Sometimes it’s not what you see, it’s how you see.  This print shows various explosives which look like boring white powders to the naked eye, but become gorgeous when seen with a process called Polarized Light Microscopy (PLM). 

The organic explosives in this print include ammonium nitrate (NH4NO3), cholesterol acetate (CA), TNF, dintironapthalene (DNN), mononitronapthalene (MNN), paranitrophenol (NP), picric acid (PA), trinitrobenzene (TNB), and trinitrotoluene (TNT), all acquired by Jessica Ye, a current MD/PhD candidate at Yale.