The young folk's cyclopædia of games and sports ; (1899)
Champlin, John Denison, 1834-1915, Bostwick, Arthur Elmore, 1860-1942, joint author · New York, H. Holt and company · leaf 455
a section of the piano-lid andtop, M and M. The top M will bereflected in the lid M, appearing asthe dotted line just beyond, andthis reflection behaves like a realmirror, so the lid is reflected in it, appearing as the next dotted line.In the same way the reflectionsshown by the other dotted… … Principle of Kaleidoscope. surfaces. Thus eight objects, a, b,a, b, etc., are seen arranged in aregular design, of which only one isreal, the others being reflectionsThe centre of the design is alwaysthe angle between the piano topand lid. By varying this angle, thenumber of reflections, and…
Games · Sports · Card games
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