Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 123
hat its flame will not beabove the upper edge of the mirrors, ex-actly over the spot 1. Note the positions of the images of thecandle seen in the mirrors. Put pegs intothe holes behind the mirrors in such posi-tions that to an observer placed in frontof the mirrors, so as to see the images inthe… … REGULAR REFLECTION OF LIGHT, 111 112. The Kaleidoscope.—The preceding passages givean explanation of the kaleidoscope, No. XXVI, with whichmost oeautiful effects of endless variety can be obtained.The kaleidoscope uses bits of colored glass instead of acandle flame, and sometimes has three mirrors…
Physics
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