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 398
city of torsion and tension, the storage of energy, centrifugalforce, momentum, and friction are all concerned in the movement of the sim-ple toy illustrated in Fig. 1; and yet, perhaps, not one in a thousand of thepeople who see the toy realizes the composite nature of its action. Barringthe… … -^-^,
Magic tricks
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