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Hello Reyes:

First of all, our condolences from New York City to Madrid.  I hope your
city heals from its tragedy.

There is a very good activity that we've been planning to do, but
haven't yet tried, about how light can carry information.

Take a cardboard box like a shoe box, cut a hole in both ends, and cover
one end with reflective mylar.  Reflecting a light off the mylar side
into a photosensor, you can modulate the light beam by talking or
singing into the open end of the shoe box.  

From what I have heard from people who have tried this, it is a very
good demonstration of how you modulate a signal to carry information,
and very popular with visitors.

I have heard about others doing this activity, and the details may be
available somewhere.  If you would like more information, I can try to
find it for you.  We will be prototyping it here soon.

Eric Siegel
Director of Planning
   & Program Development
Connections Project Director
New York Hall of Science
47-01 111th Street
Queens, NY 11368
[log in to unmask] 
www.nyscience.org

> -----Original Message-----
> From: Informal Science Education Network 
> [mailto:[log in to unmask]] On Behalf Of Reyes Esparcia
> Sent: Tuesday, March 30, 2004 11:33 AM
> To: [log in to unmask]
> Subject: Telecommunications activities
> 
> 
> ISEN-ASTC-L is a service of the Association of 
> Science-Technology Centers Incorporated, a worldwide network 
> of science museums and related institutions.
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> 
> Hello to everyone:
> 
> I'm posting this message from Spain. From the 
> Telecommunication Museum (Madrid). My question is about 
> activities related to Telecommunications and its 
> understanding. I have found a lot of activities related to 
> chemistry or physics, but I'd rather would like to teach more 
> about Telecommunications stricktly speaking.
> 
> I would really appreciate any help or idea. Every track will 
> be very welcome.
> 
> Thank you very much in advance
> 
> Reyes Esparcia
> 
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