Phenakistoscopic

A modified form of the phenakistoscope, in which the usual figures of horsemen, &c., are replaced in the revolving disk by a double set of highly-coloured circular arcs, all passing through the centre of motion, and intersecting each other, pair and pair, in such a way that the limbs exhibit a slightly different relation in each successive pair, on the same principle as ordinary phenakistoscopic figures are arranged.

Dear Doctor [Henry G. Wright],—I heard nothing of Mr. [Antoine] Claudet’s paper on the possibility of producing a series of phenakistoscopic figures by means of photography, nor yet of the probability of rendering such appearances more life-like by means of the stereoscope.[…]The phenakistoscopic effect was produced in this wise:—I prepared a kind of paddle-wheel in card-board, with half a dozen floats to it, and upon the front of each of these six floats I pasted one of the stereoscopic pictures—say that intended for the left eye.

Also like his peep show forebears, [Émile] Reynaud was interested in stereoscopic moving pictures. To display them, he reverted to phenakistoscopic technology using two drums, each carrying a separate-eye view of the movement.[…]With the phenakistoscopic disk, the left- and right-eye pictures, because they were vertically stacked, did not have equal radii and did not rotate at quite the same speed.