When a horse gallops do all four hooves leave the ground simultaneously? Crank the handle on this miniature movie machine and find out.
In 1872 Leland Stanford, a wealthy railroad baron, bet his friend that all four hooves leave the ground when a horse gallops. He approached experimental photographer Edward Muybridge and asked him to somehow find out with cameras. After much experimentation Muybridge brought 24 cameras to a race track and lined them up side by side. He then attached long threads to each camera's shutter along the track.
As the horse galloped by, the cameras snapped the historic image sequences "Horse in Motion" that are now known as history's first photographic moving pictures.