Smoke machines

Paul Harrison <paulehar [at] netvigator__com> writes

>Has anyone tried putting a stage/disco smoke generator in a display
>case? I want to see how much some cases leak and from where, but I
>wondered about the residue left behind by the machines.

Based on a recent visit to the Science Museum with my sons, we
learned that liquid nitrogen is used for producing fog on stage. I
would assume that nitrogen would not leave any residue? An open
container of liquid nitrogen will simply boil away.

Bill Minter


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                  Conservation DistList Instance 16:16
                  Distributed: Friday, August 30, 2002
                       Message Id: cdl-16-16-006
                                  ***