Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 415
rfaces on all sides of the wire in the visual range passone into the other, and becomemingled. In objects composedof black and white squares, likethose of a draught-board, theangles of the white squares joinby irradiation, and separate theblack squares. 3. Straight lines appear interrupted. If a… … Disc which appears uniformly grey byreason of its rotation. point of the retina is affected by a light which undergoesperiodical and regular variations, the duration of the period beingsufficientlyshort, thereresults a continuous impres-sion, like that which wouldbe produced if thelightgivenduring…
Scientific recreations
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![An illustration from The Antiquarian [serial] (1897)](https://img.insideoutlibrary.com/img/200/ia-antiquarianseria01colu-182-82.webp)
