Batten (theater)
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Batten (theater)
In theaters, a batten (also known as a ''bar'' or ''pipe'') is a long metal pipe suspended above the stage or audience from which lighting fixtures, theatrical scenery, and theater drapes and stage curtains may be hung. Battens that are located above a stage can usually be lowered to the stage (flown in) or raised into a fly tower above the stage (flown out) by a fly system. Types Electric An ''electric'' is a batten that incorporates electrical cables above the pipe, often enclosed in a raceway. It typically has power cables for lights and DMX512 data cable for lighting control, and may also have audio cables for microphones. The cables emerge from one end of the batten and continue through a snake to dimmers, control boards, or patchbays. All cable plugs have identifying numbers printed on them so that they can be easily referenced by the lighting control system. Loaded electrics are among the heaviest types of battens, often weighing more than a thousand pounds. Electrics w ...
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DMX512
DMX512 is a standard for digital communication networks that are commonly used to control lighting and effects. It was originally intended as a standardized method for controlling stage lighting dimmers, which, prior to DMX512, had employed various incompatible proprietary protocols. It quickly became the primary method for linking controllers (such as a lighting console) to dimmers and special effects devices such as fog machines and intelligent lights. DMX512 has also expanded to uses in non-theatrical interior and architectural lighting, at scales ranging from strings of Christmas lights to electronic billboards and stadium or arena concerts. It can now be used to control almost anything, reflecting its popularity in all types of venues. DMX512 uses a unidirectional EIA-485 (RS-485) differential signaling at its physical layer, in conjunction with a variable-size, packet-based communication protocol. DMX512 does not include automatic error checking and correctio ...
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Fly System
A fly system, or theatrical rigging system, is a system of rope lines, blocks (pulleys), counterweights and related devices within a theater that enables a stage crew to fly (hoist) quickly, quietly and safely components such as curtains, lights, scenery, stage effects and, sometimes, people. Systems are typically designed to fly components between clear view of the audience and out of view, into the large opening, known as the fly loft, above the stage. Fly systems are often used in conjunction with other theatre systems, such as scenery wagons, stage lifts and stage turntables, to physically manipulate the mise en scène. Theatrical rigging is most prevalent in proscenium theatres with stage houses designed specifically to handle the significant dead and live loads associated with fly systems. Building, occupational safety, and fire codes limit the types and quantity of rigging permitted in a theatre based on stage configuration. Theatrical rigging standards are developed ...
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Rig (stage Lighting)
Stage lighting is the craft of lighting as it applies to the production of theater, dance, opera, and other performance arts.
Stage Lighting Design Principle and Process
Several different types of stage lighting instruments are used in this discipline.
theatrecrafts' Types of Lanterns.
In addition to basic lighting, modern stage lighting can also include special effects, such as Laser lighting display, lasers and fog machines. People who work on stage lighting are commonly referred to as lighting technicians or Lighting designer, lighting designers. The equipment used for stage lighting (e.g. cabling, dimmers, lighting instruments, contr ...
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Shell (theater)
In theater, a shell (also known as an acoustical shell, choral shell or bandshell) is a curved, hard surface designed to reflect sound towards an audience. Often shells are designed to be removable, either rolling away on wheels or lifting into a flyspace. Shells are most commonly used for orchestras, bands and choirs, although they can also be used in any application that requires passive sound amplification. Shells are generally made of hard materials because they are designed to absorb as little sound as possible. History Acoustical shells were developed to focus sound outward in one direction as opposed to the ″sound in the round″ diffused from all sides of the open gazebo bandstand. In the United States they were built in large city parks and amusement parks as bands increased in size. Free−standing outdoor shells in a variety of styles were built starting in the 1890s. Professional architects were often employed to design them with varying degrees of acoustical succe ...
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Gather (sewing)
Gathering turns the edge of a piece of fabric into a bunch of small folds that are held together by a thread close to the edge. Gathering makes the fabric shorter where it is stitched. The whole of the fabric pops into irregular, rolling folds beyond the gathered stitching. Gathering can be done by hand, with a machine, automatically, with elastic, or through channels. Pleating and shirring are two different types of gather sewing. In simple gathering, parallel rows of running stitches are sewn along one edge of the fabric to be gathered. The stitching threads are then pulled or "drawn up" so that the fabric forms small folds along the threads. Gathering seams once involved tedious hand sewing of basting, which was time-consuming, especially with heavy fabric. However, finer gathers could be achieved. Now, a quick and easy way to make a gather is to use a wide zigzag stitch A zigzag stitch is variant geometry of the lockstitch. It is a back-and-forth stitch used where a s ...
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Traveler Curtain
A traveler curtain, also called ''draw curtain'', ''bi-parting curtain'', or just ''traveler'', is the most common type of front curtain used in theaters. Traveler curtains remain at a fixed elevation and open and close horizontally, break up and meet in the middle, and consequently require a minimum of fly space. The curtains are typically made of velvet and decorated with a series of vertical box pleats along the top edge. Traveler curtains may be rigged with or without an operating line. When rigged with an operating line, they may be motorized or operated manually. They are referred to as ''walk-draw'' or ''walk-along'' curtains when rigged without an operating line. When opened and closed manually with an operating line, they are called ''manual'' curtains. They are the least costly kind of theater curtain to construct and relatively simple to operate. Construction Traveler curtains are suspended on a series of short chains called ''trim chains''. Each trim chain hangs f ...
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Front Curtain
A front curtain, also known as a (front-of-)house curtain, act curtain, grand drape, main curtain or drape, proscenium curtain, or main rag is the stage curtain or curtains at the very front of a theatrical stage, separating it from the house. The front curtain is usually opened at the beginning of a performance to reveal the stage set and closed for intermissions as well as the end of a performance. The most common material for the front curtain is a heavy velour material, often with pleated fullness sewn into the fabric to create a more opulent appearance. Types There are several styles of house curtains, which vary in construction, operation, and cost. Depending on a curtain's type, its fabric may be flat or pleated, and it may drape, hang, or do both. Some types open with the full curtain rising out, either via a fly system or by gathering upwards with lines; other types part in the centre and either travel horizontally on a track or are pulled out diagonally using lines ( ...
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Spring Steel
Spring steel is a name given to a wide range of steels used in the manufacture of different products, including swords, saw blades, springs and many more. These steels are generally low-alloy manganese, medium-carbon steel or high-carbon steel with a very high yield strength. This allows objects made of spring steel to return to their original shape despite significant deflection or twisting. Grades Many grades of steel can be hardened and tempered to increase elasticity and resist deformation; however, some steels are inherently more elastic than others: Applications * Applications include piano wire (also known as music wire) such as ASTM A228 (0.80–0.95% carbon), spring clamps, antennas, springs (e. g. vehicle coil springs or leaf springs), and s-tines. * Spring steel is commonly used in the manufacture of swords with rounded edges for training or stage combat, as well as sharpened swords for collectors and live combat. * Spring steel is one of the most popular mate ...
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Snake (electrical)
An audio multicore cable (often colloquially referred to as a multicore, snake cable or snake) is a thick cable which usually contains 4–64 individual audio cables inside a common, sturdy outer jacket. Audio multicore cables are used to convey many audio signals between two locations, such as in audio recording, sound reinforcement, PA systems and broadcasting. Multicores often route many signals from microphones or musical instruments to a mixing console, and can also carry signals from a mixing console back to speakers. In audio engineering, the term ''multicore'' may refer to the several things: *an unterminated length of multicore cable intended for analog audio signals (a type of cable harness) *a terminated cable, with a multipin connector or many individual connectors *the entire assembly of a terminated multicore cable and stage box Applications Multicores usually create a link between the stage and sound desk, or live room and control room. When used in sound rei ...
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Power Cable
A power cable is an electrical cable, an assembly of one or more electrical conductors, usually held together with an overall sheath. The assembly is used for transmission of electrical power. Power cables may be installed as permanent wiring within buildings, buried in the ground, run overhead, or exposed. Power cables that are bundled inside thermoplastic sheathing and that are intended to be run inside a building are known as NM-B (nonmetallic sheathed building cable). Flexible power cables are used for portable devices, mobile tools, and machinery. History The first power distribution system developed by Thomas Edison in 1882 in New York City used copper rods, wrapped in jute and placed in rigid pipes filled with a bituminous compound. Although vulcanized rubber had been patented by Charles Goodyear in 1844, it was not applied to cable insulation until the 1880s, when it was used for lighting circuits. Rubber-insulated cable was used for 11,000-volt circuits in 1897 install ...
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Theater (structure)
A theater, theatre or playhouse, is a structure where theatre, theatrical works, performing arts and musical Concert, concerts are presented. The theater building serves to define the performance and audience spaces. The facility usually is organized to provide support areas for performers, the technical crew and the audience members, as well as the stage where the performance takes place. There are as many types of theaters as there are types of performance. Theaters may be built specifically for a certain types of productions, they may serve for more general performance needs or they may be adapted or converted for use as a theater. They may range from open-air amphitheaters to ornate, cathedral-like structures to simple, undecorated rooms or black box theaters. A theatre used for opera performances is called an opera house. A theater is not required for performance (as in site-specific theatre, environmental theater or street theatre, street theater), this article is about s ...
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