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T Puzzle
The T puzzle is a tiling puzzle consisting of four polygonal shapes which can be put together to form a capital T. The four pieces are usually one isosceles right triangle, two right trapezoids and an irregular shaped pentagon. Despite its apparent simplicity, it is a surprisingly hard puzzle of which the crux is the positioning of the irregular shaped piece. The earliest T puzzles date from around 1900 and were distributed as promotional giveaways. From the 1920s wooden specimen were produced and made available commercially. Most T puzzles come with a leaflet with additional figures to be constructed. Which shapes can be formed depends on the relative proportions of the different pieces. Origins and early history The Latin Cross The Latin cross puzzle consists of a reassembling a five-piece dissection of the cross with three isosceles right triangles, one right trapezoids and an irregular shaped six-sized piece (see figure). When the pieces of the cross puzzle have the right d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiling Puzzles
{{disambiguation, surname ...
Tiling may refer to: *The physical act of laying tiles *Tessellations Computing *The compiler optimization of loop tiling *Tiled rendering, the process of subdividing an image by regular grid *Tiling window manager People *Heinrich Sylvester Theodor Tiling (1818–1871), physician and botanist *Reinhold Tiling (1893–1933), German rocket pioneer Other uses *Neuronal tiling *Tile drainage, an agriculture practice that removes excess water from soil *Tiling (crater), a small, undistinguished crater on the far side of the Moon See also *Brickwork *Packing (other) *Tiling puzzle Tiling puzzles are puzzles involving two-dimensional packing problems in which a number of flat shapes have to be assembled into a larger given shape without overlaps (and often without gaps). Some tiling puzzles ask you to dissect a given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Functional Fixedness
Functional fixedness is a cognitive bias that limits a person to use an object only in the way it is traditionally used. The concept of functional fixedness originated in Gestalt psychology, a movement in psychology that emphasizes holistic processing. Karl Duncker defined functional fixedness as being a mental block against using an object in a new way that is required to solve a problem.Duncker, K. (1945). "On problem solving". '' Psychological Monographs'', 58:5 (Whole No. 270). This "block" limits the ability of an individual to use components given to them to complete a task, as they cannot move past the original purpose of those components. For example, if someone needs a paperweight, but they only have a hammer, they may not see how the hammer can be used as a paperweight. Functional fixedness is this inability to see a hammer's use as anything other than for pounding nails; the person couldn't think to use the hammer in a way other than in its conventional function. When tes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific American
''Scientific American'', informally abbreviated ''SciAm'' or sometimes ''SA'', is an American popular science magazine. Many famous scientists, including Albert Einstein and Nikola Tesla, have contributed articles to it. In print since 1845, it is the oldest continuously published magazine in the United States. ''Scientific American'' is owned by Springer Nature, which in turn is a subsidiary of Holtzbrinck Publishing Group. History ''Scientific American'' was founded by inventor and publisher Rufus Porter (painter), Rufus Porter in 1845 as a four-page weekly newspaper. The first issue of the large format newspaper was released August 28, 1845. Throughout its early years, much emphasis was placed on reports of what was going on at the United States Patent and Trademark Office, U.S. Patent Office. It also reported on a broad range of inventions including perpetual motion machines, an 1860 device for buoying vessels by Abraham Lincoln, and the universal joint which now can be found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Gardner
Martin Gardner (October 21, 1914May 22, 2010) was an American popular mathematics and popular science writer with interests also encompassing scientific skepticism, micromagic, philosophy, religion, and literatureespecially the writings of Lewis Carroll, L. Frank Baum, and G. K. Chesterton.Martin (2010) He was also a leading authority on Lewis Carroll. ''The Annotated Alice'', which incorporated the text of Carroll's two Alice books, was his most successful work and sold over a million copies. He had a lifelong interest in magic and illusion and in 1999, MAGIC magazine named him as one of the "100 Most Influential Magicians of the Twentieth Century". He was considered the doyen of American puzzlers. He was a prolific and versatile author, publishing more than 100 books. Gardner was best known for creating and sustaining interest in recreational mathematicsand by extension, mathematics in generalthroughout the latter half of the 20th century, principally through his "Mathema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nob Yoshigahara
Nobuyuki Yoshigahara ( ''Yoshigahara Nobuyuki'', commonly known as "Nob"; May 27, 1936 – June 19, 2004) was perhaps Japan's most celebrated inventor, collector, solver, and communicator of puzzles. Nob graduated from the Tokyo Institute of Technology in applied chemistry. After becoming disenchanted with his career in high-polymer engineering, Nob turned to high school teaching as an educator of chemistry and mathematics. As a puzzle columnist, Nob was an active contributor to many journals and had monthly columns in various popular magazines, including ''Quark''. He penned over 80 books on puzzles. Perhaps best known as a puzzle inventor, he commercially licensed his designs, such as the ''Rush Hour'' puzzle game, to companies including Binary Arts (now known as ThinkFun), Ishi Press, and Hanayama. He was also an avid computer programmer who used computers to help solve mathematical puzzles. Nob was an active participant in the International Puzzle Party, traveling the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eberhard Faber
The Eberhard Faber Pencil Company was started by John Eberhard Faber in 1861 in Midtown Manhattan, New York City by the East River at the foot of 42nd Street, on the present site of the United Nations Headquarters. After an 1872 fire, operations moved to the Eberhard Faber Pencil Factory in Greenpoint, Brooklyn, across the East River, which was acquired by Staedtler, a stationery company with global presence, in 1978. This factory was acquired by Faber-Castell USA in 1994 before being bought by Newell ( Sanford) and eventually rolled into the Paper Mate brand. Eberhard Faber had a lumber mill on Atsena Otie Key, near Cedar Key, Florida until it was destroyed following the 1896 Cedar Keys hurricane. A German subsidiary was founded in 1922 in Neumarkt, near Nuremberg, Germany by sons Eberhard and Lothar. Leonard E. Read (1898-1983) in his 1958 Essay " I, Pencil" detailed the economic ‘Free Market’ benefit to the world economy of a ‘Mongol 482’ Eberhard Faber pencil. See a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tangram
The tangram () is a dissection puzzle consisting of seven flat polygons, called ''tans'', which are put together to form shapes. The objective is to replicate a pattern (given only an outline) generally found in a puzzle book using all seven pieces without overlap. Alternatively the ''tans'' can be used to create original minimalist designs that are either appreciated for their inherent aesthetic merits or as the basis for challenging others to replicate its outline. It is reputed to have been invented in China sometime around the late 18th century and then carried over to America and Europe by trading ships shortly after. It became very popular in Europe for a time, and then again during World War I. It is one of the most widely recognized dissection puzzles in the world and has been used for various purposes including amusement, art, and education. Etymology The origin of the word 'tangram' is unclear. One conjecture holds that it is a compound of the Greek element '-gram' d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generalised T Puzzle
A generalization is a form of abstraction whereby common properties of specific instances are formulated as general concepts or claims. Generalizations posit the existence of a domain or set of elements, as well as one or more common characteristics shared by those elements (thus creating a conceptual model). As such, they are the essential basis of all valid deductive inferences (particularly in logic, mathematics and science), where the process of verification is necessary to determine whether a generalization holds true for any given situation. Generalization can also be used to refer to the process of identifying the parts of a whole, as belonging to the whole. The parts, which might be unrelated when left on their own, may be brought together as a group, hence belonging to the whole by establishing a common relation between them. However, the parts cannot be generalized into a whole—until a common relation is established among ''all'' parts. This does not mean that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The A-Team
''The A-Team'' is an American action-adventure television series that ran on NBC from January 1983 to March 1987 about former members of a fictitious United States Army Special Forces unit. The four members of the team were tried by court martial for a crime they had not committed. They were convicted and sentenced to serve terms in a military prison, but later escaped to Los Angeles and began working as soldiers of fortune, while trying to clear their names and avoid capture by law enforcement and military authorities. The series was created by Stephen J. Cannell and Frank Lupo. A feature film based on the series was released by 20th Century Fox in 2010. History ''The A-Team'' was created by writers and producers Stephen J. Cannell and Frank Lupo at the behest of Brandon Tartikoff, NBC's Entertainment president. Cannell was fired from ABC in the early 1980s, after failing to produce a hit show for the network, and was hired by NBC; his first project was ''The A-Team''. Bra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Marx And Company
Louis Marx and Company was an American toy manufacturer in business from 1919 to 1980. They made many types of toys including tin toys, toy soldiers, toy guns, action figures, dolls, toy cars and model trains. Some of their notable toys are Rock'em Sock'em Robots, Big Wheel tricycles, Disney branded dollhouses and playsets based on TV shows like ''Gunsmoke''. Its products were often imprinted with the slogan "One of the many Marx toys, have you all of them?" Logo and offerings The Marx logo was the letters "MAR" in a circle with a large X through it, resembling a railroad crossing sign. As the X sometimes goes unseen, Marx toys were, and are still today, often misidentified as "Mar" toys. Reputedly, because of this name confusion, the Italian diecast toy company Martoys, after two years of production, changed its name to Bburago in 1976. Although the Marx name is now largely forgotten except by toy collectors, several of the products that the company developed remain strong ico ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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