Evans, Henry Ridgely, b. 1861 · Chicago : The Open court Pub. Co.; [etc., etc.] · leaf 364
Fig. 2. and the head is found to have disappeared, leaving in its place a handfulof ashes. This singular illusion depeiids upon the well-known principle, commonto optics as to mechanics, that the angle of reflection is equal to the angleof incidence. Thus, if a person standing at the point a, in…
Magic tricks
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