The stroboscope uses an electric motor and a digital camera to capture stunning photographs of objects in motion. The camera is set to take long exposures while a slotted disk spins in front of its lens. Each time the slot spins past the lens, the camera gets a glimpse of your subject and adds another layer to the image. The resulting photograph is a record of your subject moving through space and time, and these images often reveal beautiful patterns that would otherwise be invisible to us. The original version of the strobe-o-scope is on display at the exploratorium in san francisco, and There is also a diy version that we created for make magazine.