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Animation basics: The optical illusion of motion - TED-Ed

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How do animators make still images come to life? Are the images really moving, or are they merely an optical illusion? TED-Ed takes you behind the scenes to reveal the secret of motion in movies.

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What phrase is attributed to the English-Swiss physicist Peter Mark Roget, who in the early 19th century used it to describe a particular ‘defect of the eye’ that resulted in a moving object appearing to be still when it reached a certain speed?

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