The rhombic icosahedron is a zonohedron made up of 20 congruent rhombs. It can be derived from the rhombic triacontahedron by removing 10 middle faces. Even though all the faces are congruent, the rhombic icosahedron is not face-transitive.
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This oxygenated alkaloid was isolated by Wertheim from C. maculatum. It crystallises in colourless leaflets, has a coniine-like odour, can be sublimed, and is strongly basic. It crystallises readily from ether. The salts are crystalline; the aurichloride small rhombs or prisms, mp.
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480 pp. . The color pattern is variable, depending on the color of the rocks and soil of the habitat. The snake's ground color may be pink, brown, gray, yellow or nearly white, and speckled with black and white. The pattern (if present) may consist of rhombs, bands or blotches.
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As a quilting pattern it also has many other names including cubework, heavenly stairs, and Pandora's box. It has been suggested that the tumbling blocks quilt pattern was used as a signal in the Underground Railroad: when slaves saw it hung on a fence, they were to box up their belongings and escape. See Quilts of the Underground Railroad.. In these decorative applications, the rhombi may appear in multiple colors, but are typically given three levels of shading, brightest for the rhombs with horizontal long diagonals and darker for the rhombs with the other two orientations, to enhance their appearance of three-dimensionality. There is a single known instance of implicit rhombille and trihexagonal tiling in English heraldry – in the Geal/e arms.
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Kutnohorite occurs as aggregates of bundled blades of white through rose pink to light brown crystals. Also as simple rhombs with curved faces, polycrystalline spherules and in massive and granular habits. It has perfect rhombohedral cleavage, typical of carbonates. It is brittle with a subconchoidal fracture and it is quite soft, with hardness to 4, between calcite and fluorite.
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Acrantophis madagascariensis, like others in the family, dispatch their prey by constriction. The color pattern consists of a pale reddish-brown ground color mixed with gray, overlaid with a pattern dorsal rhombs outlined with black or brown. Sometimes this creates a vague zigzag impression. The sides are patterned a series of black ovoid markings with reddish blotches, often bordered or centered with white.
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Coniine solidifies into a soft crystalline mass at −2 °C. It slowly oxidizes in the air. The salts crystallize well and are soluble in water or alcohol. The hydrochloride, B•HCl, crystallizes from water in rhombs, mp. 220 °C, [α]20°D +10.1°; the hydrobromide, in needles, mp. 211 °C, and the D-acid tartrate, B•C4H6O6•2 H2O, in rhombic crystals, mp.
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Crystals are monoclinic. They may have a characteristic coffin-shaped habit, but may also form simple rhombic prisms. Frequently, a crust of fine crystals will form with only the ends of the rhombs visible, making the crystals look like wedges. They have a perfect cleavage parallel to the plane of symmetry, on which the lustre is markedly pearly; on other faces the lustre is of the vitreous type.
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The Welf possessions were elevated to the Duchy of Brunswick-Lüneburg (also Brunswick and Lunenburg) in 1235. This duchy continued to use the old Saxon coat-of-arms showing the Saxon Steed in argent on gules, while the Ascanians adopted for the younger Duchy of Saxony their family colours, a barry of ten, in sable and or, covered by a crancelin of rhombs bendwise in vert, symbolising the Saxon dukedom.
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The church lies at the northeastern foot of the Trapezitsa and Tsarevets hills, on the right bank of the Yantra River, outside the city's medieval fortifications. Architecturally, it has a pentahedral apse and a cross-domed design with a narthex and a fore-apse space. It was once part of a large monastery and belonged in its southeastern part. The church's exterior is decorated with blind arches and colourful ornaments: glazed rosettes, suns, rhombs and other painted figures.
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Oxford English Dictionary (2nd edition) 1989, Oxford, Oxford University Press Jet is either black or dark brown, but may contain pyrite inclusions,Pye, K. (1985) Electron microscope analysis of zoned dolomite rhombs in the Jet Rock Formation (Lower Toarcian) of the Whitby area, U.K., Geological Magazine, volume 122, pp. 279–286, Cambridge University Press, which are of brassy colour and metallic lustre. The adjective "jet-black", meaning as dark a black as possible, derives from this material.
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The body whorl, with neither folds nor tubercles, is as large as all the others together, and striated at the base. The ground color of this shell is whitish, and there are delineated brown undulating or zigzag lines, more or less numerous, which descend from the top to the base of the whorls. Sometimes other bands upon the upper whorls form delicate rhombs. The aperture is rather narrow, attenuated at its lower extremity, and as long as the other whorls united.
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These matching rules can be imposed by decorations of the edges, as with the Wang tiles. Penrose's tiling can be viewed as a completion of Kepler's finite Aa pattern. A non- Penrose tiling by pentagons and thin rhombs in the early 18th-century Pilgrimage Church of Saint John of Nepomuk at Zelená hora, Czech Republic Penrose subsequently reduced the number of prototiles to two, discovering the kite and dart tiling (tiling P2 below) and the rhombus tiling (tiling P3 below). The rhombus tiling was independently discovered by Robert Ammann in 1976.
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Close up of a single arm pantograph on a British Rail Class 333. Diagram of parts of a pantograph from ICE S Pantographs may have either a single or a double arm. Double-arm pantographs are usually heavier, requiring more power to raise and lower, but may also be more fault-tolerant. On railways of the former USSR, the most widely used pantographs are those with a double arm ("made of two rhombs"), but since the late 1990s there have been some single-arm pantographs on Russian railways.
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Frequently the term aperiodic was just used vaguely to describe the structures under consideration, referring to physical aperiodic solids, namely quasicrystals, or to something non-periodic with some kind of global order. The use of the word "tiling" is problematic as well, despite its straightforward definition. There is no single Penrose tiling, for example: the Penrose rhombs admit infinitely many tilings (which cannot be distinguished locally). A common solution is to try to use the terms carefully in technical writing, but recognize the widespread use of the informal terms.
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In order to strengthen his claim Bernard adopted the Saxe-Wittenbergian coat-of- arms for Saxe-Lauenburg. The coat of arms shows in the upper left quarter the Ascanian barry of ten, in Or and sable, covered by a crancelin of rhombs bendwise in vert.The House of Wettin also adopted the barry of ten with the crancelin as its coat-of-arm, when it gained Saxe-Wittenberg, which is why the barry reappears in the arms of many (formerly) Wettin-ruled states. The crancelin symbolises the Saxon ducal crown.
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Athenaeus (The Deipnosophists xiv.38) quotes a passage from a now-lost play, Semele, by Diogenes the Tragedian, describing an all-percussion accompaniment to some of these rites: :And now I hear the turban-wearing women, :Votaries of th' Asiatic Cybele, :The wealthy Phrygians' daughters, loudly sounding :With drums, and rhombs, and brazen- clashing cymbals, :Their hands in concert striking on each other, :Pour forth a wise and healing hymn to the gods.Athenaeus 1854, 3:1015. An altogether darker picture of the function of this noise music is painted by Livy in Ab urbe condita xxxix.
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17 [dorsal] scale-rows on the neck. 21 or 23, rarely 19, at mid-body, imbricate and strongly keeled ; Ventrals 225–253 for specimens from the coasts of India and Gulf of Siam; 247-278 for 11 examples from Cap St. Jacques and S. Annam (fide Bourret, p. 25). Hemipenis forked near the tip; it is spinose throughout, the spines being of moderate size, closely set and becoming slightly larger as they approach the proximal end. Olive above, yellowish or white beneath, with black dorsal spots or rhombs which extend round the body to form complete bands in the young; intermediate dorsal spots or bars are usually present.
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Various predominant taphonomic modes have been suggested as mechanisms that resulted in the exceptional preservation of the Gunflint Chert microfauna. Examples of these taphonomic modes include organic residue preservation, fine-grain pyritization, coarse-grain pyritization, carbonate association, and hematite preservation. In organic residue preservation, a film of light-to-dark brown organic material outlines microorganisms, acting as a stain and preserving filaments, spore-like bodies, and carbonate rhombs within chert. Fine—grain pyritization is the most common type of preservation in the Gunflint Cherts, in which association of fine- grained (μm scale) pyrite with organic matter preserves the morphology of filamentous and spheroid microorganisms.
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For a general input polarization, the net effect of the rhomb is identical to that of a birefringent (doubly-refractive) quarter-wave plate, except that a simple birefringent plate gives the desired 90° separation at a single frequency, and not (even approximately) at widely different frequencies, whereas the phase separation given by the rhomb depends on its refractive index, which varies only slightly over a wide frequency range (see Dispersion). Two Fresnel rhombs can be used in tandem (usually cemented to avoid reflections at their interface) to achieve the function of a half-wave plate. The tandem arrangement, unlike a single Fresnel rhomb, has the additional feature that the emerging beam can be collinear with the original incident beam.
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1020 complex schemes where "bands of gold outline the bold, squares circles, ellipses, and rhombs that enclose the figures", and inscriptions are incorporated in the design explicating its complex theological symbolism. This style was to be very influential on Romanesque art in several media.Dodwell, 151–153; Garrison, 16-18 Echternach Abbey became important under Abbot Humbert, in office from 1028 to 1051, and the pages (as opposed to the cover) of the Codex Aureus of Echternach were produced there, followed by the Golden Gospels of Henry III in 1045–46, which Henry presented to Speyer Cathedral (now Escorial), the major work of the school. Henry also commissioned the Uppsala Gospels for the cathedral there (now in the university library).
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GR-AOdo Ms. 319, fol. 18v) The diagram consist of 4 separated X shaped chains or crosses, each of them have a major circle in the center for the pitch class (phthongos) which connects the two branches on the left (or on the right side) of the cross. For the beginning it is enough to understand, that the four crosses are ascribed to the phthongos at the crossing point like protos, devteros, tritos and which correspond to the four peripheral circles of the Koukouzelian wheel. They can also be regarded from a different angle as four rhombs which connect two neighbouring phthongoi at the crossing point, because the phthongoi on the top and on the bottom between two crosses meet within each rhomb.
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The coat of arms as used in 1605, quartered, with quarter 1 and 4 showing the Ascanian barry of ten, in or and sable, covered by a crancelin of rhombs (they are not shown in this undetailed copy) bendwise in vert (the crancelin symbolises the Saxon ducal crown),The House of Wettin also adopted this coat- of-arms, when it gained Saxe-Wittenberg in 1422, which is why the Ascanian barry of ten reappears in the arms of many (formerly) Wettin-ruled states. quarter 2 in azure, showing an eagle crowned in or (Palgraviate of Saxony), and quarter 3 in argent, showing three water-lily leaves in gules, representing the County of Brehna. The title of Duke of Lauenburg derives from the Duchy of Saxe-Lauenburg, which, since its foundation in 1269, was ruled in succession by 29 dukes from six dynastic houses and lines, and by an additional four dukes from a temporary dynastic branch line (Anna Maria Franziska of Saxe-Lauenburg, the first would-be duchess regnant, was kept from inheriting the duchy by male rulers of neighbouring states). The duchy was held by various countries, including France from 1803 to 1805 and from 1810 to 1814, Prussia from 1805 to 1806, and Westphalia from 1806 to 1810.
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