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[APD] Mr. Science! Was: Re: plant weights

     And folks say that we scientists are a humourless bunch...

> I used to scare the dickens out of students in freshman chem classes by
> blowing up H2 and H2/O2 mixed balloons.  One faculty member used to do that
> in a chemistry show that was very entertaining, using larger and larger
> balloons.  The night of his greatest glory was when, after doing this
> exactly that, his assistant brought in a weather balloon filled with
> helium.  The first several rows of people immediately scrambled for the back
> of the room.
> -- 
> Liz
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