Photo from Sept. 15, 2008

Photo from Sept. 15, 2008

Alex McElvain/Staff Photographer Senior Andy Mossine mixes two liquids at an MU chemistry lab on Monday. Mossine looks for crystallized precipitate, which can then be used to determine geometric information about substances.

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A look at PS: Gallery's Winter 2010 Exhibition, open from January 5 to March 27. (View slideshow)