If you’ve never seen a Tesla coil in person, it’s a remarkable experience. Purple plasma flashes in unpredictable, wide-reaching bolts. The sound cracks with more fearsomeness than a whip. The air fills with the sterile acridity of ozone. The effect is equal parts frightening and beautiful; this machinery can use enough voltage to carbonize your flesh right down to the bone, yet some self-destructive impulse tells you to look closer. Alexandre Burton plays with this very impulse in his installation, Impacts. The exhibition features several Tesla coils that hang from the ceiling. They fire, not against a cage or predictable grounding surface, but a delicate pane of glass, so the viewer can appreciate the plasma filaments like a framed piece of art or a caged lion.