No Gravity may refer to No Gravity or Space Girl , a mission based space combat simulation game No Gravity Kiko Loureiro album No Gravity Kiko Loureiro album , the first solo album by Brazilian power metal guitarrist Kiko Loureiro No Gravity Shontelle album No Gravity Shontelle album , the second studio album by Barbadian R&B singer Shontelle Disambig ... more details
Gravity control may refer to one of the following Anti gravityGravity shielding United States gravity control propulsion initiative disambig ... more details
Gravity Probe may refer to Gravity Probe A Gravity Probe B disambig Long comment to prevent listing on Special Shortpages.......................................................................... more details
Wiktionary gravity gravitation Gravity , or gravitation, is the mass proportionate force of attraction among matter. Gravity may also refer to TOC right Science and technology Gravity alcoholic beverage , the concentration of ethanol in an alcoholic beverage Gravity chemistry , the density of a fluid Gravity software , a program designed to simulate the motions of planetary bodies Gravity Technologies , a Hungary based IT provider Gravity Twitter client a software application for mobile phones with the Symbian ... Gravity film Gravity film , an upcoming American film Gravity TV series Gravity TV series , a 2010 American comedy drama series Gravity Star Trek Voyager Gravity Star Trek Voyager , an episode of Star Trek Voyager Gravity Entertainment , an American film and television production company Music Albums Gravity Alejandro Escovedo album Gravity Alejandro Escovedo album Gravity Anekdoten album Gravity Anekdoten album Gravity Bush Babees album Gravity Bush Babees album Gravity Fly to the Sky album Gravity Fly to the Sky album Gravity Fred Frith album Gravity Fred Frith album Gravity Jesse Cook album Gravity Jesse Cook album Gravity Kenny G album Gravity Kenny G album Gravity Out of the Grey album Gravity Out of the Grey album Gravity Our Lady Peace album Gravity Our Lady Peace album Gravity Westlife album Gravity Westlife album Gravity James Brown album Gravity James Brown album , an James Brown discography album by James Brown , or the title song Gravity , by D Side Songs Gravity Delirious? song Gravity Delirious? song Gravity Embrace song Gravity Embrace song Gravity John Mayer song Gravity John Mayer song Gravity Luna Sea song Gravity Luna Sea song Gravity Maaya Sakamoto song Gravity Maaya Sakamoto song Gravity Pixie Lott song Gravity Pixie Lott song Gravity , a song by Coldplay from X&Y Gravity , a song by The Dresden Dolls from The Dresden Dolls album The Dresden Dolls Gravity , a song by Max Webster from High Class in Borrowed Shoes Gravity , a song by Michael Sembello ... more details
Defying Gravity may refer to In film and television Defying Gravity TV series Defying Gravity TV series , a 2009 drama television series Defying Gravity 2008 film Defying Gravity 2008 film Defying Gravity 1997 film Defying Gravity 1997 film , a 1997 independent gay themed romantic drama In music Defying Gravity song Defying Gravity song , a song from the Broadway musical Wicked Defying Gravity Keith Urban album Defying Gravity Keith Urban album 2009 Defying Gravity Vinnie Moore album Defying Gravity Vinnie Moore album 2001 Defying Gravity The Sherbs album Defying Gravity The Sherbs album 1981 disambig fr Defying Gravity it Defying Gravity ... more details
Gravity models are used in various social sciences to predict and describe certain behaviors that mimic gravitational interaction as described in Isaac Newton s law of gravity . Generally, the social science models contain some elements of mass and distance, which lends them to the metaphor of physical gravity. Social science gravity models Gravity model of trade Trip distribution Gravity model Trip distribution Gravity model of migration Two step floating catchment area 2SFCA method disambig ja ... more details
Gravity Force is a computer game released in 1989 for the Amiga by Kingsoft. It is a 2D Thrust computer game Thrust clone, with single player missions and a 2 player multiplayer mode. It is primarily notable for inspiring the far more popular unofficial sequel Gravity Force 2 . In 1994, Jens Andersson and Jan Kronqvist released Gravity Force 2 in both freeware and registered versions. Innovative split screen and serial cable multiplayer modes gave it great replayability value the magazine Amiga Power declared it the second best game of all time, and commissioned Gravity Power , the slightly tweaked final version which was given away on the coverdisk of issue 50. All versions are now freeware. Although the planned sequel gf2k was never finished, many similarly titled clones appeared, such as http gf.codeplex.com Gravity Force XNA , http www.gravityjam.co.uk Gravity Jam , http sourceforge.net projects gp2 Gravity Power 2 , http www.gravity force.de Gravity Force , http www.gravity strike.de gs info.php Gravity Strike , http www.anastasei.co.uk Gravity.htm Gravity Fight , http www.efd.lth.se e96sn gwars.htm Gravity Wars , and http sourceforge.net projects gravastar Gravastar . These games are generally freeware, unfinished and refer to themselves as Gravity Force clones , rather than Thrust clones . See also Thrust computer game XPilot External links http gf.codeplex.com Gravity Force XNA http hol.abime.net 2789 Gravity Force entry at Hall of Light http www.lysator.liu.se jensa gf2 The Gravity Force 2 Homepage moby game id gravity force name Gravity Force moby game id gravity force 2 name Gravity Force 2 http www.ricklindeman.nl files gravitypower.html CD32 version http www.complexgravity.com us index.htm Complex Gravity, a remake of Gravity Force adding water using the Allegro library Category 1989 video games Category Amiga games Category Multidirectional shooters Category Multiplayer null modem games action videogame stub ... more details
Fighting Gravity may refer to Fighting Gravity band , a ska pop music group based out of Richmond, Virginia Fighting Gravity performance artists , a black light performance art troupe that was a finalist on America s Got Talent season 5 disambig ... more details
unreferenced date January 2011 Unreferenced stub auto yes date December 2009 In chemistry , gravity is the density of a fluid , particularly a fuel . It is expressed in degrees, with lower numbers indicating heavier liquids and higher numbers indicating lighter liquids. See specific gravity and API gravity . DEFAULTSORT Gravity Chemistry Category Physical quantities Chem stub ... more details
Notability date February 2010 Primary sources date February 2010 MicroPlanet Gravity is a full featured Microsoft Windows Windows Usenet online offline news client with an extensive feature list. Gravity was originally released in 1996. Numerous features were added over the years. Gravity originally started as shareware , and later as freeware . It is now open source under the BSD license . See also List of news clients External links http mpgravity.sourceforge.net SourceForge project page network software stub Category 1996 software Category Free Usenet clients fr MicroPlanet Gravity ... more details
Infobox Company name Gravity Interactive, Inc. logo Image Gravity interactive.png type Privately held company Private subsidiary of Gravity company GRAVITY Co., Ltd. genre foundation March, 2003 founder location city location country location Marina del Rey, California locations area served North America key people industry Video game s products services Video game Publishing revenue operating income net income assets equity owner num employees parent divisions subsid slogan homepage footnotes intl Founded in March 2003, Gravity Interactive LLC was created to host games for North America developed by GRAVITY Co., Ltd. . It is based in Marina del Rey near Los Angeles , California . Gravity was initially provided with several Server computing server s from Gravity Co. ref name equip http contracts.onecle.com gravitygravity interactive.sales.2003.shtml Sample Contracts Equipment Sales Agreement ref , and began Beta version beta testing of the International Ragnarok Online iRO service in 2003. ref name beta1 http www.gravity.co.kr en about eng company1.asp About Gravity Interactive Gravity KR Website ref Commercial service subsequently began on June 1, 2003. In 2005, Gravity also began hosting the North American version of ROSE Online naROSE . On January 1, 2006, Gravity Interactive LLC became Gravity Interactive, Inc. ref name rename http www.sec.gov Archives edgar data 1313310 000114554907001173 h01298e20vf.htm SEC 20 F Filing 2006 Annual Report ref In February 2008, Gravity began ... news.aspx?num 51 Requiem Closed Beta Information. ref Games Games which Gravity Interactive currently ... known as Dragonica L5 Games In 2007, Gravity founded a new game developer , L5 Games. Its employees consist of those formerly employed by Blizzard Entertainment . A subsidiary of Gravity Interactive, rather than GRAVITY Co., Ltd., L5 is meant primarily to develop games for the North American market ... title Gravity Announces New U.S. Game Development Studio sic hide y comprised of Former Blizzard ... more details
Infobox Album See Wikipedia WikiProject Albums Name Gravity Pulls Type Album Artist Echobelly Cover echobelly gravity pulls.jpg Released 2004 Recorded Genre Alternative rock Length Label Fry Up label Fry Up Producer Reviews Last album People Are Expensive br 2001 This album Gravity Pulls br 2004 Next album Gravity Pulls was the fifth album from England English alternative rock band Echobelly . Tracklisting Gravity Pulls To Get Me Thru the Good Times You Started a Fire in the Heart of a Wasted Life Djinn Big Sky Mind Strangely Drawn A Good Day What You Deserve One in a Million All Tomorrow Brings References Reflist Echobelly Category 2004 albums Category Echobelly albums ... more details
for the album by this group Gravity Kills album Infobox musical artist See Wikipedia WikiProject Musicians Name Gravity Kills Img Gravity Kills.jpg Img capt Gravity Kills, 1995 Img size Landscape Background group or band Alias Origin St. Louis, Missouri Genre Industrial rock Years active 1994 in music ... Notable instruments Gravity Kills is an American industrial rock band from Jefferson City, Missouri . The band was formed in 1994. They had their first hit single with Guilty Gravity Kills song Guilty from their album Gravity Kills album Gravity Kills . Appearances on the soundtracks for Mortal ... and broke up in 2003. On October 28, 2005, Gravity Kills reunited to perform for a self created ... and bar, featuring Gravity Kills and Fragile Porcelain Mice. Due to a scheduling conflict, Killoween was instead The Nightmare Before Thanksgiving on November 21, 2007. Gravity Kills confirmed rumors ... class wikitable Year Title Label rowspan 2 1996 Gravity Kills album Gravity Kills rowspan 4 TVT Records TVT Guilty Gravity Kills song Guilty 1997 Manipulated 1998 Perversion album Perversion ... Albums 1996 Gravity Kills Heatseekers No. 1 1996 Gravity Kills The Billboard 200 No. 89 1998 Perversion ... 4 Gravity Kills Enough align center align center align center Blame align center align center align ... References reflist External links http twitter.com GravityKillsSTL Official Gravity Kills on Twitter http www.facebook.com pages Gravity Kills Band 105568609473840 Official Gravity Kills at Facebook ... Official Gravity Kills at MySpace http www.gravitykills.com Official Site redirects to Gravity Kills on MySpace http www.grantb.net gk Perverted A Gravity Kills Compendium fan site http www.allmusic.com artist gravity kills p173904 Allmusic entry for Gravity Kills Category American industrial ... reestablished in 2009 Category American alternative rock groups de Gravity Kills fr Gravity Kills sv Gravity Kills ... more details
The American Petroleum Institute gravity, or API gravity , is a measure of how heavy or light a petroleum liquid is compared to water. If its API gravity is greater than 10, it is lighter and floats on water if less than 10, it is heavier and sinks. API gravity is thus an inverse measure of the relative ... on another and is therefore less dense, it has a greater API gravity. Although mathematically, API gravity has no units see the formula below , it is nevertheless referred to as being in degrees . API gravity is graduated in degrees on a Direct Measurement of API gravity Hydrometer method hydrometer instrument . The API scale was designed so that most values would fall between 10 and 70 API gravity ... scale see Degree Baum as the standard for measuring specific gravity of liquids less dense than ... by the American Petroleum Institute was to create the API Gravity scale, recognizing the scale that was actually being used. API gravity formulas The formula to obtain API gravity of petroleum liquids, from specific gravity SG , is math text API gravity frac 141.5 text SG 131.5 math Conversely, the specific gravity of petroleum liquids can be derived from the API gravity value as math text SG at 60 circ text F frac 141.5 text API gravity 131.5 math Thus, a heavy oil with a specific gravity of 1.0 i.e., with the same density as pure water at 60 F would have an API gravity of math frac 141.5 1.0 131.5 10.0 circ text API math Using API gravity to calculate barrels of crude oil per metric ... the approximate number of barrels per metric ton for a given crude oil based on its API gravity math text barrels of crude oil per metric ton 1 div bigg frac 141.5 text API gravity 131.5 times 0.159 ... barrels. Measurement of API gravity from its density To derive the API gravity from the density , the density ... in the Petroleum Measurement Tables , details of usage specified in ASTM D1250. The specific gravity is then calculated from the formula below and the API gravity calculated from the first formula ... more details
Infobox Album See Wikipedia WikiProject Albums Name Gravity Talks Type Album Artist Green on Red Cover Green on Red Gravity Talks.jpg Released 1983 Recorded July 1983 Genre Rock music Rock Length Label Slash Records Producer Chris D. Reviews Allmusic Rating 4 5 Allmusic class album id r8676 pure url yes link Last album This album Gravity Talks br 1983 Next album Gravity Talks is the second album by Green on Red . Track listing Gravity Talks Old Chief 5 Easy Pieces Deliverance Over My Head Snake Bit Alice Blue Parade That s What You re Here For Brave Generation Abigail s Ghost Cheap Wine Narcolepsy Personnel Dan Stuart vocals, guitar Chris Cacavas keyboards, guitar, lap steel, vocals Jack Waterson bg Alex McNicol drums, percussion Guests Matthew Piucci guitar Steve Wynn songwriter Steve Wynn guitar, vocals Category 1983 albums Category Slash Records albums 1980s rock album stub it Gravity Talks ... more details
Orphan date February 2009 The Social gravity as an application of Newtonian gravity to the system of commerce ref http findarticles.com p articles mi qa4074 is 200607 ai n17182620 Social Gravity and the Translatio Tradition in Early American Theories of Empire ref influence. For instance in The Administration of the Colonies 1764 , Thomas Pownall 1722 1805 had used the Newtonian concept of attraction to form the basis of his political and commercial theory of empire. Pownall s vision provided an important explanation of the mechanism by which colonial theorists understood the possibility of empire being transferred from one state to another. Pownall applied the Newtonian concept of gravity to his theory of empire, as evident in his suggestion that the laws of nature held the colonies to Great Britain in a manner analogous in all cases, by which the center of gravity in the solar system held the planets in their orbits. In making this analogy, Pownall s notion of social gravity drew upon earlier visions of social cohesion, particularly ideas of sociability in eighteenth century Britain. These ideas, in turn, were often predicated upon Stoic notions of cosmopolitanism , expressed by the key term oikeiosis, in order to stress the moral imperative for like minded humans to forge bonds dedicated to the common good. References references Category Commerce ... more details
Infobox Album See Wikipedia WikiProject Albums Name Gravity of Light Type Album Artist Tarot band Tarot Cover Gravity of Light.jpg Released 2010 Genre Heavy metal music Heavy metal Label King Foo Entertainment Length 49 42 ref http www.recordshopx.com artist tarot gravity of light ref Last album Crows Fly Black br 2006 This album Gravity of Light br 2010 Next album Gravity of Light is the eighth studio album by the Finland Finnish heavy metal music heavy metal musical group band , Tarot band Tarot . It was released in Finland on March 10, 2010 and is scheduled to be released in Europe on April 23, 2010 ref http www.wingsofdarkness.net php news.php?id 62 ref and in the US on June 8, 2010. ref http www.wingsofdarkness.net php news.php?id 63 ref Track Listing ref http www.recordshopx.com artist tarot gravity of light ref Satan is Dead 4 12 Hell Knows 6 05 Rise 4 30 Pilot of All Dreams 3 42 Magic and Technology 5 48 Calling Down the Rain 4 11 Caught in the Deadlights 4 41 I Walk Forever 4 49 Sleep in the Dark 4 41 Gone 7 03 End of Everything bonus track 03 48 Singles I Walk Forever digital only Reception Album ratings title subtitle state Aggregate scores MC Reviewers rev1 Lords of Metal ref http www.lordsofmetal.nl showreview.php?id 16023&lang en ref rev1Score 78 100 rev2 Fury Rocks ref http furyrocks.com en search Tarot Gravity Of Light 176162 ref rev2Score 8.4 10 rev3 rev3Score rev4 rev4Score rev5 rev5Score rev6 rev6Score rev7 rev7Score rev8 rev8Score rev9 rev9Score rev10 rev10Score rev11 rev11Score rev12 rev12Score Charts class wikitable sortable Chart 2010 Peak br position Finnish Albums Top 40 align center 2 Credits Marco Hietala vocals & backing vocals, bass, acoustic guitar Zachary Hietala guitars Janne Tolsa keyboards Pecu Cinnari drums Tommi Salmela samples, vocals & backing vocals References references Tarot band Category 2010 albums Category Tarot albums es Gravity of light fr Gravity of Light ja pt Gravity of Light ru Gravity of Light fi Gravity ... more details
Semiclassical gravity is the approximation to the theory of quantum gravity in which one treats matter field s as being quantum and the Gravitation gravitational field as being classical. In semiclassical gravity, matter is represented by quantum matter fields that propagate according to the theory of quantum field theory in curved spacetime quantum fields in curved spacetime . The spacetime in which the fields propagate is classical but dynamical. The curvature of the spacetime is given by the semiclassical Einstein equations , which relate the curvature of the spacetime, given by the Einstein tensor math G mu nu math , to the expectation value of the Stress energy tensor energy momentum tensor operator, math T mu nu math , of the matter fields math G mu nu frac 8 pi G c 4 left langle hat T mu nu right rangle psi math where G is Gravitational constant Newton s constant and math psi math ... into the cosmological constant , Newton s constant , and the f R gravity quadratic couplings ... is a linear combination of the other two terms and a surface term. See Gauss Bonnet gravity for more details. Since the theory of quantum gravity is not yet known, it is difficult to say what is the regime of validity of semiclassical gravity. However, one can formally show that semiclassical gravity could be deduced from quantum gravity by considering N copies of the quantum matter fields ... level, semiclassical gravity corresponds to summing all Feynman diagram s which do not have loops of gravitons but have an arbitrary number of matter loops . Semiclassical gravity can also be deduced from an axiomatic approach. There are cases where semiclassical gravity breaks down. For instance ... sourced at B with a 50 chance each. The most important applications of semiclassical gravity are to understand ... theme3.py?level 1&index1 43587 Semiclassical gravity on arxiv.org Kiefer, Claus http arxiv.org abs gr qc 9312015 The semiclassical approximation to quantum gravity theories of gravitation quantum gravity ... more details
Gravity gradiometry is the study and measurement of variations in the acceleration due to gravity . The gravity gradient is the spatial rate of change of gravitational acceleration. br Gravity gradiometry is used by oil, gas and mining companies to measure the density of the subsurface, effectively the rate of change of rock properties. From this information it is possible to build a picture of subsurface anomalies which can then be used to more accurately target oil, gas and mineral deposits. It is also used to image water column density, when locating submerged objects, or determining water depth bathymetry . Gravity gradiometry surveys are performed in a similar manner as geomagnetic surveys. The quantitity being measured is either the gradient of the gravitational acceleration in the vertical direction gdd , or the gravity gradient tensor the gradient of gravitational acceleration in all directions . Measuring systems are often mounted in aircraft to allow a longer time of acquisition and reduce the noise signal ratio. The bandwdith of these systems can be 500m and less. Consequently, Gdd lacks long wavelength. It is generally accepted By whom date September 2010 that Gdd does not contain wavelength greater than 1 2 the size of the survey, and this has consequences on the depth of investigation. Gravity gradient surveys are less useful in crustal scale studies, but are very important for mineral exploration. One type of gradiometer consists of two horizontally positioned gravimeter s that are rigidly connected. The two gravimeters experience the same accelerations, earth tides, and latitude effects, etc. The gradient is the difference in the two gravimeter readings divided by the baseline distance between them. More advanced gradiometers consist of four non coplanar gravimeter s, these systems measure the full gravity gradient tensor. See also Robert L. Forward Forward ... of 1 2 cm. DEFAULTSORT Gravity Gradiometry Category Geophysics Geophysics stub de Gradiometrie ... more details
Infobox Album See Wikipedia WikiProject Albums Name Detunized Gravity Type studio Artist De Phazz Released 1997 Genre Electronica Label Mole Listening Pearls Mole Last album This album Detunized Gravity br 1997 Next album Godsdog br 1999 Detunized Gravity is the first album of De Phazz , which was released in 1997. Track listing Roses 7 01 Between 2 Thieves 5 25 Homesick Inc. 4 02 Lovechild 4 48 Cut the Jazz 5 11 Little Company 5 44 Nameless Life 5 27 Good Boy 6 08 Lullaby 4 57 Hero Dead & Gone 3 57 No Jive 4 33 Detunized Gravity 3 44 Free Drift 6 18 Category De Phazz albums Category 1997 albums 1990s electronic album stub ... more details
Dablink For gravity in outer space, see Artificial gravity . Gravity boots are ankle supports designed to allow a person to hang upside down. Thanks to exposure in television dramas and movies in the 1980s, gravity boots became a common fitness tool in homes across the United States . Today, gravity boots are used by the U.S. Army and have experienced a surge in popularity in 2006 with Da Vinci Code author Dan Brown praising them as well. ref http news.bbc.co.uk 1 hi entertainment 4937754.stm Brown ... , Luke is shown working out by using gravity boots. ref http www.dispatch.com live content life stories ... and market gravity boots under various trade names. The purported benefits of gravity boots range ... gravity boots to add an extra challenge to workouts, doing inverted crunch exercise crunches or squat ... 2000 ref Manufacturers One manufacturer was Gravity Guidance, founded by Robert Martin, Jr. Their Gravity ... , osteopath and chiropractor Robert Martin, Sr. The Gravity Guidance System was an inversion therapy system that allowed patients to hang upside down with the help of gravity boots and a metal bar ... had lost confidence in the system and Gravity Guidance, Inc., defaulted. In 1984, Tim Elam, then a sales consultant for Gravity Guidance Systems, developed an inversion device that allowed for the user to get into the inverted position without the use of gravity boots. The Skyhook inverter marketing ... therapy. Gravity Boots are still manufactured by Teeter Hang Ups http teeter inversion.com teeter ... given about fad of hanging upside down Using gravity boots may aggravate eye diseases , by Rex ... 10, 1984. Klatz RM, Goldman RM, Pinchuk BG, Nelson KE, Tarr RS The effects of gravity inversion ..., Kappler RE, Slick G, Nelson K. More on gravity inversion West J Med 141 2 , p. 247 1984 . PMID 6238484 Friberg TR, Weinreb RN Ocular manifestations of gravity inversion JAMA 253 12 , pp. 1755 ... DEFAULTSORT Gravity Boots Category BDSM equipment Category Exercise equipment Category Physical therapy ... more details
Infobox company company name GRAVITY Co., Ltd. company logo Image Gravity.png 150px company slogan company ... dollar US 22,265,000 2006 subsid Gravity Interactive, Inc. homepage http www.gravity.co.kr Gravity Co., Ltd. Korean GRAVITY Co., Ltd. also known as Gravity Corporation nasdaq GRVY lang ko is a South ... interest with several subsidiary divisions. On 8 February 2005, Gravity Corporation made their Initial ... http moneycentral.hoovers.com global msn factsheet.xhtml?COID 137507 MSN Money IPO Center Gravity ..., while Gravity Corporation s flagship product Ragnarok Online is considered a success in Asia, operations ... becoming the new majority shareholder, on 13 September 2005, Il Young Ryu was named by Gravity as its ..., which gave up any interest in Gravity. On 19 October 2007, EZER sold their interest in Gravity ..., Gravity announced it had invested 9 Million in US game developer Perpetual Entertainment . Consequently, Gravity received a position on Perpetual s board of directors. Gravity also received priority ... 6 K Filing ref On 21 November 2007, Gravity announced they had lost their investment after Perpetual ... 21 11 2007 SEC 6 K Filing ref On 5 December 2007, Gravity announced they had formed a new US based game developer, L5 Games. L5 is a subsidiary of Gravity Interactive, Inc. and is based in San ... ref On 14 February 2008, GungHo Online Entertainment Inc. obtained 52.4 stake of Gravity. ref http www.reuters.com article marketsNews idINT32426220080214?rpc 44 Japan s GungHo to acquire S.Korea Gravity majority ref Diversion of Revenues Under Previous Management From 2002 through 2004, Gravity s chairman ..., Kim sold his shares of Gravity to EZER, Inc., a Japanese corporation. Kim paid the company back KRW 7.8 billion on 17 October 2005. After an investigation, Gravity and Kim reached a final settlement where Mr. Kim would additionally pay Gravity in part to reimburse the Company for certain of the costs ... and crimial litigation against one another. As a result of the investigation, Gravity was forced to restate ... more details
Induced gravity or Emergent gravity is an idea in quantum gravity that space time background emerges as a mean field approximation of underlying microscopic degrees of freedom, similar to the fluid mechanics approximation of Bose Einstein condensate s. The concept was originally proposed by Andrei Sakharov in 1967. Sakharov observed that many condensed matter systems give rise to emergent phenomena which are identical to general relativity . For example, Crystallographic defect crystal defects can look like curvature and torsion in an Einstein Cartan theory Einstein Cartan spacetime . This allows one to create a theory of Gravity with torsion from a World Crystal model of spacetime ref cite journal title Gravity as Theory of Defects in a Crystal with Only Second Gradient Elasticity author Hagen Kleinert H. Kleinert journal Annalen der Physik volume 44 page 117 year 1987 doi DOI 10.1002 andp.19874990206 url http onlinelibrary.wiley.com doi 10.1002 andp.19874990206 pdf ref in which the lattice spacing is of the order of a Planck length. Sakharov s idea was to start with an arbitrary background pseudo Riemannian manifold in modern treatments, possibly with torsion and introduce quantum fields matter on it but not introduce any gravitational dynamics explicitly. This gives rise to an effective action which to one loop order contains the Einstein Hilbert action with a cosmological constant ... Witten theorem . But, models with emergent gravity are always possible as long as other things, such as spacetime dimensions, emerge together with gravity. Developments in AdS CFT correspondence after 1997 suggest that the microphysical degrees of freedom in induced gravity might be radically ... that live in the boundary of the space time. See also Entropic gravity References Reflist External ..., Emergent Gravity from CFT , online lecture. http arxiv.org abs 0710.4153 C. J. Hogan Quantum ... abs gr qc 0204062v1 Matt Visser, Sakharov s induced gravity a modern perspective , 2002. http ... more details
Infobox Single Name Gravity Grave Artist The Verve from Album Verve EP Cover Gravity grave.jpg Released 5 October 1992 Format CD single CD , 12 inch single Studio Genre Shoegazing Length 8 21 extended version br 4 27 edit Label Hut Records Producer Barry Clempson Last single She s a Superstar br 1992 This single Gravity Grave br 1992 Next single Blue The Verve song Blue br 1993 Gravity Grave is a song by England English rock band The Verve and was released as the band s third single music single in the United Kingdom on 5 October 1992 see 1992 in British music . It reached number 78 on the UK Singles Chart. An extended version of the song was played at the 1993 Glastonbury Festival and lasted over nine minutes. That performance was released on the No Come Down A side and B side B sides Compilation album compilation in 1994. The full version of the song, which appeared on this single, was included as part of The Verve s 2004 Single music Singles Compilation album Compilation package This Is Music The Singles 92 98 . The edit version was only released as the lead track on the Verve EP . Part of their psychedelic era , this is another song with blurry visions of relationships and strong connections to drug taking, which the band, especially lead singer Richard Ashcroft , were more than apt to do. In fact, Ashcroft collapsed on stage at the 1994 Lollapalooza tour from taking too much ... and shot by Michael Spencer Jones. Track listing CD small HUTCD 21 small Gravity Grave Extended Version 8 21 Endless Life 5 32 A Man Called Sun Live at Clapham Grand 17 07 1992 5 29 Gravity Grave Live Encore at Clapham Grand 17 07 1992 2 35 10 small HUTEN 21 small Gravity Grave Edit Endless Life 5 32 She s a Superstar Live at Clapham Grand 17 07 1992 12 small HUTT 21 small Gravity Grave ... Category The Verve songs Category 1992 singles Category Virgin Records singles de No Come Down Gravity Grave beim Glastonbury 93 fr Gravity Grave uk Gravity Grave ... more details
Refimprove date December 2009 In fluid dynamics , a gravity current is a primarily horizontal flow in a gravity gravitational field that is driven by a density difference, hence gravity currents also sometimes ... approximation to be valid. Gravity currents are typically of very low aspect ratio ... . Thus gravity currents may be simulated by the shallow water equations , with special dispensation for the leading edge which behaves as a discontinuity. Structure A typical gravity current consists of a head and tail structure. The head, which is the leading edge of the gravity current, is a region ... which follows the head and which is best though of as the fluid which is left behind as the gravity current advances. Immediately in the wake of the head intense mixing occurs between the gravity current and the ambient fluid occurs. Mixing occurs from both above and below the gravity current. Mixing ... below is a result of the gravity current overrunning ambient fluid, literally trapping it underneath ... form on the surface of the head. According to one paradigm, the leading edge of a gravity current controls ... mixes with the tail of the gravity current, which means that the head of the current leaves behind it a layer ... 1 estimates of the exact value vary between about 0.7 and 1.4. Gravity currents can originate either ... is constantly replaced and the gravity current can therefore propagate, in theory, for ever ... thereby constitutes a theoretically constant release gravity current. Of course, the tide will at some stage reverse and the gravity current thereby dissipate. Most gravity currents will in fact ... phases. In the first phase the gravity current propagation is turbulent. The flow displays the billowing ... of Gravity Currents journal Journal of Fluid Mechanics volume 99 issue 04 pages 785 799 doi 10.1017 ... of a gravity current depends on the boundary conditions, and two cases are usually distinguished ... will for a sector. When a gravity encounters a solid boundary, it can either overcome the boundary ... more details
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