A fire whirl in a Tempest Table Top Torch, colored by ‘Rainbow Crystals’: Copper Sulfate, Ammonium Chloride and crystalline silica.

A fire whirl in a Tempest Table Top Torch, colored by ‘Rainbow Crystals’: Copper Sulfate, Ammonium Chloride and crystalline silica.

By Christopher O’Brien, Gamal Elbialy, Ian Macfarlane, William Olson for Fall 2015 Team First.
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