Date: Sun, 6 Nov 2005 17:06:02 -0800 (PST)

Author: S Ryan

Subject: Re: Optical illusion

Post:

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http://www.patmedia.net/marklevinson/cool/cool_illusion.html

Its not the one you're talking about, but a friend just sent it to me today and I thought I'd share.

Samantha

Richard Berg wrote:

Bob,

I know, because I put it there. It is called the "rinsing illusion." If
you go to:

http://www.physics.umd.edu/lecdem/services/demos/demoso4/o4-25.htm

you will find a description with references.

Not only that, you can print out the two sides of the gizmo so that you
can do the trick. There is also an instruction sheet. All you need is
the parts printed on paper, a pair od scissors, a short piece of coffee
stirrer, and a stapler.

Let me know if you have other questions.

Best wishes,

Dick

On Fri, 4 Nov 2005, Robert DeSerio wrote:

> Anyone know the name of the optical illusion that was in the PIRA resource
> room
> at the Utah AAPT meeting? The apparatus was a 2" or so disc of 24
> alternating black
> and white pie-shaped pieces. When moved in circular oscillations, it showed
> a gray
> circle. Any references would be appreciated as well.
>
> Thanks,
> Bob
>
> _______________________________________________________
>
> Robert DeSerio, Ph.D. Ph. (352) 392-1690
> Director, Instructional Labs Fax (352) 392-0524
> University of Florida Department of Physics
>

***********************************************************************
Dr. Richard E. Berg, Professor of the Practice
Director, Physics Lecture-Demonstration Facility
U.S. mail address:
Department of Physics
University of Maryland
College Park, MD 20742-4111
Phone: (301) 405-5994
FAX: (301) 314-9525
e-mail reberg@umd.edu
www.physics.umd.edu/lecdem
***********************************************************************



---------------------------------
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http://www.patmedia.net/marklevinson/cool/cool_illusion.html

 

Its not the one you're talking about, but a friend just sent it to me today and I thought I'd share.

 

Samantha

Richard Berg <reberg@physics.umd.edu> wrote:


Bob,

I know, because I put it there. It is called the "rinsing illusion." If
you go to:

http://www.physics.umd.edu/lecdem/services/demos/demoso4/o4-25.htm

you will find a description with references.

Not only that, you can print out the two sides of the gizmo so that you
can do the trick. There is also an instruction sheet. All you need is
the parts printed on paper, a pair od scissors, a short piece of coffee
stirrer, and a stapler.

Let me know if you have other questions.

Best wishes,

Dick

On Fri, 4 Nov 2005, Robert DeSerio wrote:

> Anyone know the name of the optical illusion that was in the PIRA resource
> room
> at the Utah AAPT meeting? The apparatus was a 2" or so disc of 24
> alternating black
> and white pie-shaped pieces. When moved in circular oscillation!
s, it
showed
> a gray
> circle. Any references would be appreciated as well.
>
> Thanks,
> Bob
>
> _______________________________________________________
>
> Robert DeSerio, Ph.D. Ph. (352) 392-1690
> Director, Instructional Labs Fax (352) 392-0524
> University of Florida Department of Physics
>

***********************************************************************
Dr. Richard E. Berg, Professor of the Practice
Director, Physics Lecture-Demonstration Facility
U.S. mail address:
Department of Physics
University of Maryland
College Park, MD 20742-4111
Phone: (301) 405-5994
FAX: (301) 314-9525
e-mail reberg@umd.edu
www.physics.umd.edu/lecdem
***********************************************************************



Yahoo! FareChase - Search multiple travel sites in one click.




--0-1795335905-1131325562=:63782--
From urs.lauterburg@phim.unibe.ch Mon Nov 7 16:22:16 2005

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