arch |
closet |
top 10 words in brain distribution (in article): time type century form state world term require range provide |
top 10 words in brain distribution (in article): build design house provide wall common size construction water current |
top 10 words in brain distribution (not in article): music instrument produce plant light play fruit string drink water |
top 10 words in brain distribution (not in article): city material power station wood store line type state street |
times more probable under arch 30 20 10 6 4 2.5 1.25 1 1.25 2.5 4 6 10 20 30 times more probable under closet (words not in the model) | |
An arch'" is a structure that spans a space while supporting weight (e.g. a doorway in a stone wall). Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture, but their systematic use started with the Ancient Romans who were the first to apply the technique to a wide range of structures. History. Arches were known by the Mesopotamian, Urartian, Harappan, Egyptian, Babylonian, Greek and Assyrian civilizations, but their use was infrequent and mostly confined to underground structures such as drains where the problem of lateral thrust is greatly diminished. The ancient Romans learned the arch from the Etruscans, refined it and were the first builders to tap its full potential for above ground buildings: "The Romans were the first builders in Europe, perhaps the first in the world, fully to appreciate the advantages of the arch, the vault and the dome." Throughout the Roman empire, their engineers erected arch structures such as bridges, aqueducts, and gates. They also introduced the triumphal arch as a military monument. Vaults began to be used for roofing large interior spaces such as halls and temples, a function which was also assumed by domed structures from the 1st century BC onwards. The Roman arch is semicircular, and built from an odd number of arch bricks (called "voussoirs"). An odd number of bricks is required for there to be a "capstone" or "keystone", the topmost stone in the arch. The Roman arch's shape is the simplest to build, but not the strongest. There is a tendency for the sides to bulge outwards, which must be counteracted by an added weight of masonry to push them inwards. The Romans used this type of semicircular arch freely in many of their secular structures such as aqueducts, palaces and amphitheaters. The semicircular arch was followed in Europe by the pointed Gothic arch or ogive (derived from the Islamic pointed arch in Moorish Spain), whose centreline more closely followed the forces of compression and which was therefore stronger. The semicircular arch can be flattened to make an elliptical arch as in the Ponte Santa Trinita. The parabolic and catenary arches are now known to be the theoretically strongest forms. Parabolic arches were introduced in construction by the Spanish architect Antoni Gaudí, who admired the structural system of Gothic style, but for the buttresses, which he termed “architectural crutches”. The catenary and parabolic arches carry all horizontal thrust to the foundation and so do not need additional elements. The horseshoe arch is based on the semicircular arch, but its lower ends are extended further round the circle until they start to converge. The first examples known are carved into rock in India in the first century AD, while the first known built horseshoe arches are known from Aksum (modern day Ethiopia and Eritrea) from around the 3rd–4th century, around the same time as the earliest contemporary examples in Syria, suggesting either an Aksumite or Syrian origin for the type of arch. It was used in Spanish Visigothic architecture, Islamic architecture and mudéjar architecture, as in the Great Mosque of Damascus and in later Moorish buildings. It was used for decoration rather than for strength. Across the ocean in Mexico and Central America, Mesoamerican civilizations created various types of corbelled arches, such as with the interior tunnels in the Great Pyramid of Cholula and the many styles of corbelled arches built by the Mayan civilization. In Peru, the Inca civilization used a trapezoidal arch in their architecture. The arch is still used today in some modern structures such as bridges. Construction. An arch requires all of its elements to hold it together, raising the question of how an arch is constructed. One answer is to build a frame (historically, of wood) which exactly follows the form of the underside of the arch. This is known as a centre or centring. The voussoirs are laid on it until the arch is complete and self-supporting. For an arch | A closet'" (especially in North American usage) is a small and enclosed space, a cabinet, or a cupboard in a house or building used for general storage or hanging clothes. A closet for food storage is usually referred to as a "pantry". A closet, through French from Latin "clausum", "closed" began life in the seventeenth century as a small private room, often behind a bedroom, to which a man or woman could retire, for privacy, reading, or enjoyment of personal works of art: for this usage, see Cabinet (architecture). Modern closets can be built into the walls of the house during construction so that they take up no apparent space in the bedroom, or they can be a large, free-standing piece of furniture designed for clothes storage, in which case they are often called a wardrobe or armoire. Closets are often built under stairs, thereby using awkward space that would otherwise go unused. In current British usage, a "wardrobe" can also be built-in, and the word "cupboard" can be used to refer to a closet. In Elizabethan and Middle English, "closet" referred to a larger room in which a person could sit and read in private, but now refers to a small room in general. In Indian usage, a closet often refers to a toilet. This probably originated from the word "water closet", which refers to a flush toilet. In North America, chests, trunks and wall-mounted pegs typically provided storage prior to World War II. Built-in wall closets were uncommon and where they did exist, they tended to be small and shallow. Following World War II, however, deeper, more generously sized closets were introduced to new housing designs, which proved to be very attractive to buyers. It has even been suggested that the closet was a major factor in peoples' migration to the suburbs. Closet tax question in colonial America. Though some sources claim that colonial American houses often lacked closets because of a "closet tax" imposed by the British crown, others argue that closets were absent in most houses simply because their residents had few possessions. Closets in pop culture. Figuratively, a closet is a place where one hides things; "having skeletons in one's closet" is a figure of speech for having particularly sensitive secrets. Thus, "closet" as an adjective means "secret"—usually with a connotation of vice or shame, as in "a closet alcoholic" or "a closet homosexual," though sometimes used as a humorous exaggeration for any potential embarrassment, as in "a closet comic book fan." To "come out of the closet" is to admit your secrets publicly, but this is now used almost exclusively in reference to homosexuality. The documentary "The Celluloid Closet" uses this reference to gay people in its examination of how Hollywood films have depicted homosexuals on the screen. This is also extensively used in a controversial episode of "South Park". Psychologically, bedroom closets are the center of many childhood fears. Children fear during the night that a monster or any other paranormal creature hides inside the closet, and is destined to frighten the child. The Bogeyman is one prominent example. This is a common theme in films. In the first of the "Poltergeist" movies, the closet was the area of the family house the ghosts hid in to kidnap the child. And the "monster in the closet" fear was developed for comedic possibilities in film "Monsters, Inc.", in which monsters teleport into children's closets at night from a central location in order to scare them as a means of collecting screams, which run the monster economy. In the newspaper comic "Bloom County", the character Binkley had an "anxiety closet" in his bedroom, from which his fears would manifest themselves, while he was sleeping. For example, a librarian wielding a battle-axe, which then struck the headboard of his bed, attacked due to an overdue library book. Similarly, Opus the penguin from the Sunday strip Opus also has a closet which houses his worries. |