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Balbis
In geometry, a balbis is a geometric shape that can be colloquially defined as a single (primary) line that is terminated by a (secondary) line at one endpoint and by a (secondary) line at the other endpoint. The terminating secondary lines are at right angles to the primary line. Its parallel sides are of indefinite lengths and can be infinitely long. The word "balbis" comes from the ancient Greek word βαλβίς, meaning a rope between two posts used to indicate the start and finish of a race. The most common example of a balbis is the capital letter ' H', the eighth letter in the ISO basic Latin alphabet. It can also be seen in, for example, rugby posts and old-fashioned television antenna. Another type of balbis is the rectangular balbis, that may be loosely described as a rectangle with one side missing. A rectangular balbis was used in the Olympic Games, as a throwing area and is described by Philostratus II. In his book about the balbis (see References below), the Rev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balbis Hydrant Example
In geometry, a balbis is a geometric shape that can be colloquially defined as a single (primary) line that is terminated by a (secondary) line at one endpoint and by a (secondary) line at the other endpoint. The terminating secondary lines are at right angles to the primary line. Its parallel sides are of indefinite lengths and can be infinitely long. The word "balbis" comes from the ancient Greek word βαλβίς, meaning a rope between two posts used to indicate the start and finish of a race. The most common example of a balbis is the capital letter ' H', the eighth letter in the ISO basic Latin alphabet. It can also be seen in, for example, rugby posts and old-fashioned television antenna. Another type of balbis is the rectangular balbis, that may be loosely described as a rectangle with one side missing. A rectangular balbis was used in the Olympic Games, as a throwing area and is described by Philostratus II. In his book about the balbis (see References below), the Rev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geometry
Geometry (; ) is, with arithmetic, one of the oldest branches of mathematics. It is concerned with properties of space such as the distance, shape, size, and relative position of figures. A mathematician who works in the field of geometry is called a ''geometer''. Until the 19th century, geometry was almost exclusively devoted to Euclidean geometry, which includes the notions of point, line, plane, distance, angle, surface, and curve, as fundamental concepts. During the 19th century several discoveries enlarged dramatically the scope of geometry. One of the oldest such discoveries is Carl Friedrich Gauss' ("remarkable theorem") that asserts roughly that the Gaussian curvature of a surface is independent from any specific embedding in a Euclidean space. This implies that surfaces can be studied ''intrinsically'', that is, as stand-alone spaces, and has been expanded into the theory of manifolds and Riemannian geometry. Later in the 19th century, it appeared that geometries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Geometric Shapes
Lists of shapes cover different types of geometric shape and related topics. They include mathematics topics and other lists of shapes, such as shapes used by drawing or teaching tools. Mathematics * List of mathematical shapes * List of two-dimensional geometric shapes ** List of triangle topics ** List of circle topics * List of curves * List of surfaces * List of polygons, polyhedra and polytopes ** List of regular polytopes and compounds Elsewhere * Solid geometry, including table of major three-dimensional shapes * Box-drawing character * Cuisenaire rods (learning aid) * Geometric shape * Geometric Shapes (Unicode) * Glossary of shapes with metaphorical names * List of symbols * Pattern Blocks Pattern Blocks are a set of mathematical manipulatives developed in the 1960s. The six shapes are both a play resource and a tool for learning in mathematics, which serve to develop spatial reasoning skills that are fundamental to the learning of m ... (learning aid) {{DEFAULTS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO Basic Latin Alphabet
The ISO basic Latin alphabet is an international standard (beginning with ISO/IEC 646) for a Latin-script alphabet that consists of two sets (uppercase and lowercase) of 26 letters, codified in various national and international standards and used widely in international communication. They are the same letters that comprise the current English alphabet. Since medieval times, they are also the same letters of the modern Latin alphabet. The order is also important for sorting words into alphabetical order. The two sets contain the following 26 letters each: History By the 1960s it became apparent to the computer and telecommunications industries in the First World that a non-proprietary method of encoding characters was needed. The International Organization for Standardization (ISO) encapsulated the Latin script in their (ISO/IEC 646) 7-bit character-encoding standard. To achieve widespread acceptance, this encapsulation was based on popular usage. The standard was based ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yagi–Uda Antenna
A Yagi–Uda antenna or simply Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these elements are most often metal rods acting as half-wave dipoles. Yagi–Uda antennas consist of a single driven element connected to a radio transmitter and/or receiver through a transmission line, and additional "passive radiators" with no electrical connection, usually including one so-called ''reflector'' and any number of ''directors''. It was invented in 1926 by Shintaro Uda of Tohoku Imperial University, Japan, with a lesser role played by his guidance Hidetsugu Yagi. (This was the preface and notice in advance for a series of 11 papers with the same title by Uda between 1926–1929 on the antenna. However, it seems that Uda's pre-announcement caused his invention to lose its novelty and become unpatentable. He would not have been informed by Professor Yagi about those.) Reflector elements (usually only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rectangle
In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°); or a parallelogram containing a right angle. A rectangle with four sides of equal length is a ''square''. The term "oblong" is occasionally used to refer to a non-square rectangle. A rectangle with vertices ''ABCD'' would be denoted as . The word rectangle comes from the Latin ''rectangulus'', which is a combination of ''rectus'' (as an adjective, right, proper) and ''angulus'' (angle). A crossed rectangle is a crossed (self-intersecting) quadrilateral which consists of two opposite sides of a rectangle along with the two diagonals (therefore only two sides are parallel). It is a special case of an antiparallelogram, and its angles are not right angles and not all equal, though opposite angles are equal. Other geometries, such as spherical, elliptic, and hyperboli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philostratus II
Philostratus or Lucius Flavius Philostratus (; grc-gre, Φιλόστρατος ; c. 170 – 247/250 AD), called "the Athenian", was a Greek sophist of the Roman imperial period. His father was a minor sophist of the same name. He was born probably around 170, and is said by the ''Suda'' to have been living in the reign of emperor Philip the Arab (244–249). His death possibly occurred in Tyre c. 250 AD. Name and identity Some ambiguity surrounds his name. The name ''Flavius'' is given in ''The Lives of the Sophists'' and Tzetzes. Eunapius and Synesius call him a Lemnian; Photius a Tyrian; his letters refer to him as an Athenian. It is probable that he was born in Lemnos, studied and taught at Athens, and then settled in Rome (where he would naturally be called ''Atheniensis'') as a member of the learned circle with which empress Julia Domna surrounded herself. Works attributed to Philostratus Historians agree that Philostratus authored at least five works: ''Life of Apolloniu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stoughton, West Sussex
Stoughton is a village and civil parish in the District of Chichester in West Sussex, England located north west of Chichester east of the B2146 road, on a lane leading to East Marden. The parish has a land area of . In the 2001 census 631 people lived in 255 households, of whom 286 were economically active. At the 2011 Census the population including Walderton had increased to 659. The parish is crossed from west to east by the Monarch's Way long-distance footpath, which passes through the villages of Stoughton and Walderton. There is one pub, ''The Hare and Hounds''. Famous 19th-century cricketer George Brown was born in the village. The parish church The church, standing on a hillside overlooking the village, is of late Saxon or early Norman origin. Built around 1050, the church was restored around 1850. The Trinity Episcopal Church of Stoughton Massachusetts, USA received a stone from the ribbing in the old church's chancel area as a gift in 1935, presented to then Rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
