The Horse in Motion by Eadweard Muybridge. Noted photographer, Eadweard Muybridge was hired, in 1872, by Leland Stanford a railroad baron and future university founder, to find out if there was moment mid-stride where horses had all hooves off the ground. It took several years but Muybridge delivered having captured a horse, named "Sallie Gardner," owned by Stanford; running at a 1:40 gait over the Palo Alto track, on 19th June 1878. Muybridge used a dozen cameras all triggered one after another with a set of strings.