On this day in 1878 – Eadweard Muybridge took a series of photographs to prove that all four feet of a horse leave the ground when it gallops (animation pictured), which became the basis of motion pictures. 
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On this day in 1878 – Eadweard Muybridge took a series of photographs to prove that all four feet of a horse leave the ground when it gallops (animation pictured), which became the basis of motion pictures. 
