ApseIn architecture, an apse (plural apses; from Latin absis 'arch, vault' from Ancient Greek ἀψίς 'arch'; sometimes written apsis, plural apsides) is a semicircular recess covered with a hemispherical vault or semi-dome, also known as an exedra. In Byzantine, Romanesque, and Gothic Christian church (including cathedral and abbey) architecture, the term is applied to a semi-circular or polygonal termination of the main building at the liturgical east end (where the altar is), regardless of the shape of the roof, which may be flat, sloping, domed, or hemispherical.
Church (building)A church, church building, or church house is a building used for Christian worship services and other Christian religious activities. The earliest identified Christian church is a house church founded between 233 and 256. Sometimes, the word church is used by analogy and simplicity for the buildings of other religions, such as mosques and synagogues. Church is also used to describe a body or an assembly of Christian believers, while "the Church" may be used to refer to the worldwide Christian religious community as a whole.
Romanesque architectureRomanesque architecture is an architectural style of medieval Europe characterized by semi-circular arches. There is no consensus for the beginning date of the Romanesque style, with proposals ranging from the 6th to the 11th century, this later date being the most commonly held. In the 12th century it developed into the Gothic style, marked by pointed arches. Examples of Romanesque architecture can be found across the continent, making it the first pan-European architectural style since Imperial Roman architecture.
Parabolic archA parabolic arch is an arch in the shape of a parabola. In structures, their curve represents an efficient method of load, and so can be found in bridges and in architecture in a variety of forms. While a parabolic arch may resemble a catenary arch, a parabola is a quadratic function while a catenary is the hyperbolic cosine, cosh(x), a sum of two exponential functions. One parabola is f(x) = x2 + 3x − 1, and hyperbolic cosine is cosh(x) = ex + e−x/2. The curves are unrelated.
Architecture of the medieval cathedrals of EnglandThe medieval cathedrals of England, which date from between approximately 1040 and 1540, are a group of twenty-six buildings that constitute a major aspect of the country's artistic heritage and are among the most significant material symbols of Christianity. Though diverse in style, they are united by a common function. As cathedrals, each of these buildings serves as central church for an administrative region (or diocese) and houses the throne of a bishop (Late Latin ecclēsia cathedrālis, from the Greek, καθέδρα).
Corbel archA corbel arch (or corbeled / corbelled arch) is an arch-like construction method that uses the architectural technique of corbeling to span a space or void in a structure, such as an entranceway in a wall or as the span of a bridge. A corbel vault uses this technique to support the superstructure of a building's roof.
