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A toy kaleidoscope
A toy kaleidoscope
A comparison of the mirror constructions of Kircher (left) and Bradley (right)
A comparison of the mirror constructions of Kircher (left) and Bradley (right)
Patterns when seen through a kaleidoscope tube
Patterns when seen through a kaleidoscope tube
Polyangular Kaleidoscope of R. B. Bate (with adjustable reflector angles), as illustrated in Treatise on the Kaleidoscope (1819)
Polyangular Kaleidoscope of R. B. Bate (with adjustable reflector angles), as illustrated in Treatise on the Kaleidoscope (1819)
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Many animals are approximately mirror-symmetric, though internal organs are often arranged asymmetrically.
Many animals are approximately mirror-symmetric, though internal organs are often arranged asymmetrically.
Seen from the side, the Taj Mahal has bilateral symmetry; from the top (in plan), it has fourfold symmetry.
Seen from the side, the Taj Mahal has bilateral symmetry; from the top (in plan), it has fourfold symmetry.
Clay pots thrown on a pottery wheel acquire rotational symmetry.
Clay pots thrown on a pottery wheel acquire rotational symmetry.