Experiments in psychical science : levitation, contact, and the direct voice (1919)
Crawford, W. J. (William Jackson), 1880-1920 · London : Watkins ; New York : E. P. Dutton & company · leaf 60
Fig. 13. The weighing-machine will indicate increasedweight = W. This is the case which occurs when lightarticles are levitated. Case II Two oppositely directed forces acting as shownat the end of the cantilever. EXPERIMENTS ON REACTION 47 (a) If W is greater than P, the weighing-machinewill… … Fig. 14. This (b) is what occurs when the psychic canti-lever rests on top of the spring balance (seeExperiments 7 and 8). Case III When the cantilever presses downwards onthe floor with a vertical force W, the weighing-machine will indicate decreased weight = W.
Parapsychology -- Research · Spiritualism
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