Final answer:
Eadweard Muybridge's 'The Horse in Motion' photograph was created to prove that a horse lifts all four feet off the ground during a gallop, resolving a debate and showcasing advancements in high-speed photography and the study of motion.
Step-by-step explanation:
The function of Eadweard Muybridge's photograph 'The Horse in Motion' was primarily to settle a dispute Leland Stanford had. Stanford, a prominent businessman, tycoon, and racehorse owner, was curious to know if a horse lifts all four feet off the ground during a gallop. Muybridge used high-speed photography to capture the horse, 'Sallie Gardner,' in action, proving that horses do indeed lift all four hooves off the ground at the same time during certain phases of their gallop. This set of photographs not only served to resolve this particular debate but also demonstrated technological advancements in photography such as faster shutter speeds allowing for detailed studies of dynamics in motion. This was a significant contribution to the scientific study of animal locomotion and the development of early motion pictures.