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The Collaborative International Dictionary
Diffuser

Diffuser \Dif*fus"er\, n. One who, or that which, diffuses.

Wiktionary
diffuser

n. 1 Any person or thing that diffuses. 2 A device designed to diffuse a scent efficiently.

WordNet
diffuser
  1. n. baffle that distributes sound waves evenly [syn: diffusor]

  2. optical device that distributes the light of a lamp evenly [syn: diffusor]

Wikipedia
Diffuser (band)

Diffuser is a rock band from Long Island, New York, that was formed in 1994 by Tomas Costanza (guitar/vocals), Anthony Cangelosi (guitar), Lawrence Sullivan (bass) and Billy Alemaghides (drums). Originally the band was called Flu 13 and released a 7-inch entitled Edgar's Airwaves and an album entitled Spin Cycle before being signed to The Medicine Label. After being signed they released their second album titled In the Foul Key of V.

The band signed with major label Hollywood Records in 2001 and changed their name to Diffuser. In 2001 the band released their first album on Hollywood Records titled Injury Loves Melody. Their single "Karma" was included on the Mission: Impossible II soundtrack; it peaked at number 20 on the Billboard Mainstream Rock Tracks chart and No. 26 on the Modern Rock Tracks chart.

Lawrence and Billy left the band in 2003 and were replaced by Peter Schojan and Dan Leo on bass and drums respectively. In March the band toured the country with Simple Plan, Gob and Madcap. Their second album, Making the Grade, was released in July of that year. The songs "I Wonder" and "Get It On" were used in the 2003 movie Freaky Friday. The song "Get It On" also appeared on the soundtrack for the Outlaw Volleyball video game. The first 150,000 copies of the video game contained a bonus music sampler from Diffuser.

In the fall of that year the band joined Hoobastank and The All-American Rejects on the Nokia Unwired Tour. The band did their final US tour in January 2004 with Spitalfield and Silverstein, followed by a tour in Japan in March. In April Hollywood Records dropped them, and they disbanded shortly after. Dan later joined Action Action with ex-members of The Reunion Show and Count the Stars. Diffuser has recently gotten back together and, according to their Myspace, plan to release a new album in spring of 2008 and re-release some Flu 13 albums.

Diffuser has recently started recording the new album, posting this on their MySpace page:

The album's title is Sincerely, Wasting Away.

On May 24, 2008, Diffuser uploaded two new songs from the upcoming album on their MySpace page. They are entitled "Falling Down" and "Free".

Diffuser

Diffuser can refer to any device that diffuses in some manner such as:

  • Diffuser (acoustics), a device that scatters reflections of sound across frequencies
  • In aerodynamics
    • Diffuser (automotive), a shaped section of a car's underbody which improves the car's aerodynamic properties. It causes air to escape from the underside of the vehicle faster than above air, working like a wing on an airplane in the opposite direction. Results in improvement of downforce.
    • divergent part of the aspirator
    • divergent part of the flute
    • Part of a jet engine air intake, especially when operated at supersonic speeds
    • the channel between the vanes of a turbine
    • the channel between the vanes of the stator of a centrifugal compressor
  • Diffuser (breathing set part), a device fitted over an underwater breathing set's blow hole to break up the resulting bubbles
  • Diffuser (heat), a cooking item that can be placed above a stove heating element or burner to separate the cooking utensil from the heat source
  • Diffuser (hair), a blowdryer attachment or one-piece device that diffuses heat as it dries the hair
  • Diffuser (optics), a device that diffuses or spreads out or scatters light in some manner
  • Diffuser (sewage), an aerating device for sewage and industrial waste water treatments; a membrane with fine pores, through which fine bubbles are generated by the supply of air through blowers
  • Diffuser (HVAC),a device that slows, and evenly distributes air from a duct into a room while causing minimal discomfort.
  • Diffuser (thermodynamics), a device that controls the characteristics of a fluid at the entrance to a thermodynamic open system
  • Diffusion filter, a specific optical diffuser used in photography
  • Aroma lamp also known as Diffuser, is used to diffuse essential oils in the surroundings.
  • In encryption a diffuser is a data-mixing function.

Diffuser may also refer to:

  • Diffuser (band), a punk rock band from Long Island
Diffuser (optics)

In optics, a diffuser is any device that diffuses or spreads out or scatters light in some manner, to give soft light. Diffuse light can be easily obtained by making light to reflect diffusely from a white surface, while more compact optical diffusers may use translucent objects, and can include ground glass diffusers, teflon diffusers, holographic diffusers, opal glass diffusers, and greyed glass diffusers.

Diffuser (sewage)

An air diffuser or membrane diffuser is an aeration device typically in the shape of a disc, tube or plate, which is used to transfer air and with that oxygen into sewage or industrial wastewater. Oxygen is required by microorganisms/bacteria residents in the water to break down the pollutants. Diffusers use either rubber membranes or ceramic elements typically and produce either fine or coarse bubbles.

Diffuser (heat)

A Heat Diffuser is a cooking utensil that is placed on top of a ring on a cooktop in order to separate the pan/pot from the direct source of heat.

Diffuser (breathing set part)

A diffuser is a device fitted over an underwater breathing set's exhaust hole to break up the resulting bubbles small so they will not be seen from out of the water, and make less noise (see acoustic signature). They are used in:

  • Combat diving (see frogman), to avoid detection by surface guards or by underwater hydrophones.
  • Mostly, in underwater mine operations conducted by clearance divers, to make less noise, as acoustic mines are designed to explode when they detect particular sounds.
  • In marine biology, to avoid disruption of fish behavior.

Designing an adequate diffuser on a rebreather is much easier than on open-circuit scuba.

A system was shown on a Discovery Channel documentary about diving with hammerhead sharks at Cocos Island, Costa Rica. Eddie Paul designed—and in the early 1990s underwater photographers John McKenney and Marty Snyderman tested—a system they called the "scuba muffler", for open-circuit scuba. This system had two large filter stones on the back of the tank with a hose connected to the exhaust ports of the second stage regulator. The two filter stones were mounted on a hinged arm to float above the diver, to set up a depth-pressure-differential suction effect to counteract the extra exhalation pressure needed to breathe out through the diffuser. The scuba muffler cut the exhalation noise by 90%. Closed circuit rebreathers proved more useful in letting divers get near sharks.

Diffuser (thermodynamics)

A diffuser is "a device for reducing the velocity and increasing the static pressure of a fluid passing through a system”. Diffusers are used to slow the fluid's velocity while increasing its static pressure. The fluid's static pressure rise as it passes though a duct is commonly referred to as pressure recovery. In contrast, a nozzle is often intended to increase the discharge velocity and lower pressure while directing the flow in one particular direction.

Frictional effects during analysis can sometimes be important, but usually they are neglected. Ducts containing fluids flowing at low velocity can usually be analyzed using Bernoulli's principle. Analyzing ducts flowing at higher velocities with mach numbers in excess of 0.3 usually require Compressible flow relations.

A typical, subsonic diffuser is a duct that increases in size in the direction of flow. As the duct increases in size, fluid velocity decreases, and static pressure rises. Both mass flow rate and Bernoulli's principle are responsible for these changes in pressure, and velocity.

Diffuser (automotive)

A diffuser, in an automotive context, is a shaped section of the car underbody which improves the car's aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere. It works by providing a space for the underbody airflow to decelerate and expand (in area, density remains constant at the speeds that cars travel) so that it does not cause excessive flow separation and drag, by providing a degree of " wake infill" or more accurately, pressure recovery. The diffuser itself accelerates the flow in front of it, which helps generate downforce.

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Usage examples of "diffuser".

But there's not enough solvents in that diffuser, I think, to melt the suit.

We smoked and drank beer and traded environmental stories for a bit, then I showed him the pictures of the theta-holes, sketched the diffuser, laid out the whole gig.

Once I found the diffuser, I slapped the magnet on and tied myself to that with some rock-climbing webbing.

I have to get the toxics off the bottom of the sea and onto the cathode-ray tubes of the public in order for this kind of gig to work and, because the diffuser was completely hidden, this wouldn't be easy.

Tom swam down to the diffuser and put the pump's intake hose into a diffuser hole, and I hauled the Zode up onto the beach and dragged the pump's output hose into the wading pool.

So, uh, we're shutting the diffuser off now, and I'd recommend that you stop putting wastes into it, for obvious reasons.

Smugglers regularly used them to prevent cursory searches from uncovering contraband, but a little time and a little effort made finding the diffusers easy, and finding one of them meant finding whatever they covered.

  With a reflector, some backfill, a diffuser, she could have made this shot sing.

All of the bulkhead-mounted fittings-- electrical junction boxes, hose reels, hatches and doors, ventilation diffusers, and fluorescent light fixtures-- were in shadow, and his eyesight was further restricted by the limited peripheral vision caused by the mask.

Also there were diffusers constructed of sheets of white cloth stretched taut on frames.

They are the material of great orators, great preachers, impressive diffusers of moral influences.

How does one come up with the design of new nanobots or spaciotemporal diffusers by looking at walls!

Most Wizard-powered starships, like our Starfuries, are equipped with diffusers to prevent this very phenomenon.

The four dustpan-shaped dredge heads beneath its undercarriage scooped up nodules and fed them through semicircular tubes into its diffusers, which sifted out the silt and spat it out through vents behind the machine, leaving behind a small bin of nodules.