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Kristie,

Calvin Uzelmeier at the Rochester Musem and Science Center does a really 
good job discussing this topic...

not sure the email, but google the place and i'm sure you'll get it.

Pete
At 03:09 PM 11/14/2005 -0600, you wrote:
>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related institutions.
>*****************************************************************************
>
>You know those spinning tops (old toy) that have the red, yellow and blue 
>disks inside that spin as the top spins?   As the disks spin, the colors 
>change.  Anybody remember these or sell them in their store?
>
>1.   I need an elementary level explanation for why the colors change as 
>they do.
>2.   Anyone have a wholesale source for these tops?
>
>Thanks,
>Kristie, SD Discovery Center
>
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Pete St. John
Exhibit Manager
Museum of the Earth at the Paleontological Research Institution
1259 Trumansburg Road, Ithaca, NY14050

Ph: (607) 273-6623 ext. 28
Fax: (607) 273-6620
Email: [log in to unmask]

Conquering Darkness: The Art of Charles R. Knight
October 21 through April 15
Opening Reception October 28
Member Reception 6-7pm
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Visit us on the Web at: www.museumoftheearth.org and at www.priweb.org

The Museum of the Earth is part of Ithaca's Discovery Trail. Learn more at 
www.discoverytrail.net  

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