Light Echoes is a digital printer of sorts—but only by the most conceptual definition. It’s a high-powered laser attached to a wheeled boom, which rolls along the train tracks at a fixed speed. The laser projects light onto the surrounding landscape, one pixel at a time. In person, it looks like a brief trail of LED light. But captured in long-exposure photographs (using a Red EPIC camera), the projections form cohesive images—anything from a pattern to a quote from Walt Whitman. The contraption literally prints in light, thanks to train infrastructure laid down decades ago. According to Koblin, who emailed from the train’s Minneapolis stop last night, it casts “visual echoes of the train’s presence cast upon the landscape.”
via Gizmodo
