A student using the PLM. A nylon fiber from a painting viewed through PLM.

The department has two polarized light microscopes (PLM) (Leica DM EP) that students can use to examine materials that interact with polarized light.  PLM, for example, has been used in both The Art Conservation of Paintings (Intersession) and Science and Art (Intersession) to identify fibers found in a painting's canvas.  The PLM has also been used in Independent Study (CHM 500/501).

The PLMs were obtained thanks to a grant from the Spectroscopy Society of Pittsburgh.