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Axial Flow Valve
The axial flow valve, or Thayer valve, is a brass instrument valve design for trombone F attachments, patented in 1978 by Orla Ed Thayer. Designed with assistance from Zigmant Kanstul to replace the traditional rotary valve, it was a revolution in trombone valve and instrument design. Combined with open-wrap tubing, it eliminates the impedance caused by tight tubing bends, improving the airflow through the instrument and the open "feel" perceived by the player. Problem When engaged, a rotary valve deflects the air flow through extra valve tubing, using tight, small radius bends of at least 90° angles, leading to a stuffy response and audible tone colour changes, compared to the "open" instrument. These drawbacks are especially noticeable on the trombone, since its characteristic timbre results directly from its cylindrical bore and almost completely straight construction. Valve tubing aside, there are only two bends, one each in the slide and bell section. In contrast, the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axial Flow Valve On Tenor Trombone
{{disambiguation ...
Axial may refer to: * one of the anatomical directions describing relationships in an animal body * In geometry: :* a geometric term of location :* an axis of rotation * In chemistry, referring to an axial bond * a type of modal frame, in music * axial-flow, a type of fan * the Axial Age in China, India, etc. * Axial Seamount and submarine volcano off Oregon, USA * Axial, Colorado, a ghost town See also *Axiality (other) *Axis (other) An axis (plural ''axes'') is an imaginary line around which an object rotates or is symmetrical. Axis may also refer to: Mathematics * Axis of rotation: see rotation around a fixed axis *Axis (mathematics), a designator for a Cartesian-coordinate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bass Trombone
The bass trombone (german: Bassposaune, it, trombone basso) is the bass instrument in the trombone family of brass instruments. Modern instruments are pitched in the same B♭ as the tenor trombone but with a larger bore, bell and mouthpiece to facilitate low register playing, and usually two valves to fill in the missing range immediately above the pedal tones. History The earliest bass trombones were the bass sackbuts, usually pitched in G, F, or E♭ below the B♭ tenor. They had a smaller bore and less flared bell than modern instruments, and a longer slide with an attached handle to allow slide positions otherwise beyond the reach of a fully outstretched arm. The earliest known surviving specimen is an instrument in G built in Germany in 1593. This instrument matches descriptions and illustrations by Praetorius from his 1614–20 ''Syntagma Musicum''. These bass sackbuts were sometimes called , , and (Old German, , referring to intervals below B♭), though sometimes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Horn
The French horn (since the 1930s known simply as the horn in professional music circles) is a brass instrument made of tubing wrapped into a coil with a flared bell. The double horn in F/B (technically a variety of German horn) is the horn most often used by players in professional orchestras and bands, although the descant and triple horn have become increasingly popular. A musician who plays a horn is known as a list of horn players, horn player or hornist. Pitch is controlled through the combination of the following factors: speed of air through the instrument (controlled by the player's lungs and thoracic diaphragm); diameter and tension of lip aperture (by the player's lip muscles—the embouchure) in the mouthpiece; plus, in a modern horn, the operation of Brass instrument valve, valves by the left hand, which route the air into extra sections of tubing. Most horns have lever-operated rotary valves, but some, especially older horns, use piston valves (similar to a trumpet's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Lindberg
Christian Lindberg (born 15 February 1958) is a Swedish trombonist, conductor and composer, Biography Early life and career Lindberg was born in Danderyd. As a youth, he learned to play the trumpet, and subsequently began to learn the trombone at age 16. He originally borrowed a trombone to join his friends' Dixieland jazz group, inspired by records of Jack Teagarden. He attended the Royal Swedish Academy of Music, where his teachers included Sven-Erik Eriksson. By age 18, he had obtained a professional position in the Royal Swedish Opera Orchestra. At age 20, he left his orchestral career behind to study to become a full-time soloist. He studied with John Iveson at the Royal College of Music (1979–1980) and with Ralph Sauer and Roger Bobo in Los Angeles (1983). Professional career In 1981, Lindberg won the Nordic Soloists' Biennale competition. His concert debut was in 1984 with the Trombone Concerto by Henri Tomasi. That same year, he signed a 3-CD recording contrac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hagmann Valve
The Hagmann Free-Flow Valve is a trademarked brass instrument valve design developed by Swiss musician and instrument technician René Hagmann, first introduced for trombone F attachments in 1990. His intention was to address some of the geometrical limitations of the regular rotary valve, as well as the reliability and maintenance issues of the popular Thayer axial flow valve that arise from its relatively complex design. A standard rotary valve turns the air flow as much as 90 degrees when it is engaged. This does not substantially affect the sound of instruments like the French Horn which already have many turns in the air flow, but part of the characteristic sound of the trombone comes from its long, straight air flow. The angles on a Hagmann valve are dramatically less (60 to 66 degrees) which makes it much easier for the player to maintain proper tone with the valve engaged. While the Hagmann Valve does not achieve as low an angle as the Thayer Valve (which can be as low as 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arms Race
An arms race occurs when two or more groups compete in military superiority. It consists of a competition between two or more states to have superior armed forces; a competition concerning production of weapons, the growth of a military, and the aim of superior military technology, the term is also used to describe any long-term escalating competitive situation where each competitor or competitive group focuses on out-doing others. Unlike a sporting race, which constitutes a specific event with winning interpretable as the outcome of a singular project, arms races constitute spiralling systems of on-going and potentially open-ended behavior. The existing scholarly literature is divided as to whether arms races correlate with war. International-relations scholars explain arms races in terms of the security dilemma, rationalist spiral models, states with revisionist aims, and deterrence models. Examples Pre-First World War naval arms race From 1897 to 1914, a nav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vincent Bach Corporation
The Vincent Bach Corporation is a US manufacturer of brass instruments that began early in the early Twentieth Century and still exists as a subsidiary of Conn-Selmer, a division of Steinway Musical Instruments. The company was founded in 1918 by Austrian-born trumpeter Vinzenz Schrottenbach (Vincent Bach). Vincent Bach Vinzenz Schrottenbach (sometimes misspelled "Vincenz Schrotenbach") was born in Baden near Vienna in 1890. As a child he received training on violin, trumpet and bugle. By age 12 he had concentrated on the trumpet.Priestley, Brian, Dave Gelly, Tony Bacon, The sax & brass book, Miller Freeman Books, San Francisco, CA, 1998, p. 1970 After he graduated from Maschinenbauschule (Mechanical Engineering School, Ansbach) with an engineering degree,History of Bach Stradivarius he entered into |
Teflon
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. It is one of the best-known and widely applied PFAS. The commonly known brand name of PTFE-based composition is Teflon by Chemours, a spin-off from DuPont, which originally discovered the compound in 1938. Polytetrafluoroethylene is a fluorocarbon solid, as it is a high-molecular-weight polymer consisting wholly of carbon and fluorine. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons exhibit only small London dispersion forces due to the low electric polarizability of fluorine. PTFE has one of the lowest coefficients of friction of any solid. Polytetrafluoroethylene is used as a non-stick coating for pans and other cookware. It is non-reactive, partly because of the strength of carbon–fluorine bonds, so it is often used in containers and pipework for reactive and corrosive chemicals. Where used as a lubricant, PT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thayer Valves (independent) On Bass Trombone
Thayer may refer to: Places ;United States * Thayer, Illinois * Thayer, Indiana * Thayer, Iowa * Thayer, Kansas * Thayer, Michigan * Thayer, Missouri * Thayer, Nebraska * Thayer, West Virginia * Thayer County, Nebraska * Thayer Street, Providence, Rhode Island * Thayer Township, Thurston County, Nebraska * Mount Thayer, a mountain in the Santa Cruz Mountains of California Education * Thayer Academy in Braintree, Massachusetts * Thayer Hall, a Harvard University dormitory * Thayer Learning Center, Kidder, Missouri * Thayer School of Engineering, Dartmouth College Other * Thayer (name), including a list of people with the name * Thayer's gull * Thayer Valve, a valve for trombones * C.A. Thayer, a schooner preserved at the San Francisco Maritime National Historical Park. See also * Justice Thayer (other) Justice Thayer may refer to: * Andrew J. Thayer, associate justice of the Oregon Supreme Court * John M. Thayer (judge), associate justice of the Connecticut Supreme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precession
Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler angle defines the rotation itself. In other words, if the axis of rotation of a body is itself rotating about a second axis, that body is said to be precessing about the second axis. A motion in which the second Euler angle changes is called ''nutation''. In physics, there are two types of precession: torque-free and torque-induced. In astronomy, ''precession'' refers to any of several slow changes in an astronomical body's rotational or orbital parameters. An important example is the steady change in the orientation of the axis of rotation of the Earth, known as the precession of the equinoxes. Torque-free Torque-free precession implies that no external moment (torque) is applied to the body. In torque-free precession, the angular momentum is a constant, but the angular velocit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galvanic Corrosion
Galvanic corrosion (also called bimetallic corrosion or dissimilar metal corrosion) is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, in the presence of an electrolyte. A similar galvanic reaction is exploited in primary cells to generate a useful electrical voltage to power portable devices. This phenomenon is named after Italian physician Luigi Galvani (1737-1798). Overview Dissimilar metals and alloys have different electrode potentials, and when two or more come into contact in an electrolyte, one metal (that's more reactive) acts as anode and the other (that's less reactive) as cathode. The electropotential difference between the reactions at the two electrodes is the driving force for an accelerated attack on the anode metal, which dissolves into the electrolyte. This leads to the metal at the anode corroding more quickly than it otherwise would and corrosion at the cathode being inhibited. The presenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brass Instrument Axial Flow Valve Diagram
Brass is an alloy of copper (Cu) and zinc (Zn), in proportions which can be varied to achieve different mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure. Brass is similar to bronze, another copper alloy, that uses tin instead of zinc. Both bronze and brass may include small proportions of a range of other elements including arsenic (As), lead (Pb), phosphorus (P), aluminium (Al), manganese (Mn), and silicon (Si). Historically, the distinction between the two alloys has been less consistent and clear, and modern practice in museums and archaeology increasingly avoids both terms for historical objects in favor of the more general "copper alloy". Brass has long been a popular material for decoration due to its bright, gold-like appearance; being used for drawer pulls and doorknobs. It has also been widely used to make utensils because of its low melting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
