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Rowe Hessler
ROWE HESSLER (born on February 27, 1991 on Long Island, New York
Long Island, New York
) is a two-time former speedcubing U.S. Champion and runner-up World Champion as of 2011. He held the North American record for the average of 5 Rubik\'s Cube solves almost continuously from 2009 to 2014, during which time the record dropped from 11.11 seconds to 8.27 seconds. As of May 2014, his average of 8.27 seconds ranks him eleventh in the world. Hessler is also known for his expertise in the 2x2x2 event, having set the former world record in 2009 with an average time of 2.45 seconds. In October 2009, he attended the World Championships in Germany and was crowned World Champion in the 2x2x2 event. Rowe now works for TheCubicle.us, a leading USA-based cube store in New York. WORLD RECORDS EVENT RESULT COMPETITION 2x2x2 single 0.96 seconds U.S
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Great Dodecahedron
In geometry , the GREAT DODECAHEDRON is a Kepler–Poinsot polyhedron , with Schläfli symbol
Schläfli symbol
{5,5/2} and Coxeter–Dynkin diagram
Coxeter–Dynkin diagram
of . It is one of four nonconvex regular polyhedra . It is composed of 12 pentagonal faces (six pairs of parallel pentagons), with five pentagons meeting at each vertex, intersecting each other making a pentagrammic path. The discovery of the great dodecahedron is sometimes credited to Louis Poinsot
Louis Poinsot
in 1810, though there is a drawing of something very similar to a great dodecahedron in the 1568 book Perspectiva Corporum Regularium by Wenzel Jamnitzer
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Truncated Icosahedron
In geometry , the TRUNCATED ICOSAHEDRON is an Archimedean solid
Archimedean solid
, one of 13 convex isogonal nonprismatic solids whose faces are two or more types of regular polygons . It has 12 regular pentagonal faces, 20 regular hexagonal faces, 60 vertices and 90 edges. It is the Goldberg polyhedron GPV(1,1) or {5+,3}1,1, containing pentagonal and hexagonal faces. This geometry is associated with footballs (soccer balls) typically patterned with white hexagons and black pentagons. Geodesic domes such as those whose architecture Buckminster Fuller
Buckminster Fuller
pioneered are often based on this structure. It also corresponds to the geometry of the fullerene C60 ("buckyball") molecule. It is used in the cell-transitive hyperbolic space-filling tessellation, the bitruncated order-5 dodecahedral honeycomb
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Icosahedron
In geometry , an ICOSAHEDRON (/ˌaɪkɒsəˈhiːdrən, -kə-, -koʊ-/ or /aɪˌkɒsəˈhiːdrən/ ) is a polyhedron with 20 faces. The name comes from Greek εἴκοσι (eíkosi), meaning 'twenty', and ἕδρα (hédra), meaning 'seat'. The plural can be either "icosahedra" (/-drə/ ) or "icosahedrons". There are many kinds of icosahedra, with some being more symmetrical than others. The best known is the Platonic , convex regular icosahedron
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Tetrahedron
In geometry , a TETRAHEDRON (plural: TETRAHEDRA or TETRAHEDRONS), also known as a TRIANGULAR PYRAMID, is a polyhedron composed of four triangular faces , six straight edges , and four vertex corners . The tetrahedron is the simplest of all the ordinary convex polyhedra and the only one that has fewer than 5 faces. The tetrahedron is the three-dimensional case of the more general concept of a Euclidean simplex , and may thus also be called a 3-SIMPLEX. The tetrahedron is one kind of pyramid , which is a polyhedron with a flat polygon base and triangular faces connecting the base to a common point. In the case of a tetrahedron the base is a triangle (any of the four faces can be considered the base), so a tetrahedron is also known as a "triangular pyramid". Like all convex polyhedra , a tetrahedron can be folded from a single sheet of paper. It has two such nets
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Octahedron
In geometry , an OCTAHEDRON (plural: octahedra) is a polyhedron with eight faces, twelve edges, and six vertices. The term is most commonly used to refer to the REGULAR octahedron, a Platonic solid composed of eight equilateral triangles , four of which meet at each vertex. A regular octahedron is the dual polyhedron of a cube . It is a rectified tetrahedron . It is a square bipyramid in any of three orthogonal orientations. It is also a triangular antiprism in any of four orientations. An octahedron is the three-dimensional case of the more general concept of a cross polytope . A regular octahedron is a 3-ball in the Manhattan (ℓ1) metric
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Long Island, New York
Coordinates : 40°48′N 73°18′W / 40.8°N 73.3°W / 40.8; -73.3 Long Island
Long Island
NATIVE NAME : PAUMANOK Location of Long Island
Long Island
in New York GEOGRAPHY LOCATION Atlantic Ocean
Atlantic Ocean
COORDINATES 40°48′N 73°18′W / 40.8°N 73.3°W / 40.8; -73.3 AREA 1,401 sq mi (3,630 km2) ADMINISTRATION UNITED STATES STATE New York DEMOGRAPHICS DEMONYM Long Islander POPULATION 7,838,722 (2015) POP
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Dodecahedron
In geometry , a DODECAHEDRON (Greek δωδεκάεδρον, from δώδεκα dōdeka "twelve" + ἕδρα hédra "base", "seat" or "face") is any polyhedron with twelve flat faces. The most familiar dodecahedron is the regular dodecahedron , which is a Platonic solid
Platonic solid
. There are also three regular star dodecahedra , which are constructed as stellations of the convex form. All of these have icosahedral symmetry , order 120. The pyritohedron is an irregular pentagonal dodecahedron, having the same topology as the regular one but pyritohedral symmetry while the tetartoid has tetrahedral symmetry . The rhombic dodecahedron , seen as a limiting case of the pyritohedron, has octahedral symmetry . The elongated dodecahedron and trapezo-rhombic dodecahedron variations, along with the rhombic dodecahedra, are space-filling . There are a large number of other dodecahedra
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Cuboid
In geometry , a CUBOID is a convex polyhedron bounded by six quadrilateral faces, whose polyhedral graph is the same as that of a cube . While mathematical literature refers to any such polyhedron as a cuboid, other sources use "cuboid" to refer to a shape of this type in which each of the faces is a rectangle (and so each pair of adjacent faces meets in a right angle ); this more restrictive type of cuboid is also known as a RECTANGULAR CUBOID, RIGHT CUBOID, RECTANGULAR BOX, RECTANGULAR HEXAHEDRON , RIGHT RECTANGULAR PRISM, or RECTANGULAR PARALLELEPIPED . CONTENTS * 1 General cuboids * 2 Rectangular cuboid * 2.1 Nets * 3 See also * 4 References * 5 External links GENERAL CUBOIDSBy Euler\'s formula the numbers of faces F, of vertices V, and of edges E of any convex polyhedron are related by the formula F + V = E + 2. In the case of a cuboid this gives 6 + 8 = 12 + 2; that is, like a cube, a cuboid has 6 faces , 8 vertices , and 12 edges
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Panagiotis Verdes
PANAGIOTIS VERDES is the Greek inventor of the 6x6x6 , 7x7x7 , 8x8x8 and 9x9x9 Twisty Puzzles . He has also worked on new designs of every Twisty Puzzle from 2x2x2 to 11x11x11. INVENTIONS The V-Cube 6 in solved state The V-Cube 7 in solved state Prior to Verdes's invention, the 6x6x6 cube was thought to be impossible due to geometry constraints. Verdes's invention uses a completely different mechanism than the smaller Rubik's cubes; his mechanism is based on concentric, right-angle conical surfaces whose axes of rotation coincide with the semi-axes of the cube. The patents for the cubes were awarded in 2004, and mass-production began in 2008. Verdes's mechanism allows cubes of up to size 11x11x11, as larger cubes have geometrical constraints. REFERENCES * ^ A B C Slocum, Jerry (2009). The Cube: The Ultimate Guide to the World's Bestselling Puzzle. United States: Black Dog & Leventhal
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Rubik's Triamid
The RUBIK\'S TRIAMID is a mechanical puzzle invented by Ernő Rubik and released in 1991 by Matchbox . The puzzle is similar to the Rubik\'s Cube in that the objective is to manipulate the puzzle until all sides are uniform in colour. The puzzle itself forms a triangular pyramid , so that there are four sides and colours. RULESUnlike the Cube, the Triamid is easy to disassemble as it is made of ten individual pieces (each with four coloured sides) and four joining sections. Following the rules, to solve the puzzle the user must remove a small pyramid (of four pieces) from any of the four end points, rotate it, and reattach it. The puzzle is superficially similar to the Pyraminx
Pyraminx
but, unlike that puzzle, it is possible to move pieces between a side and a corner position. PIECESEach piece of the puzzle has four faces
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Rubik's Snake
A RUBIK\'S SNAKE (also RUBIK\'S TWIST, Rubik's Transformable Snake, Rubik’s Snake Puzzle) is a toy with twenty-four wedges that are right isosceles triangular prisms . The wedges are connected by spring bolts , so that they can be twisted, but not separated. By being twisted, the Rubik's Snake
Rubik's Snake
can be made to resemble a wide variety of objects, animals, or geometric shapes. Its "ball" shape in its packaging is a non-uniform concave rhombicuboctahedron . The snake was invented by Ernő Rubik
Ernő Rubik
, better known as the inventor of the Rubik\'s Cube . CONTENTS * 1 Release * 2 Structure * 3 Notation * 3.1 Twisting instructions * 3.2 Machine processing * 3.3 Fiore method * 4 Mathematical formulation * 5 See also * 6 References * 7 External links RELEASE Rubik's Snake
Rubik's Snake
was released during 1981 at the height of the Rubik's Cube craze
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Impossiball
The IMPOSSIBALL is a rounded icosahedral puzzle similar to the Rubik\'s Cube . It has a total of 20 movable pieces to rearrange, same as the Rubik's Cube, but all of the Impossiball's pieces are corners, like the Pocket Cube . CONTENTS * 1 History * 2 Description * 3 Solutions * 4 Number of combinations * 5 See also * 6 References * 7 External links HISTORYWilliam O. Gustafson applied for a patent for the Impossiball
Impossiball
design in 1981 and it was issued in 1984. Uwe Mèffert eventually bought the rights to some of the patents and continues to sell it in his puzzle shop under the Impossiball
Impossiball
moniker. DESCRIPTIONThe Impossiball
Impossiball
is made in the shape of an icosahedron that has been rounded out to a sphere, and has 20 pieces, all of them corners
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Skewb Ultimate
The SKEWB ULTIMATE, originally marketed as Pyraminx
Pyraminx
Ball is a twelve-sided puzzle derivation of the Skewb
Skewb
, produced by famous toy-maker Uwe Meffert . Most versions of this puzzle are sold with six different colors of stickers attached, with opposite sides of the puzzle having the same color; however, some early versions of the puzzle have a full set of 12 colors. CONTENTS * 1 Description * 2 Solutions * 3 Number of combinations * 4 See also * 5 External links DESCRIPTIONThe Skewb
Skewb
Ultimate is made in the shape of a dodecahedron, like the Megaminx , but cut differently. Each face is cut into 4 parts, two equal and two unequal. Each cut is a deep cut: it bisects the puzzle. This results in 8 smaller corner pieces and 6 larger "edge" pieces. The purpose of the puzzle is to scramble the colors, and then restore them to the original configuration
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Pyraminx Crystal
The PYRAMINX CRYSTAL is a dodecahedral puzzle similar to the Rubik\'s Cube and the Megaminx . It is manufactured and sold by Uwe Mèffert in his puzzle shop since 2008. The puzzle was originally called the Brilic, and was first made in 2006 by Aleh Hladzilin, a member of the Twisty Puzzles Forum. It is not to be confused with the Pyraminx
Pyraminx
, which is also invented and sold by Meffert. CONTENTS * 1 History * 2 Description * 3 Solutions * 4 Number of combinations * 5 See also * 6 References HISTORY White-bodied Pyraminx
Pyraminx
Crystal with a star pattern applied to the faces. The Pyraminx
Pyraminx
Crystal was patented in Europe on July 16, 1987. The patent number is DE8707783U. In late 2007, due to requests by puzzle fans worldwide, Uwe Mèffert began manufacturing the puzzle. The puzzles were first shipped in February 2008
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Yu Nakajima
YU NAKAJIMA (中島 悠, born February 15, 1991 in Ebetsu, Hokkaidō ) is a Japanese Rubik\'s Cube solver. Yu held the former world record for Rubik's Cube average (11.28 seconds) and single (8.72 seconds). He beat the previous world record holder Edouard Chambon , who had a single solve record of 9.18 seconds. Both records were set on May 5, 2008, at the Kashiwa Open 2008. On May 23, 2008 Yu posted a video on YouTube where he completed the cube in 6.57 seconds. He also solved the Rubik's magic in 1.05 seconds. He set the World Record for the 5x5x5 cube at 54.86 seconds in April 2012. REFERENCES * ^ "Rubik\'s Cube Solver". www.rubiks-cube-solver.com. Retrieved 21 June 2016. * ^ "Official results of Yu Nakajima.". worldcubeassociation.org. Retrieved 2008-05-21. * ^ "Official results of Edouard Chambon.". worldcubeassociation.org. Retrieved 2008-05-21
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