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Topic: Quintessence


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In the News (Fri 5 Sep 08)

  
  Welcome to Quintessence Publishing
In its continuing efforts to serve the dental community, Quintessence provides the latest scientific and clinical information in formats designed to meet the varying needs of busy professionals: books, journals, DVDs,videotapes, CD-ROMs, and meetings.
The Quintessence name represents a commitment to quality that is unsurpassed in the dental publishing world.
The first English-language journal, Quintessence International, was launched in 1969 following the opening of the US office near Chicago.
www.quintessencepublishing.co.uk   (165 words)

  
  Quintessence - Wikipedia, the free encyclopedia
In physics, quintessence is a hypothetical form of energy postulated to exist as a possible explanation of observations of an accelerating universe.
In alchemy, quintessence, meaning "fifth element", was another term for aether; it is the substance of which the heavenly bodies were supposed to be composed.
Quintessence and the corresponding adjective quintessential are also used in the figurative sense of "(a thing) that is the perfect example of its kind".
en.wikipedia.org /wiki/Quintessence   (300 words)

  
 Encyclopedia: Quintessence   (Site not responding. Last check: 2007-10-15)
In physics, quintessence is a hypothetical form of dark energy postulated as an explanation of observations of an accelerating universe.
Quintessence, some cosmologists say, is an exotic kind of energy field that pushes particles away from each other, overpowering gravity and the other fundamental forces.
Quintessence became a force to be reckoned with about 10 billion years ago, according to the theory.
www.nationmaster.com /encyclopedia/Quintessence   (888 words)

  
 Info and facts on 'Quintessence (physics)'   (Site not responding. Last check: 2007-10-15)
In physics (The science of matter and energy and their interactions), quintessence is a hypothetical (additional info and facts about hypothetical) form of dark energy (additional info and facts about dark energy) postulated as an explanation of observations of an accelerating universe (additional info and facts about accelerating universe).
In these models, the quintessence field has a density which closely tracks (but is less than) the radiation density until matter-radiation equality (additional info and facts about matter-radiation equality), which triggers quintessence to start behaving as dark energy (additional info and facts about dark energy), eventually dominating the universe.
Some special cases of quintessence are phantom energy (additional info and facts about phantom energy), in which and k-essence (short for kinetic quintessence) which has a non-standard form of kinetic energy (The mechanical energy that a body has by virtue of its motion).
www.absoluteastronomy.com /encyclopedia/q/qu/quintessence_(physics).htm   (261 words)

  
 Quintessence (physics) - Wikipedia, the free encyclopedia
Quintessence is dynamic, and generally has a density and equation of state that varies through time and space.
In these models, the quintessence field has a density which closely tracks (but is less than) the radiation density until matter-radiation equality, which triggers quintessence to start behaving as dark energy, eventually dominating the universe.
Some special cases of quintessence are phantom energy, in which w < −1 and k-essence (short for kinetic quintessence) which has a non-standard form of kinetic energy.
en.wikipedia.org /wiki/Quintessence_(physics)   (202 words)

  
 Quintessence (November 2000) - Physics World - PhysicsWeb
For quintessence, however, the gravitational force is repulsive, and this causes the expansion of the universe to accelerate.
Quintessence is a dynamic, time-evolving and spatially dependent form of energy with negative pressure sufficient to drive the accelerating expansion.
Quintessence, a sublime substance, may permeate the universe, marking an end to the epoch that saw the formation of stars and galaxies, and the beginning of an epoch of cosmic acceleration.
physicsweb.org /article/world/13/11/8   (5471 words)

  
 Dark energy - Wikipedia, the free encyclopedia
Two proposed forms for dark energy are the cosmological constant, a constant energy density filling space homogeneously, and quintessence, a dynamic field whose energy density can vary in time and space.
Scalar fields are predicted by the standard model and string theory, but an analogous problem to the cosmological constant problem (or the problem of constructing models of cosmic inflation) occurs: renormalization theory predicts that scalar fields should acquire large masses.
Some special cases of quintessence are phantom energy, in which the energy density of quintessence actually increases with time, and k-essence (short for kinetic quintessence) which has a non-standard form of kinetic energy.
en.wikipedia.org /wiki/Dark_energy   (2634 words)

  
 A Dark Force in the Universe: Science News Online, April 7, 2001   (Site not responding. Last check: 2007-10-15)
Quintessence takes on a different form and strength depending on what time it is in the universe.
Quintessence, or dark energy, could be a linchpin that holds together both old and new physics.
If quintessence proves correct, then the amount by which space has stretched over the past few billion years is less than if dark energy is the vacuum energy.
www.sciencenews.org /20010407/bob14.asp   (2347 words)

  
 The Official Web Site of Quintessence
In 1997-1998 school year, Brad returned to Andrews and met up with his old buddies from the previous 95-96 group, only this time, the bassist, Benny Regoso's sister was a freshman, and became part of the group along with her roommate.
Brad started writing music in the fall of 1997, and in 1998, for a Valentines banquet, the name "Quintessence" was born, and has stuck ever since.
This band was borne of a one time concert the group played for on a Friday night, in which original music of both Brad and another member were performed.
www.adap.org /~regoso/quintessence/brad.htm   (554 words)

  
 Research - Dark Energy   (Site not responding. Last check: 2007-10-15)
One proposal for a solution to the `Cosmological Constant Problem' is quintessence - an extremely light particle which interacts with other matter only via gravity and whose self-interactions cause it to condense and behave like a slowly-decaying vacuum energy.
The fine-tuning problem is `solved' because the particular value of the vacuum energy today is merely a coincidence related to the age of the Universe.
We are investigating ways in which the specific models and quintessence in general can be either detected, constrained or ruled out via observations of the Universe such as CMB and large-scale structure.
www.thphys.uni-heidelberg.de /home/cosmology/dark.html   (239 words)

  
 SoundStage! Equipment Review - Quintessence Acoustics Standard Loudspeaker (3/1999)
Quintessence suggested a minimum placement of four feet from the rear wall.
Quintessence recommended a listening distance of 9'-10' with the 8' spread, but I preferred a slightly greater distance of 12' or so.
The Quintessence Acoustics Standard speaker is not a speaker whose character you immediately grasp as soon as you burn it in and take your first listen.
www.soundstage.com /revequip/duvall08.htm   (2564 words)

  
 Brewer, E. Cobham. Dictionary of Phrase & Fable. Quintessence.
The ancient Greeks said there are four elements or forms in which matter can exist—fire, or the imponderable form; air, or the gaseous form; water, or the liquid form; and earth, or the solid form.
This element, which flew upwards at creation, and out of which the stars were made, was called the fifth essence; quintessence therefore means the most subtile extract of a body that can be procured.
It is quite an error to suppose that the word means an essence five times distilled, and that the term came from the alchemists.
www.bartleby.com /81/13954.html   (169 words)

  
 Quintessence   (Site not responding. Last check: 2007-10-15)
Lisa hails from a mixed background of both naturalistic and physical theatre training, and throughout her 13 years as a director she has continually sought new ways to integrate text and movement on-stage.
Quintessence is the culmination of the company’s mandate to produce work that not only experiments with the dynamic connecting text, movement and space, but also challenges the audience to open doorways to new possibilities.
Quintessence is produced with financial assistance from the Performing Arts Program of the Laidlaw Foundations and from the Onex Corporation.
www.artword.net /website/Theatre/2001_fall/quintessence.htm   (401 words)

  
 Satya: Restaurant Review: Quintessence
The wait staff at Quintessence are soft-spoken and well-mannered, making a pleasant change from the hurried note-scribbling at so many restaurants.
Although the prices may seem slightly higher than you might expect for uncooked dishes and an unpretentious environment, once you’ve read the menu section about their standards and tasted the flavors, all is justified.
More than a restaurant, Quintessence is also a representation of all that is nutritious and environmentally-friendly about eating vegan, organic and raw food.
www.satyamag.com /rest/quintessence.html   (1015 words)

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