Magic; stage illusions and scientific diversions, including trick photography (1897)
Hopkins, Albert A. (Albert Allis), 1869-1939, Evans, Henry Ridgely, b. 1861 · London : Low · leaf 483
objective can be uncovered without effect on a sensitized plate, as 468 MAGIC: STAGE ILLUSIONS AND SCIENTIFIC DIVERSIONS. it will receive no light; but if a white bull strongly ilhuninated by the sun if?thrown across the j)lane of this screen, and parallel with it, its image will bereproduced upon… … FIG. 7.—INTERfOR AKRANGEMENT OF THE DARK CHAMBER. Fig. 3 shows the iiarabolic trajectory of a brilliant ball thrown across theface of a dark screen; but it is discontinuous, as exposures were only producedeach fiftieth of a second on account of the number of the openings and thespeed of the…
Magic tricks
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