J. Gea-Banaloche, A Quantum Bouncing Ball (1998), <>.
APA Format
Gea-Banaloche, J. (1998, December 18). A Quantum Bouncing Ball. Retrieved May 18, 2024, from
Chicago Format
Gea-Banaloche, Julio. A Quantum Bouncing Ball. December 18, 1998. (accessed 18 May 2024).
MLA Format
Gea-Banaloche, Julio. A Quantum Bouncing Ball. 1998. 18 Dec. 1998. 18 May 2024 <>.
BibTeX Export Format
@misc{ Author = "Julio Gea-Banaloche", Title = {A Quantum Bouncing Ball}, Volume = {2024}, Number = {18 May 2024}, Month = {December 18, 1998}, Year = {1998} }
Refer Export Format

%A Julio Gea-Banaloche %T A Quantum Bouncing Ball %D December 18, 1998 %U %O video/quicktime

EndNote Export Format

%0 Electronic Source %A Gea-Banaloche, Julio %D December 18, 1998 %T A Quantum Bouncing Ball %V 2024 %N 18 May 2024 %8 December 18, 1998 %9 video/quicktime %U

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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.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

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