Timing for Animation, 40th Anniversary Edition, 3rd Edition
by Harold Whitaker, Tom Sito, John Halas
Strobing
Strobing is an effect which is an integral part of the mechanism of the cinema. Indeed the stroboscope, invented in 1832, was the first device used to present the illusion of a moving picture. The reflections of images on a spinning disc were viewed through slits around the edge of the disc so that a series of static images were seen in quick succession. A similar device, using the same principle, was the zoetrope in which paper strips were viewed through slits in a rotating cylinder.
Strobing is liable to occur in the movement of an object, which has a number of equally spaced similar elements. Some examples are the rungs of a ladder or the spokes of a wheel.
If a drawing of a ladder has rungs drawn 1 inch apart and the ladder starts ...
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