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	A number of years ago I saw an exhibit at 
Heureka which consisted, if I recall correctly, 
of a bed of seedlings, bright lamps and 
instruments measuring carbon dioxide (perhaps 
oxygen as well) and a black cover. Visitors could 
see, on gauges, the effect of minus the black 
cover and plus the black cover on carbon dioxide 
emissions (as a measure of photosynthesis). As I 
recall visitors (attendees at the first 
international science museum congress) had some 
difficulty interpreting the results.

You might want to contact Mikko Myllykoski 
([log in to unmask]) for more 
information.

Martin
>
>Excuse crosspostings.
>
>
>
>Is there anyone out in exhibit land who has made or seen a good exhibit on
>photosynthesis?
>
>We are planning to rebuild our forestry exhibition and need to cover this
>topic.
>
>Regards
>
>Olle
>
>
>
>_________________________
>
>Olle Nordberg
>
>Director of Exhibitions
>
>Teknikens Hus
>
>S-97187 Luleå
>
>SWEDEN
>
>tel +46 920 492 212
>
>fax +46 920 492 202
>
>mob +46 705 772 212
>
>www.teknikenshus.se <http://www.teknikenshus.se/>
>
>
>
>
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-- 
Martin Weiss, Ph.D
Vice President, Science
New York Hall of Science
47-01 111 th Street
Corona, New York 11368
718 699 0005 x 356

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More information about the Informal Science Education Network and the
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message  SIGNOFF ISEN-ASTC-L in the BODY of a message to
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