accelerator

Definitions

  • WordNet 3.6
    • n accelerator a valve that regulates the supply of fuel to the engine
    • n accelerator a scientific instrument that increases the kinetic energy of charged particles
    • n accelerator a pedal that controls the throttle valve "he stepped on the gas"
    • n accelerator (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
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Webster's Revised Unabridged Dictionary
  • Interesting fact: In only eight minutes, the Space Shuttle can accelerate to a speed of 27,000 kilometres per hour.
    • n Accelerator One who, or that which, accelerates. Also as an adj.; as, accelerator nerves.
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Century Dictionary and Cyclopedia
  • Interesting fact: Fleas can accelerate 50 times faster than the space shuttle.
    • n accelerator One who or that which accelerates; a hastener. Hence— In England, a post-office van. In anatomy, a muscle, the accelerator urinæ, which expedites the discharge of urine. In photography: Any substance or device which shortens the time of exposure of a sensitized plate or paper to the light, in either the camera or the printing-frame. Any chemical which may be added to the developing solution to shorten the time necessary for development, or, by increasing the normal efficiency of the developer, to lessen the requisite time of exposure. An accelerating gun. See accelerate.
    • n accelerator A device in a motor-car by which the operator may render inoperative the speed governor of the motor. If the governor is of the centrifugal type, as the speed increases the balls or weights fly outward against the action of a spring. The accelerator increases the tension of the spring or draws the balls inward directly, so that the governor ceases to act to close the throttle or regulate speed as the motor increases its number of revolutions above the limit set by the normal tension of the springs.
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Chambers's Twentieth Century Dictionary
  • Interesting fact: If a car is travelling at 55 miles per hour it will travel 56 feet before the driver can shift his foot from the accelerator to the brake.
    • n Accelerator one who or that which accelerates: a light van to take mails between a post-office and a railway station
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Quotations

  • Menander of Athens
    Menander of Athens
    “The school of hard knocks is an accelerated curriculum.”
  • Michael J. Gelb
    Michael J. Gelb
    “... by stretching yourself beyond your perceived level of confidence you accelerate your development of competence.”

Etymology

Chambers's Twentieth Century Dictionary
L. accelerāre, -ātumad, to, celer, swift. See Celerity.

Usage

In literature:

The chauffeur flung away his cigarette, drew on his gauntlets and accelerated his engine.
"The Air Trust" by George Allan England
It is said, his death was accelerated by the news of King Charles' execution.
"Minstrelsy of the Scottish Border, Vol. II (of 3)" by Walter Scott
The remarkable feature in all our records is the great acceleration in the increase in the years since the disaster of 1906.
"A Backward Glance at Eighty" by Charles A. Murdock
And wet territory voted dry will bring about a greatly accelerated patronage of the photoplay houses.
"The Art Of The Moving Picture" by Vachel Lindsay
Strive, my dear friend, to accelerate the tardy steps of justice.
"Beethoven's Letters 1790-1826, Volume 1 of 2" by Lady Wallace
Others not so brave prefer an accelerated retreat, only stopping now and again to throw a stone at the pursuers.
"Corea or Cho-sen" by A (Arnold) Henry Savage-Landor
He also calculated the "centrifugal" accelerations in a straight line.
"Our Legal Heritage, 5th Ed." by S. A. Reilly
They could see the train accelerating its speed.
"The Covered Wagon" by Emerson Hough
Thus the faith of the churches multiplies and accelerates itself.
"American Missionary, Volume XLII. No. 11. November 1888" by Various
Simple musical sounds with no emotional content accelerated the respiration without changing its regularity or amplitude.
"Studies in the Psychology of Sex, Volume 4 (of 6)" by Havelock Ellis
Upon rising, after the introductory services, I could perceive that my pulse and breathing were accelerated.
"Atlantic Monthly, Vol. XII. September, 1863, No. LXXI." by Various
Involuntarily he catches at the seats, expecting a great acceleration of speed.
"Scientific American Supplement, No. 821, Sep. 26, 1891" by Various
Enlightenment, then, will produce a pure faith, which will in time react on society, and push it forward with accelerated speed.
"Gold, Sport, And Coffee Planting In Mysore" by Robert H. Elliot
It retards reform for a season, to be sure, but later it accelerates it.
"Evolution Of The Japanese, Social And Psychic" by Sidney L. Gulick
As you may have noticed, it was constantly accelerated.
"The Girl in the Golden Atom" by Raymond King Cummings
It seemed to Lake that the years came and went ever faster as the Old Ones dwindled in numbers at an accelerating rate.
"Space Prison" by Tom Godwin
The pressure was building now, as we blasted around in a hairpin curve, our acceleration picking up fast.
"Greylorn" by John Keith Laumer
He was squashed back into his couch under four gees' acceleration.
"Pushbutton War" by Joseph P. Martino
The acceleration made the muscles at the front of Joe's throat ache as he held his head upright against it.
"Space Platform" by Murray Leinster
The pressure of acceleration mounted.
"The Planet Strappers" by Raymond Zinke Gallun
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In poetry:

Not that 'twould crown with joy my life,
That Bowden, or that Bowden's wife,
Brought me my daily pickings;
Though she, accelerating Fate,
Decrees the scanty mortal date
Of turkeys and of chickens!
"Ode To Dragon" by Hannah More
But Rowland,—no, nor Oliver,-—
Could get electromotive force,
Which fact and reason both aver,
Has change of some kind as its source,
Out of a disk in swift rotation
Without the least acceleration.
"Answer To Tait" by James Clerk Maxwell
- Lady, the destiny of minor powers,
Who would recast us, is but to convulse:
You enter on a strife that frets and sours;
You can but win sick disappointment's hue;
And simply an accelerated pulse,
Some tonic you have drunk moves you.
"A Ballad Of Fair Ladies In Revolt" by George Meredith

In news:

The flywheel inertia was sized to require 3 sec to accelerate the motor from 0 rpm to 2400 rpm while the pump and motor operate at rated, 2400 psid, differential pressure.
Czech inflation accelerated to the fastest pace in three years in January, even after the economy entered recession, because of a sales-tax increase.
Toyota is the newest member of the Linux Foundation, the organization aimed at accelerating the growth of Linux.
Cause of the accelerated crisis.
It is the third Triangle business accelerator to pull the plug on efforts to help entrepreneurs turn ideas into viable businesses.
Kaolin Global Demand to Accelerate.
Switzerland's KOF economic institute cut its growth forecasts for 2012 and 2013 on Friday, citing a spillover from the global economic slowdown, but still sees the pace of growth accelerating over the course of next year.
Sweden Krona Jumps as Rate Cut Calls Fade on Accelerating Growth.
Metro is accelerating its efforts to improve safety and return the system to a state of good repair.
Fed President Jeff Lacker expects US economic growth to accelerate to about 3% next year.
89,665 Acceleration: 0-60 mph in about 5.6 seconds Estimated mpg: 13 to 18 Standout: Easily fords deep water crossings.
In order to improve your change of direction and lateral speed it's critical to have great overall body awareness, stability and learn proper deceleration/acceleration mechanics.
The House of Representatives has voted to begin financing a $177.8 million accessory for the world's most powerful particle accelerator in the hope of finding an elusive subnuclear particle called the "top quark".
Record investment in German particle accelerator FAIR.
Housed in a 27km circular tunnel beneath the Franco-Swiss countryside on the outskirts of Geneva, the LHC is the world's most powerful particle accelerator, and the pride and joy of CERN, the main European particle-physics laboratory.
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In science:

The top of the bubble on the other hand is prone to develop Rayleigh-Taylor instabilities, as a heavy fluid (the ambient medium) is accelerated on top of a light fluid (the bubble), with the gravitational acceleration pointing toward the light medium (toward the center of the cluster).
Constraining the Nature of X-ray Cavities in Clusters and Galaxies
This acceleration diminishes the effect of the gravitational acceleration, leading to a suppressed onset of RT instabilities.
Constraining the Nature of X-ray Cavities in Clusters and Galaxies
We use the accelerated chain in the proof to firstly prove the accelerated chain mixes quickly, then to bound the waiting time at each step to obtain a mixing time bound for the zero chain.
Random Quantum Circuits are Approximate 2-designs
It is known that the work on general theory of relativity began with Equivalence Principle (EP), in which gravitational acceleration was held a priori indistinguishable from acceleration caused by mechanical forces; as a consequence, gravitational mass was therefore identical to inertial mass.
Experimental Tests of General Relativity
STEP will test the composition independence of gravitational acceleration for cryogenically controlled test masses by searching for a violation of the EP with a fractional acceleration accuracy of one part in 1018 .
Experimental Tests of General Relativity
We see that this form does not correspond to what we know to be the real components of the acceleration in polar coordinates, and, moreover, its components are not even homogeneous in the dimensions, and Aθ does not even have the dimension of an acceleration.
Higher-Order Theories of Gravitation
Pioneer 10 and 11 Doppler data is not accurate enough to distinguish between a constant acceleration and acceleration proportional to the remaining plutonium in the RTGs.
The Anomalous Acceleration of the Pioneer Spacecrafts
Such conversion is likely to happen at the SNR shocks, where particles are believed to be accelerated up to ultrarelativistic energies via diffusive shock acceleration – .
Gamma Ray Astronomy and the Origin of Galactic Cosmic Rays
In fact, the gas constituting molecular clouds is mostly neutral, which means that the magnetic turbulence on which particles acceleration relies, can be effectively damped [101], [102], potentially reducing both the acceleration efficiency and t he maximum energy of accelerated particles.
Gamma Ray Astronomy and the Origin of Galactic Cosmic Rays
Multi–PeV protons can be accelerated only during a relative ly short period of the SNR evolution, namely, at the end of the free –expansion phase/beginning of the Sedov phase, whe n the shock velocity is high enough to allow sufficiently high acceleration rate.
Gamma Ray Astronomy and the Origin of Galactic Cosmic Rays
Future perspectives: theory The non linear theory of diffusive shock acceleration gives us a satisfactory description of how particles are accelerated at shocks and has been successfully applied to model the multiwavelength emission from SNRs (see e.g. , ).
Gamma Ray Astronomy and the Origin of Galactic Cosmic Rays
Supporting this idea is the believe that the diffusive shock acceleration (DSA) mechanism is capable of accelerating particles to above 100 TeV in young and middle age SNRs.
Dots, clumps and filaments: the intermittent images of synchrotron emission in random magnetic fields of young supernova remnants
Here x = a/a0 , the ratio of the actual acceleration to the acceleration parameter in MOND.
Necessity of Dark Matter in Modified Newtonian Dynamics within Galactic Scales? - Testing the Covariant MOND in Elliptical Lenses
When describing the wind acceleration using a β -velocity law, a typical value for the slow acceleration of an LBV wind would be β = 4 (Barlow & Cohen 1977; Pauldrach & Puls 1990).
3D modelling of the colliding winds in Eta Carinae - evidence for radiative inhibition
To test whether this is an important factor we compared simulations adopting accelerating and instantaneously accelerated winds and found that the difference in attenuation was small at all phases, and for all lines of sight.
3D modelling of the colliding winds in Eta Carinae - evidence for radiative inhibition
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