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Baffle Chambers2
Baffle or baffles may refer to: * Baffle (liquid mixing), auxiliary devices employed in tank which suppress the effects of slosh dynamics * Baffle (heat transfer), a flow-directing or obstructing vane or panel used in some industrial process vessels (tanks) * Baffle (medicine), a tunnel or wall surgically constructed within the heart or primary blood vessels to redirect blood flow * Baffles (submarine), the blind spot in a submarine's sonar created by the body of the submarine * ''Baffle'' or ''All-Star Baffle'', a 1973–74 revival of ''PDQ'' (game show), where contestants had to guess phrases from a short combination of letters * Baffle gate, another name for turnstile * Optical baffle, shroud protecting the optics of an imaging system from being disturbed from stray light * Sound baffle, any object designed to reduce airborne sound ** Components in a loudspeaker enclosure used to negate the out-of-phase sound waves from the rear of the loudspeaker ** Components in a suppres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baffle (liquid Mixing)
A slosh baffle is a device used to dampen the adverse effects of liquid slosh in a tank. Slosh baffles have been implemented in a variety of applications including tanker trucks, and liquid rockets, although any moving tank containing liquid may employ them. Baffle rings Baffle rings are rigid rings placed within the inside of a tank to retard the flow of liquid between sections. The location and orifice size of the rings yield varying performance for a given application. See also Baffle blocks References Fluid dynamics {{fluiddynamics-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baffle (heat Transfer)
Baffles are flow-directing or obstructing vanes or panels used to direct a flow of liquid or gas. It is used in some household stoves and in some industrial process vessels (tanks), such as shell and tube heat exchangers, chemical reactors, and static mixers. Baffles are an integral part of the shell and tube heat exchanger design. A baffle is designed to support tube bundles and direct the flow of fluids for maximum efficiency. Baffle design and tolerances for heat exchangers are discussed in the standards of the Tubular Exchanger Manufacturers Association (TEMA). Use of baffles The main roles of a baffle in a shell and tube heat exchanger are to: * Hold tubes in position (preventing sagging), both in production and operation * Prevent the effects of steam starvation, which is increased with both fluid velocity and the length of the exchanger * Direct shell-side fluid flow along the tube field. This increases fluid velocity and the effective heat transfer co-efficient of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baffle (medicine)
A baffle is a surgically created tunnel or wall within the heart or major blood vessels used to redirect the flow of blood. They are used in some types of heart abnormalities that a child is born with known as congenital heart defects. Baffles are usually constructed, at least in part, from a person's own heart tissue, while other methods of redirecting blood using artificial material are known by the more generic term 'conduits'. Baffles can be made between different structures depending on the heart condition that needs to be treated. Dextro-transposition of the great arteries In dextro-transposition of the great arteries, at the initial arterial switch a Jatene procedure is normally done in conjunction to switch the coronary arteries as well, as they originate from the aorta. The Jatene procedure is ideally performed during the second week of life, before the left ventricle adjusts to the lower pulmonary pressure. In cases where the Jatene is not performed in time, the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baffles (submarine)
The baffles is the area in the water directly behind a submarine or ship through which a hull-mounted sonar cannot hear. This blind spot is caused by the need to insulate the sonar array, commonly mounted near the bow, from the noise of the vessel's machinery. During the Cold War, one submarine would frequently attempt to follow another by hiding in its baffles. This led to the practice of "clearing the baffles", that is, turning to observe the blind spot and detect any followers. Related maneuvers included the "Crazy Ivan", a hard turn to clear the baffles and position the submarine to attack any followers, and "Angles and Dangles", a five-hour process of rapid direction and speed changes to ensure that all items aboard were properly secured for hard maneuvering and would not fall or shift suddenly, producing noise that the enemy could detect. The baffles-clearing maneuvers undertaken by Soviet ''Yankee''-class submarines were dubbed "Yankee Doodles". Hiding in a sub's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PDQ (game Show)
''PDQ'' and ''Baffle'' are American television game shows created by Heatter-Quigley Productions. Both shows' objective was for contestant/celebrity teams to guess a given word or phrase in the shortest amount of time with the fewest letters given as possible. ''PDQ,'' syndicated by Four Star Television, aired from September 6, 1965, to September 26, 1969, primarily on NBC- owned-and-operated stations but syndicated in markets where NBC did not own a station. ''PDQ'' was named after its original sponsor, PDQ Chocolate, a flavored drink mix. The show and product shared logos, although on the show the initials stood for "Please Draw Quickly". ''Baffle'' was a revival that aired on NBC from March 26, 1973, to March 29, 1974, without a specific sponsor. ''PDQ'' (1965–69) Personnel Dennis James was the original host, with Monty Hall filling in on at least one occasion in James' absence before ''Let's Make a Deal'' moved to ABC. Kenny Williams was the announcer, and Arlo Hult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turnstile
A turnstile (also called a gateline, baffle gate, automated gate, turn gate in some regions) is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce One-way traffic#One-way traffic of people, one-way human traffic. In addition, a turnstile can restrict passage only to people who insert a coin, ticket, transit pass, security credential, or other method of payment or verification. Modern turnstiles can incorporate biometrics, including retina scanning, fingerprints, and other individual human characteristics which can be scanned. Thus a turnstile can be used in the case of Fare control, paid access (sometimes called a faregate or ticket barrier when used for this purpose), for example to access public transport, a pay toilet, or to restrict access to authorized people, for example in the lobby of an office building. History Turnstiles were originally used, like other forms of stile, to allow human beings to pass while excluding live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Baffle
An optical baffle is an opto-mechanical construction designed to block light from a source shining into the front of an optical system and reaching the image as unwanted light. Principles Optical systems which have stringent requirements on stray light levels often need optical baffles. There are many designs, depending on the desired goals. Generic optical baffle designs and their advantages for stray light control can be classified as reflective, absorbing or refractive; reimaging and nonreimaging systems. References {{reflist Optical devices ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stray Light
Stray light is light in an optical system which was not intended in the design. The light may be from the intended source, but follow paths other than intended, or it may be from a source other than that intended. This light will often set a working limit on the dynamic range of the system; it limits the signal-to-noise ratio or contrast ratio, by limiting how dark the system can be. Ocular straylight is stray light in the human eye. Optical systems Monochromatic light Optical measuring instruments that work with monochromatic light, such as spectrophotometers, define stray light as light in the system at wavelengths (colors) other than the one intended. The stray light level is one of the most critical specifications of an instrument. For instance, intense, narrow absorption bands can easily appear to have a peak absorption less than the true absorption of the sample because the ability of the instrument to measure light transmission through the sample is limited by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sound Baffle
A sound baffle is a construction or device which reduces the strength (level) of airborne sound. Sound baffles are a fundamental tool of noise mitigation, the practice of minimizing noise pollution or reverberation. An important type of sound baffle is the noise barrier constructed along highways to reduce sound levels in the vicinity of properties. Sound baffles are also applied to walls and ceilings in building interiors to absorb sound energy and thus lessen reverberation. Highway noise barriers The technology for accurate prediction of the effects of noise barrier design using a computer model to analyze roadway noise has been available since the early 1970s. The earliest published scientific design of a noise barrier may have occurred in Santa Clara County, California in 1970 for a section of the Foothill Expressway in Los Altos, California. The county used a computer model to predict the effects of sound propagation from roadways, with variables consisting of vehicle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker Enclosure
A loudspeaker enclosure or loudspeaker cabinet is an enclosure (often rectangular box-shaped) in which speaker drivers (e.g., woofers and tweeters) and associated electronic hardware, such as crossover circuits and, in some cases, power amplifiers, are mounted. Enclosures may range in design from simple, homemade DIY rectangular particleboard boxes to very complex, expensive computer-designed hi-fi cabinets that incorporate composite materials, internal baffles, horns, bass reflex ports and acoustic insulation. Loudspeaker enclosures range in size from small "bookshelf" speaker cabinets with woofers and small tweeters designed for listening to music with a hi-fi system in a private home to huge, heavy subwoofer enclosures with multiple or even speakers in huge enclosures which are designed for use in stadium concert sound reinforcement systems for rock music concerts. The primary role of an enclosure is to prevent sound waves generated by the rearward-facing surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suppressor
A silencer, also known as a sound suppressor, suppressor, or sound moderator, is a gun barrel#Muzzle, muzzle device that suppresses the muzzle blast, blast created when a gun (firearm or airgun) is discharged, thereby reducing the sound intensity, acoustic intensity of the muzzle report (sound of a gunshot) and muzzle rise, jump, by modulating the speed and pressure of the propellant gas released from the muzzle. Like other muzzle devices, a silencer can be a detachable accessory mounted to the muzzle or an integral part of the gun barrel, barrel. A typical silencer is a metallic (usually stainless steel or titanium) cylinder (firearms), cylinder containing numerous internal sound baffles, with a hollow bore to allow the bullet to exit normally. During firing, the bullet passes through the bore with little hindrance, but most of the expanding gas ejecta behind it is redirected through a longer and convoluted escape path created by the baffles, prolonging the release time. This ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
