Semi-dome

A semi-dome, also called a "half-dome", is the term in architecture for half a dome ("cut" vertically), used to cover a semi-circular area. Similar structures occur in nature.

Architecture

Semi-domes are a common feature of apses in Ancient Roman and traditional church architecture, and mosques and iwans in Islamic architecture.

A semi-dome, or the whole apse, may also be called a conch after the scallop shell often carved as decoration of the semi-dome (all shells were conches in Ancient Greek), though this is usually used for subsidiary semi-domes, rather than the one over the main apse. Small semi-domes have been often decorated in a shell shape from ancient times, as in Piero della Francesca's Throned Madonna with saints and Federigo da Montefeltro, and the example in the gallery below. Islamic examples may use muqarnas decorative corbelling, while in Late Antique, Byzantine and medieval church architecture the semi-dome is the classic location for a focal mosaic, or later fresco.

Dome

A dome (from Latin: domus) is an architectural element that resembles the hollow upper half of a sphere. The precise definition has been a matter of controversy. There are also a wide variety of forms and specialized terms to describe them. A dome can rest upon a rotunda or drum, and can be supported by columns or piers that transition to the dome through squinches or pendentives. A lantern may cover an oculus and may itself have another dome.

Domes have a long architectural lineage that extends back into prehistory and they have been constructed from mud, stone, wood, brick, concrete, metal, glass, and plastic over the centuries. The symbolism associated with domes includes mortuary, celestial, and governmental traditions that have likewise developed over time.

Domes have been found from early Mesopotamia, which may explain the form's spread. They are found in Persian, Hellenistic, Roman, and Chinese architecture in the Ancient world, as well as among a number of contemporary indigenous building traditions. They were popular in Byzantine and medieval Islamic architecture, and there are numerous examples from Western Europe in the Middle Ages. The Renaissance style spread from Italy in the Early modern period. Advancements in mathematics, materials, and production techniques since that time resulted in new dome types. The domes of the modern world can be found over religious buildings, legislative chambers, sports stadiums, and a variety of functional structures.

Dôme (coffeehouse)

Dôme Coffee is a franchise chain of European-style café restaurants based in Perth, Australia.

It is an extensive chain in Western Australia, with numerous locations.

Dome also has developed a number of locations in Tasmania, as well as internationally, including Dubai, Indonesia, Philippines, Malaysia, Singapore, Bahrain, Abu Dhabi and at the Malé International Airport in the Maldives.

History

It was founded by Patria Jafferies and Phil May in 1990.

The initial outlet was established in Napoleon St, Cottesloe in 1993. By the early 2000s it was a significant player in the larger Australian market

There are now over 100 Dôme cafés in seven countries. The corporate headquarters are in Maylands, Western Australia.

See also

Notes

External links

Spherical cap

In geometry, a spherical cap, spherical dome, or spherical segment of one base is a portion of a sphere cut off by a plane. If the plane passes through the center of the sphere, so that the height of the cap is equal to the radius of the sphere, the spherical cap is called a hemisphere.

Volume and surface area

If the radius of the base of the cap is , and the height of the cap is , then the volume of the spherical cap is

and the curved surface area of the spherical cap is

or

The relationship between and is irrelevant as long as 0 ≤ ≤ . The red section of the illustration is also a spherical cap.

The parameters , and are not independent:

Substituting this into the area formula gives:

Note also that in the upper hemisphere of the diagram, , and in the lower hemisphere ; hence in either hemisphere and so an alternative expression for the volume is

Application

The volume of the union of two intersecting spheres of radii r₁ and r₂ is

where

is the sum of the volumes of the two isolated spheres, and

Semič

Semič (pronounced [ˈseːmitʃ]; German: Semitsch) is a market settlement in Slovenia and the seat of the Municipality of Semič in the traditional region of White Carniola in southeastern Slovenia. The municipality is included in the Southeast Slovenia Statistical Region. It gets its name from Semenič Castle, which used to stand on a hill above the settlement. Semič was the location of a Yugoslav Partisan base and airfield in the Second World War, from where Allied airmen and escaped and freed prisoners of war were airlifted to safety.

The parish church in the settlement is dedicated to Saint Stephen and belongs to the Roman Catholic Diocese of Novo Mesto. It was first mentioned in written sources dating to 1228.

Hamlets

Semič contains a large number of hamlets, some of which used to be independent settlements. These include Coklovca, Gaber pri Semiču, Gora, Kašča, Kot pri Semiču (German: Winkel), Krč, Mladica, Podturn, Sadinja Vas (Sadinja vas, German: Sodinsdorf), Sela pri Semiču (German: Sela bei Heiligengeist), Trata, Vavpča Vas (Vavpča vas, German: Amtmannsdorf), Vrh, and Vrtača pri Semiču.

Semi

Semi- is a Latin prefix to a verb, noun, or adjective meaning "half". Some compounds formed with it are often abbreviated to simply "semi" in appropriate contexts:

See also

Numeral prefix

Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and other European languages, they are used to coin numerous series of words, such as unicycle – bicycle – tricycle, dyad – triad – decade, biped – quadruped, September – October – November – December, decimal – hexadecimal, sexagenarian – octogenarian, centipede – millipede, etc. There are two principal systems, taken from Latin and Greek, each with several subsystems; in addition, Sanskrit occupies a marginal position. There is also an international set of metric prefixes, which are used in the metric system, and which for the most part are either distorted from the forms below or not based on actual number words.

Table of number prefixes in English

In the following prefixes, a final vowel is normally dropped before a root that begins with a vowel, with the exceptions of bi-, which is bis- before a vowel, and of the other monosyllables, du-, di-, dvi-, tri-, which are invariable.