Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 456
ball will disappear from the page. The illustration shows us a very curious optical ilhision,and one very easy to practise. Roll up a sheet of paper,and look through it» as through a telescope, with the DIVIDED TELESCOPE. 99 right eye, keeping both eyes open. Then place the left handopen palm… … Among optical illusions there are a great number thatmay be produced by means of mirrors. The dividedtelescope is an example. The apparatus, raised on a firmstand, allows of one apparently seeing an object througha stone or other opaque object, as shown in the cut above. lOO OPTICAL ILLUSIONS. The…
Scientific recreations
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
