baffle

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baffle

a plate or mechanical device designed to restrain or regulate the flow of a fluid, the emission of light or sound, or the distribution of sound, esp in a loudspeaker or microphone

Baffle

An opaque or translucent element used to diffuse or shield a surface from direct or unwanted light.

Baffle

 

an installation in the afterbay of an overflow dam that changes the direction of the flow and spreads the width of the water stream when only some of the spillway apertures in the dam are functioning. The basic purpose of a baffle is to ensure a fairly uniform distribution of the flow velocities and to reduce them on the downstream apron. A distinction is made between a ramp baffle (continuous or slotted), which is installed along the entire width of the water apron, and a baffle formed of piers, which is placed at an angle to the water stream.

baffle

[′baf·əl]
(electricity)
Device for deflecting oil or gas in a circuit breaker.
(electronics)
An auxiliary member in a gas tube used, for example, to control the flow of mercury particles or deionize the mercury following conduction.
(engineering)
A plate that regulates the flow of a fluid, as in a steam-boiler flue or a gasoline muffler.
(engineering acoustics)
A cabinet or partition used with a loudspeaker to reduce interaction between sound waves produced simultaneously by the two surfaces of the diaphragm.

baffle

1. A plate used to control the flow of a liquid.
2. An opaque or translucent plate used to shield a light source from direct view at certain angles; a light baffle.
3. A flat deflector or obstruction designed to reduce sound transmission.
4. A plate that retards and/or changes the direction of the flow of air, air-gas mixtures, or flue gases.

baffle

baffle
A fuel tank with baffle plates.
baffleclick for a larger image
baffleclick for a larger image
baffle
i. A series of partitions in a fuel tank to control the rapid flow of fuel and prevent its sloshing. These partitions have holes that allow the fuel to feed to the tank outlet, but they keep the fuel from surging enough to uncover the fuel outlet.
ii. A partition separating the upper portion of the tank that prevents oil pump cavitation as oil tends to rush to the top of the tank during deceleration periods. The baffle is fitted with a weighted swirl outlet control valve that is free to swing below the baffle. The valve closes when oil at the bottom of the tank rushes up when the aircraft decelerates.
iii. A sheet metal shield used to direct the flow of air between and around the cylinders of an air-cooled reciprocating engine.
iv. A partial partition in the pitot system to trap moisture and any solid matter as well as to reduce turbulence.
References in periodicals archive ?
Brilliant against Australia and bafflingly weak against South Africa - the key for England over the next couple of months is to find the consistency to challenge for top spot.
Their new, eponymous album, though, explores a bafflingly wide area of styles and influences.
The latest defeat came at Eastbourne by a 50-40 scoreline on Saturday, and whereas against Belle Vue the Coventry top four were bafflingly inconsistent, they all performed at Arlington but had no back-up at reserve.
Most of us grew up in a culture where bookmakers cut prices to reduce demand, but bafflingly the reverse can now happen, particularly via betting exchanges.
That 'difference' began bafflingly with an unexplained brief solo performance from a man (who may well have just walked in off the street) in a long jacket and flat cap playing a mandolin.
We were on the QE2," replied John's dad, bafflingly, by way of a defence.
As would families with children at schools which were bafflingly closed because classroom assistants walked out.
The Wales that went to the polls on Thursday was a wide-eyed, sparky-tailed black Labrador and just as bafflingly unpredictable.
Bafflingly, part of it features folk mimicking birdsong.
And with regards to the complex drama--about a psychiatrist suffering a midlife crisis, bafflingly marketed with a naked photo of star Hank Azaria--Greenblatt says the reported 456,000 viewers is not representative of how many people actually saw the episode.
Church have been bafflingly inconsistent so far this season.
The culture which develops on the new soil must therefore be bafflingly alike and different from the parent culture: it will be complicated sometimes by whatever relations are established with some native race and further by immigration from other than the original source.