Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 450
also con- MR. THOMPSONS APPARATUS. 93 firmed by a microscopic photograph from Lackerbauerscollection, magnified 3,000 diameters, in which a blackcentral point is seen in the centre of each circle, a certainreflection of the luminous source reproduced in the focusof each of the small demi-spheres… … Mr. Thompsons optical illusion. Give a circular movement to these figures, andthe circleswill appear to turn round. Mr. Silvanus P. Thompson, Professor of Physics atUniversity College, Bristol, has recently presented theFrench Society of Physical Science with a curious exampleof optical illusion,…
Scientific recreations
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![An illustration from Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] (1906)](https://img.insideoutlibrary.com/img/200/ia-cu31924022817674-160-45.webp)
