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Here's a cautionary thought coming from someone who curates a gallery with a laser maze in it (me): the coolness factor of lasers and the difficulty maintaining that coolness is unrelated to any learning outcome usually associated with them. We think we're using lasers in a laser maze to teach people about total internal reflection or Snell's law but everything we do to make the exhibit interesting to look at is related to the scattering of monochromatic, coherent light by suspended particles. There are lots of critical angle-type exhibits that are cheap to build, easy to maintain and don't use lasers at all. The whole laser story is best told with a presentation rather than an exhibit in my opinion.
David Savory
Community Extensions Program Developer and Exhibit Curator
Science World British Columbia
TELUS World of Science
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-----Original Message-----
From: Informal Science Education Network [mailto:[log in to unmask]] On Behalf Of Jon Haavie
Sent: Friday, August 21, 2009 12:53 AM
To: [log in to unmask]
Subject: Laser, mirrors and smoke! How to make it work?
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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Hi,
We have made a sort of laser labyrinth, with adjustable mirrors and smoke. The smoke is used in order for the users to see the laser, the mirrors are used to direct the laser throgh the labyrint. But we've hit a couple of snags that have stopped the development. The mirrors get covered with residue form the smoke, so I had to wipe them off every day or so. Even though we mounted an extraction tube on the table, so the smoke would be sucked out. I know there's different kinds of theatrical smoke, but I've tried a few and they all seem to have the same problem.
Any thoughts?
Best regards,
Mvh. Jon Haavie
----------------------------------------------------------
Prosjektutvikler
Vitensenteret, Norsk Teknisk Museum
http://www.tekniskmuseum.no/
Kjelsåsveien 143, N-0491 Oslo, Norway
Tlf. +47 22 79 60 77, Mob. +47 93 87 77 63
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
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