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 484
lled by a regulator. As soon as the disk obtains a speed of ten turns asecond, the regulator maintains this speed with perfect uniformity. The diskmoves in front of the sensitized plate a few millimeters only; then, knowing CHRONOPHO TOOK A PEY. 409 tlie uiigiilcir value of each of the openings,… … FIG. 8.—WALKING MAX, CI.OTUKI) IX WIIIIK, IASSIXO ACKOSS THE FIELD. screen might reflect npon this sensitized plate, during a single exposure, smallquantities of light, which would tend to f(jg the ])Iate. A wall painted withany black jiigment, or even covered Avith black velvet, exposed to the…
Magic tricks
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