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I am interested in adding an exhibit in our space lab that allows visitors
to view cosmic ray tracks in a cloud chamber (just in time for the 100
year anniversary of the discovery of cosmic rays in 1912). I was hoping to
get some feedback from some of you who have experience with such an
exhibit. Specifically, 
- How does your detector work? (I am familiar with the dry ice and alcohol
setup but I am not sure how feasible that would be to set up as a more or
less continually running exhibit for visitors)
- Are there many challenges in keeping it running?
- Are there special considerations as to lighting?
- Are visitors interested in the exhibit (any tips on signage?)?
- Any other information that might be good to know...

Thank you very much for your help!
Sincerely, 
Simon

.................................................................................................................
Simon Strasser, PhD
Staff Scientist
Science North   100 Ramsey Lake Rd, Sudbury, Ontario   CANADA   P3E 5S9
Phone: (705) 522 3701 ext 383
Fax:    (705) 523 1283
[log in to unmask]                                  
http://sciencenorth.ca

Science North is GOING WILD on April 2!   And you can too.   Just ask me
how.
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