2. (Opt.) A polyscope, or multiplying glass. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
polyhedrons — pol·y he·dron || ‚pÉ‘lɪ hɪËdrÉ™n /‚pÉ’l n. solid figure having many plane surfaces (usually more than six) … English contemporary dictionary
Primatte chromakey technology — Primatte is a high end chroma key technology used in motion picture, television and photographic host applications to remove solid colored backgrounds (greenscreen or bluescreen usually) and replace them with transparency to facilitate… … Wikipedia
Magnus Wenninger — in 2009 in his office with many of his models and a visiting theology student Father Magnus J. Wenninger OSB (born Park Falls, Wisconsin, October 31, 1919) is a mathematician who works on constructing polyhedron models, and wrote the first book… … Wikipedia
Hosohedron — An n gonal hosohedron is a tessellation of lunes on a spherical surface, such that each lune shares the same two vertices. A regular n gonal hosohedron has Schläfli symbol {2, n }. Hosohedrons as regular polyhedrons For a regular polyhedron whose … Wikipedia
Kepler, Johannes — born Dec. 27, 1571, Weil der Stadt, Württemberg died Nov. 15, 1630, Regensburg German astronomer. Born into a poor family, he received a scholarship to the University of Tübingen. He received an M.A. in 1594, after which he became a mathematics… … Universalium
Mathematics and art — have a long historical relationship. The ancient Egyptians and ancient Greeks knew about the golden ratio, regarded as an aesthetically pleasing ratio, and incorporated it into the design of monuments including the Great Pyramid,[1] the Parthenon … Wikipedia
high-pressure phenomena — ▪ physics Introduction changes in physical, chemical, and structural characteristics that matter undergoes when subjected to high pressure. pressure thus serves as a versatile tool in materials research, and it is especially important in… … Universalium
Conway polyhedron notation — This example chart shows how 11 new forms can be derived from the cube using 3 operations. The new polyhedra are shown as maps on the surface of the cube so the topological changes are more apparent. Vertices are marked in all forms with circles … Wikipedia
borane — /bawr ayn, bohr /, n. Chem. any of the compounds, both neutral and anionic, of boron and hydrogen with formulas ranging from B2H6 to B20H16. Also called boron hydride. [ < G Boran (1916); see BORON, ANE] * * * ▪ chemical compound Introduction… … Universalium
clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… … Universalium
