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Sounding Board
A sounding board, also known as a tester and abat-voix is a structure placed above and sometimes also behind a pulpit or other speaking platform that helps to project the sound of the speaker. It is usually made of wood. The structure may be specially shaped to assist the projection, for example, being formed as a parabolic reflector. In the typical setting of a church building, the sounding board may be ornately carved or constructed. The term "abat-voix," from the French word for the same thing (''abattre'' (“to beat down”) + ''voix'' (“voice”)), is also used in English. The term “sounding board” is also used figuratively to describe a person who listens to a speech or proposal in order that the speaker may rehearse or explore the proposition more fully. The term is also used inter-personally to describe one person listening to another, and especially to their ideas. When a person listens and responds with comments, they provide a perspective that otherwise would no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulpit
A pulpit is a raised stand for preachers in a Christian church. The origin of the word is the Latin ''pulpitum'' (platform or staging). The traditional pulpit is raised well above the surrounding floor for audibility and visibility, accessed by steps, with sides coming to about waist height. From the late medieval period onwards, pulpits have often had a canopy known as the sounding board, ''tester'' or ''abat-voix'' above and sometimes also behind the speaker, normally in wood. Though sometimes highly decorated, this is not purely decorative, but can have a useful acoustic effect in projecting the preacher's voice to the congregation below. Most pulpits have one or more book-stands for the preacher to rest his or her bible, notes or texts upon. The pulpit is generally reserved for clergy. This is mandated in the regulations of the Catholic Church, and several others (though not always strictly observed). Even in Welsh Nonconformism, this was felt appropriate, and in some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parabolic Reflector
A parabolic (or paraboloid or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such as light, sound, or radio waves. Its shape is part of a circular paraboloid, that is, the surface generated by a parabola revolving around its axis. The parabolic reflector transforms an incoming plane wave travelling along the axis into a spherical wave converging toward the focus. Conversely, a spherical wave generated by a point source placed in the focus is reflected into a plane wave propagating as a collimated beam along the axis. Parabolic reflectors are used to collect energy from a distant source (for example sound waves or incoming star light). Since the principles of reflection are reversible, parabolic reflectors can also be used to collimate radiation from an isotropic source into a parallel beam. In optics, parabolic mirrors are used to gather light in reflecting telescopes and solar furnaces, and project a beam of light in flas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. From the 11th through the 14th centuries, there was a wave of church construction in Western Europe. Sometimes, the word ''church'' is used by analogy for the buildings of other religions. ''Church'' is also used to describe the Christian religious community as a whole, or a body or an assembly of Christian believers around the world. In traditional Christian architecture, the plan view of a church often forms a Christian cross; the center aisle and seating representing the vertical beam with the Church architecture#Characteristics of the early Christian church building, bema and altar forming the horizontal. Towers or domes may inspire contemplation of the heavens. Modern churches have a variety of architectural styles and layouts. Some buildings designe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baldachin
A baldachin, or baldaquin (from it, baldacchino), is a canopy of state typically placed over an altar or throne. It had its beginnings as a cloth canopy, but in other cases it is a sturdy, permanent architectural feature, particularly over high altars in cathedrals, where such a structure is more correctly called a ciborium when it is sufficiently architectural in form. Baldachins are often supported on columns, especially when they are disconnected from an enclosing wall. A cloth of honour is a simpler cloth hanging vertically behind the throne, usually continuing to form a canopy. It can also be used for similar canopies in interior design, for example above beds, and for processional canopies used in formal state ceremonies such as coronations, held up by four or more men with poles attached to the corners of the cloth. "''Baldachin''" was originally a luxurious type of cloth from Baghdad, from which name the word is ultimately derived, appearing in English as "''baudekin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chhatri
''Chhatri'' are elevated, dome-shaped pavilions used as an element in Indo-Islamic architecture and Indian architecture. Originating as a canopy above tombs, they serve as decorative elements. The earliest example of chhatri being used in the Indian Subcontinent were found in the Shrine of Ibrahim in Bhadreswar, constructed between 1159 and 1175 AD. Chhatri are found particularly within Mughal architecture. The most notable surviving examples today are to be found at Humayun's Tomb in Delhi and the Taj Mahal in Agra. The Berar Sultanate in the Deccan added chhatris on buildings in its various capitals. Chhatri have also been used in Rajasthan and other parts of the Indian Subcontinent by both Muslim and Hindu rulers. Its origins are, however, Indo-Islamic. While chhatri in Shekhawati may consist of a simple structure of one dome raised by four pillars to a building containing many domes and a basement with several rooms. In some places, the interior of the chhatri is painted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acoustics
Acoustics is a branch of physics that deals with the study of mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics technology may be called an Acoustical engineering, acoustical engineer. The application of acoustics is present in almost all aspects of modern society with the most obvious being the audio and noise control industries. Hearing (sense), Hearing is one of the most crucial means of survival in the animal world and speech is one of the most distinctive characteristics of human development and culture. Accordingly, the science of acoustics spreads across many facets of human society—music, medicine, architecture, industrial production, warfare and more. Likewise, animal species such as songbirds and frogs use sound and hearing as a key element of mating rituals or for marking territories. Art, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Church Architecture
Church architecture refers to the architecture of buildings of churches, convents, seminaries etc. It has evolved over the two thousand years of the Christian religion, partly by innovation and partly by borrowing other architectural styles as well as responding to changing beliefs, practices and local traditions. From the birth of Christianity to the present, the most significant objects of transformation for Christian architecture and design were the great churches of Byzantium, the Romanesque abbey churches, Gothic cathedrals and Renaissance basilicas with its emphasis on harmony. These large, often ornate and architecturally prestigious buildings were dominant features of the towns and countryside in which they stood. However, far more numerous were the parish churches in Christendom, the focus of Christian devotion in every town and village. While a few are counted as sublime works of architecture to equal the great cathedrals and churches, the majority developed along si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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