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单词 polyprism
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polyprism
polyprism n. [after French polyprisme ( A. Ganot Traité élém. de physique expér. et appliquée (ed. 15, 1872) vii. iii. §512. 475, the passage translated in quot. 1873] Obsolete rare a prism made of a series of prisms of the same shape but different (transparent) materials with their bases contiguous, used to demonstrate the different refractive power of different materials.
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the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [noun] > miscellaneous others
pyramid1748
hemihedron1837
pyritohedron1841
adamantoid1850
pyritoid1850
orthoprism1872
orthopyramid1872
polyprism1873
macropyramid1883
shish kebab1966
1873 E. Atkinson tr. A. Ganot Elem. Treat. Physics (ed. 6) vii. iii. §502 That the angle of deviation increases with the refractive index may be shown by means of the polyprism. This name is given to a prism formed of several prisms of the same angle connected at their bases.
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