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Triodetic Dome
Triodetic dome is a partial dome structure that is similar but different from geodesic dome in that it is not a full sphere. Examples * Bloedel Floral Conservatory, Vancouver British Columbia, Canada * Rainbow Stage, Winnipeg, Manitoba, Canada * Cinesphere, Toronto, Ontario, Canada * Turtle Dome (Strongheart Recreation Center), Grand Travers, Michigan, US * Meadowbank Gold Project, Kivalliq District, Nunavut, Canada See also *Cloud Nine (tensegrity sphere) *Concrete dome * Domed city * Fullerenes, molecules which resemble the geodesic dome structure *Geodesic airframe *Geodesic grid * Geodesic tents * Gridshell *Hoberman sphere *Hugh Kenner, who wrote ''Geodesic Math and How to Use It'' *Monolithic dome *Pentakis dodecahedron * Radome *Shell structure *''Silent Running'' 1972 science fiction film prominently featuring geodesic domes. *'' Sindome'' An online Cyberpunk RPG that takes place in a giant geodesic dome. *Space frames *Stepan Center * Synergetics *Truncated icosahed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dome
A dome () is an architectural element similar to the hollow upper half of a sphere. There is significant overlap with the term cupola, which may also refer to a dome or a structure on top of a dome. The precise definition of a dome has been a matter of controversy and there are a wide variety of forms and specialized terms to describe them. A dome can rest directly upon a Rotunda (architecture), rotunda wall, a Tholobate, drum, or a system of squinches or pendentives used to accommodate the transition in shape from a rectangular or square space to the round or polygonal base of the dome. The dome's apex may be closed or may be open in the form of an Oculus (architecture), oculus, which may itself be covered with a roof lantern and cupola. Domes have a long architectural lineage that extends back into prehistory. Domes were built in ancient Mesopotamia, and they have been found in Persian architecture, Persian, Ancient Greek architecture, Hellenistic, Ancient Roman architecture, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fullerene
A fullerene is an allotrope of carbon whose molecule consists of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms. The molecule may be a hollow sphere, ellipsoid, tube, or many other shapes and sizes. Graphene (isolated atomic layers of graphite), which is a flat mesh of regular hexagonal rings, can be seen as an extreme member of the family. Fullerenes with a closed mesh topology are informally denoted by their empirical formula C''n'', often written C''n'', where ''n'' is the number of carbon atoms. However, for some values of ''n'' there may be more than one isomer. The family is named after buckminsterfullerene (C60), the most famous member, which in turn is named after Buckminster Fuller. The closed fullerenes, especially C60, are also informally called buckyballs for their resemblance to the standard ball of association football ("soccer"). Nested closed fullerenes have been named ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silent Running
''Silent Running'' is a 1972 American environmental-themed apocalyptic and post-apocalyptic fiction, post-apocalyptic science fiction film. It is the directorial debut of Douglas Trumbull, and stars Bruce Dern, Cliff Potts, Ron Rifkin, and Jesse Vint. Plot In the future, all plant life on Earth is becoming extinct. As many specimens as possible have been preserved in a series of enormous greenhouse-like geodesic domes attached to large spaceships, forming part of a fleet of American Airlines space freighters, currently just outside the orbit of Saturn. Freeman Lowell, one of four crewmen aboard, is the resident botanist and ecologist on one of these ships, the ''Valley Forge.'' He carefully maintains a variety of plants for their eventual return to Earth and the reforestation of the planet. He spends most of his time in the domes, cultivating the crops and attending to the animal life. The crew of each ship receives orders to jettison and destroy their domes and return the frei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radome
A radome (a portmanteau of radar and dome) is a structural, weatherproof enclosure that protects a radar antenna (radio), antenna. The radome is constructed of material transparent to radio waves. Radomes protect the antenna from weather and conceal antenna electronic equipment from view. They also protect nearby personnel from being accidentally struck by quickly rotating antennas. Radomes can be constructed in several shapes spherical, geodesic dome, geodesic, planar, etc. depending on the particular application, using various construction materials such as fiberglass, polytetrafluoroethylene, polytetrafluoroethylene (PTFE)-coated fabric, and others. When found on fixed-wing aircraft with forward-looking radar, as are commonly used for object or weather detection, the nose cones often additionally serve as radomes. On aircraft used for airborne early warning and control (AEW&C), a rotating radome, often called a "rotodome", is mounted on the top of the fuselage for 360-degr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentakis Dodecahedron
In geometry, a pentakis dodecahedron or kisdodecahedron is the polyhedron created by attaching a pentagonal pyramid to each face of a regular dodecahedron; that is, it is the Kleetope of the dodecahedron. It is a Catalan solid, meaning that it is a dual of an Archimedean solid, in this case, the truncated icosahedron. Cartesian coordinates Let \phi be the golden ratio. The 12 points given by (0, \pm 1, \pm \phi) and cyclic permutations of these coordinates are the vertices of a regular icosahedron. Its dual regular dodecahedron, whose edges intersect those of the icosahedron at right angles, has as vertices the points (\pm 1, \pm 1, \pm 1) together with the points (\pm\phi, \pm 1/\phi, 0) and cyclic permutations of these coordinates. Multiplying all coordinates of the icosahedron by a factor of (3\phi+12)/19\approx 0.887\,057\,998\,22 gives a slightly smaller icosahedron. The 12 vertices of this icosahedron, together with the vertices of the dodecahedron, are the vertices o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monolithic Dome
A monolithic dome (from Greek mono- and -lithic, meaning "one stone") is a thin-shell structure cast in a one-piece form. The form may be permanent or temporary and may or may not remain part of the finished structure. Monolithic domes are a form of monolithic architecture. History The igloo may be the earliest form of monolithic dome. While it is constructed of blocks of compressed snow, these blocks melt and re-freeze to form a strong, homogeneous structure. The dome-like shape of the igloo exhibits the two major advantages of a dome-shaped structure: great strength, and good insulation. The strength is due to the natural strength of the arch, and the insulation is due to the minimal surface area of a spherical section. The first modern monolithic dome structure was built in Provo, Utah, by architect Lee C. Knell, and opened in 1963 as an ice skating rink. Called ''Turtle Reams'' after its 1967 conversion into a general store by new owner Paul Ream, the building st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geodesic
In geometry, a geodesic () is a curve representing in some sense the shortest path ( arc) between two points in a surface, or more generally in a Riemannian manifold. The term also has meaning in any differentiable manifold with a connection. It is a generalization of the notion of a "straight line". The noun '' geodesic'' and the adjective ''geodetic'' come from ''geodesy'', the science of measuring the size and shape of Earth, though many of the underlying principles can be applied to any ellipsoidal geometry. In the original sense, a geodesic was the shortest route between two points on the Earth's surface. For a spherical Earth, it is a segment of a great circle (see also great-circle distance). The term has since been generalized to more abstract mathematical spaces; for example, in graph theory, one might consider a geodesic between two vertices/nodes of a graph. In a Riemannian manifold or submanifold, geodesics are characterised by the property of having vanishin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hugh Kenner
William Hugh Kenner (January 7, 1923 – November 24, 2003) was a Canadian literary scholar, critic and professor. He published widely on Modernist literature with particular emphasis on James Joyce, Ezra Pound, and Samuel Beckett. His major study of the period, '' The Pound Era'', argued for Pound as the central figure of Modernism, and is considered one of the most important works on the topic. Biography Early years and education Kenner was born in Peterborough, Ontario, on January 7, 1923. His father H. R. H. Kenner taught classics and his mother Mary (Williams) Kenner taught French and German at Peterborough Collegiate Institute. Kenner attributed his interest in literature to his poor hearing, caused by a bout of influenza during his childhood. Attending the University of Toronto, Kenner studied under Marshall McLuhan, who wrote the introduction to Kenner's first book ''Paradox in Chesterton'', about G. K. Chesterton's works. Kenner's second book, ''Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoberman Sphere
A Hoberman sphere is an isokinetic structure patented by Chuck Hoberman that resembles a geodesic dome, but is capable of folding down to a fraction of its normal size by the scissor-like action of its joints. Colorful plastic versions have become popular as children's toys: several toy sizes exist, with the original design capable of expanding from in diameter to . Description A Hoberman sphere typically consists of six great circles corresponding to the edges of an icosidodecahedron. The Hoberman sphere can be unfolded by allowing certain members to spread apart. The operation of each joint is linked to all the others in a scissors mechanism like those used to mount pantograph mirrors, or how a folding chair operates. In larger models, this can be accomplished by feeding out a string or cable instead. The largest existing Hoberman sphere is in the AHHAA Science Center in Tartu, Estonia. Fully expanded, it is in diameter. The motorized sphere weighs , is constructed of air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gridshell
A gridshell is a structure which derives its strength from its double curvature (in a similar way that a fabric structure derives strength from double curvature), but is constructed of a grid or lattice. The grid can be made of any material, but is most often wood (similar to garden trellis) or steel. Gridshells were pioneered in the 1896 by Russian engineer Vladimir Shukhov in constructions of exhibition pavilions of the All-Russia industrial and art exhibition 1896 in Nizhny Novgorod. Large span timber gridshells are commonly constructed by initially laying out the main lath members flat in a regular square or rectangular lattice, and subsequently deforming this into the desired doubly curved form. This can be achieved by pushing the members up from the ground, as in the Mannheim Multihalle. More recent projects such as the Savill Garden gridshell were constructed by laying the laths on top of a sizeable temporary scaffolding structure which is removed in phases to let t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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