Distinguish Gravitational anomaly Technical date February 2010 Unreferenced date September 2010 A gravity anomaly is the difference between the observed acceleration of Earth s gravity and a value predicted from a model. Geodesy and geophysics In geodesy and geophysics , the usual theoretical model is the gravity on the surface of a reference ellipsoid such as WGS84 . To understand the nature of the gravity anomaly due to the subsurface, a number of corrections must be made to the measured gravity value The theoretical gravity smoothed normal gravity should be removed in order to leave only local effects. The elevation of the point where each gravity measurement was taken must be reduced to a reference datum to compare the whole profile. This is called the Free air Correction , and when combined with the removal of theoretical gravity leaves the free air anomaly . the normal gradient of gravity rate of change of gravity by change of elevation , as in free air, usually 0.3086 milligal s per ... density 2.67 g cm beneath the point this value is found by subtracting the gravity due to the Bouguer ... thumb right Bouguer gravity anomaly map of the state of New Jersey USGS For these reductions, different ... of the terrain . special methods like that of Henri Poincar Poincare Prey , using an interior gravity gradient of about 0.009 milligal per meter 90 nm s m . These methods are valid for the gravity ... in gravity maps as lows, because salt has a low density compared to the rocks the dome intrudes ... region see Gravity Anomalies of Britain and Ireland for example. Satellite measurements Large scale gravity anomalies can be detected from space. The Gravity Recovery and Climate Experiment ... Any region of space with higher than expected mass density will produce a gravity anomaly. Observations of gravity anomalies on galactic and intergalactic scales lead to the assumption of dark ... rock density beneath the mountains DEFAULTSORT Gravity Anomaly Category Geophysics Category Gravimetry ... 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
Primary sources date February 2009 Infobox company name The Gravity Group logo caption type traded as genre Only used with media and publishing companies fate predecessor successor foundation Start date 2002 7 founder Former Custom Coasters International employees defunct End date YYYY MM DD location city Cincinnati, Ohio location country USA location locations area served Worldwide key people industry Manufacturing products Roller coaster s, Train roller coaster roller coaster trains services revenue operating income net income aum Only used with financial services companies assets equity owner num employees parent divisions subsid homepage URL http www.thegravitygroup.com footnotes intl The Gravity Group , based in Cincinnati, Ohio , is an American based roller coaster design firm. The firm ... roller coaster manufacturer. The core group of designers and engineers at The Gravity Group have ... of The Gravity Group is called Hades roller coaster Hades and opened at Mount Olympus Theme Park in 2005. The Gravity also designed the currently 1 ranked The Voyage roller coaster The Voyage at Holiday ... alike. The Gravity Group designed the Ravine Flyer II at Waldameer in Erie Pennsylvania, which ... wooden roller coaster. The Gravity Group was also involved in the rebuilding of Libertyland s Zippin Pippin at Bay Beach Amusement Park in Green Bay, Wisconsin. In 2008, members of The Gravity Group ... by Gravitykraft Corporation, a sister company to The Gravity Group. The Gravity Group promotes ... at Gr na Lund in Sweden. The Gravity Group Coasters class wikitable Name Park Length ft Height ft ... External links http www.thegravitygroup.com The Gravity Group http www.rcdb.com ir.htm?contact 612 Listing of Gravity Group LLC installations at RCDB DEFAULTSORT Gravity Group, The Category Roller coaster manufacturers Category Companies established in 2002 Gravity Group Category Companies based in Cincinnati, Ohio fr The Gravity Group ... 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
unreferenced article date June 2009 File Slant wagon.jpg thumb Slant wagon The Gravity wagon , or Slant wagon , is an angled hopper style wagon that utilizes gravity to make the unloading process easier. It is primarily used for on farms for agricultural purposes, such as for holding crops or fertilizer . For easy comparison, it is similar to a railroad hopper car , only with one door which is located on the bottom side rather than on the bottom center. Description A gravity wagon has three sides which are angled at about 45 degree angle degree s and one side that is vertical. An unloading door is located at the bottom of the vertical side where the three angled sides come together. This design causes the contents of the wagon to funnel towards the door so that no effort has to be put forth to unload the contents other than opening the door, which opens upwards by the action of a lever or turning of a wheel. The chassis used for gravity wagons is sometimes the same as the chassis used for hay wagons. Category Agricultural machinery agri stub ... more details
Multiple issues cleanup June 2010 weasel June 2010 POV June 2010 fansite June 2010 Gravity Euphonic is an electronic music electronic industrial rock band from the Fort Worth, TX area. The band plays a significant role in the underground industrial scene by breaking away from the typical sounds of electronic body music EBM and Industrial metal . The band maintains a large fanbase in the Southwest United States as well as in several markets throughout the East Coast. History Gravity Euphonic is Eric Hunter II, Jamie French and Orion Quest. The project started in 1995 under a different name and in 2006, evolved into the industrial rock industrial metal driven sound that can be heard today. The band s sound is defined by heavy orchestration , distorted synthesizers , electronic drums and hard rock guitars. Gravity Euphonic has taken a do it yourself approach to production, promotion and touring utilizing the resources of the internet and their home studios. In 2009 however, Gravity Euphonic joined forces with underground record label, Radio Active Music . Over the past ten years, Eric has successfully released six full length albums on his own as well as having done work for several other ... and works as an adult entertainment performer and producer. In 2012, Gravity Euphonic has left .... In late 2008, the band started work on the Gravity Euphonic Future News From the Future News ... claims that they are actually from the year one hundred thousand million . In 2010, Gravity Euphonic released their first music video for the single, Livid All Along from the self titled Gravity Euphonic album. The video was filmed and produced completely by the band. Gravity Euphonic regularly tours ... Discography Full length albums and EPs Gravity Euphonic 9 22 2009 Sunlight Kills 2007 Secret 2006 ... Electronic music External links http www.gravityeuphonic.net Gravity Euphonic official website http www.myspace.com gravityeuphonic Myspace Artists Gravity Euphonic official MySpace page Category Industrial ... more details
nofootnotes date October 2010 In astrodynamics and rocket rocketry , gravity drag or gravity losses is a measure of the loss in the net performance of a rocket while it is thrusting in a gravitational field . In other words, it is the cost of having to hold the rocket up in a gravity field. It is the difference between on one hand the delta v expended and on the other hand the theoretical delta v for the actual ... by a thrust ing spacecraft . Gravity losses depend on the time over which thrust is applied as well the direction the thrust is applied in. Gravity losses as a proportion of delta v ... must be applied over a long period with a major component of thrust in the opposite direction to gravity, so gravity losses become significant. For example, to reach a speed of 7.8 km s in low Earth ... v is due to gravity losses and atmospheric drag . fact date September 2011 Example Consider the simplified ... is a g t , whereas the delta v expended is at . The gravity drag is the difference between these figures, which is gt . As a proportion of delta v, the gravity drag is g a . A very large thrust over a very short time will achieve a desired speed increase with little gravity drag. On the other hand, if a is only slightly greater than g , the gravity drag is a large proportion of delta v. Gravity ... of being decelerated by gravity this means as soon as possible. It is wasteful to lift fuel ... orbit LEO or from LEO to an escape orbit . This is a worst case calculation in practice, gravity ... at an angle from vertical can reduce the effects of gravity drag. Thrust is a vector quantity, and the direction of the thrust has a large impact on the size of gravity losses. For instance, gravity ..., completely canceled by gravity, and a horizontal component of 2.8 mg , achieving a 2.8 g horizontal ... to note that minimising gravity losses is not the only objective of a launching spacecraft ..., to minimize gravity losses. See also Atmospheric drag Delta v budget Oberth effect References Citation ... more details
Dablink For gravity in outer space, see Artificial gravity . ref improve date September 2011 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 ... manufacture and market gravity boots under various trade names. The purported benefits of gravity ... people use gravity boots to add an extra challenge to workouts, doing inverted crunch exercise crunches ... magazine Women s Health November 2000 ref Manufacturers One manufacturer was Gravity Guidance, founded by Robert Martin, Jr. Their Gravity Guidance System , which was developed by the founder s father, United States American physician , osteopath and chiropractor Robert Martin, Sr. The Gravity Guidance ... of gravity boots and a metal bar wedged within a doorframe. The system gained widespread fame after ... 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 still are manufactured by Teeter Hang Ups http teeter inversion.com teeter ... upside down Using gravity boots may aggravate eye diseases , by Rex Dalton, Copley News Service ..., Goldman RM, Pinchuk BG, Nelson KE, Tarr RS The effects of gravity inversion procedures on systemic ... 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 1757 1985 . PMID 3974054 http www.teeter inversion.com inversion history.asp History of Inversion DEFAULTSORT Gravity Boots ... more details
Infobox video game title Gravity Bone image File Gravity Bone start logo.jpg 220px developer Blendo Games publisher Blendo Games distributor designer engine id Tech 2 modified ref http db.tigsource.com games gravity bone Gravity Bone . The Indie Games database. Retrieved March 7, 2012. ref released January 1, 2009 genre Action game Action modes Single player ratings platforms Microsoft Windows media Digital distribution Digital download requirements input Keyboard computing Keyboard & Mouse computing Mouse , Gamepad Gravity Bone is an First person game first person action game released by Independent video game development independent videogame developer Blendo Games for the personal computer on 2009. ref name ign1 Onyett, Charles January 28, 2009 . http pc.ign.com articles 949 949087p1.html Gravity Bone Impressions . IGN . Retrieved March 7, 2012. ref As of 2012, the game can be played for free on the official Blendo Games website. ref http www.blendogames.com Blendo Games . Retrieved March 7, 2012. ref A sequel, named Thirty Flights of Loving , is planned for release in 2012. ref name sequel1 Meer, Alec February 28, 2012 . http www.rockpapershotgun.com 2012 02 28 gravity bones sequel thirty flights of loving Gravity Bone s Sequel Thirty Flights Of Loving . Rock Paper Shotgun. Retrieved March 7, 2012. ref Gameplay Gravity Bone as a standard first person shooter in which the main ... www.tigsource.com 2009 01 02 gravity bone Gravity Bone . TGI Source. Retrieved on March 7, 2012. ref ... of peculiar strength. ref name ign1 Another website said that It would be easy to say Gravity ... ride. ref name gamedrink http www.gamedrinkcode.com blog 2009 01 13 the genius of gravity bone The genius of Gravity Bone . Game Drink Code. Retrieved on March 7, 2012. ref Sequel A sequel to Gravity ... February 28, 2012 . http kotaku.com 5889082 indie darling gravity bone gets a sequel Indie Darling Gravity Bone Gets a Sequel ref Thirty Flights of Loving will feature a soundtrack by one of Idle ... more details
for real Gravity trains Gravity railroad Image Gravity elevator.gif thumb right 200px Elevator passenger rides the theoretical gravity train. He free fall s through a section of the planet to arrive at a destination on the other side. A gravity train is a theoretical means of transport ation intended to go between two points on the surface of a sphere , following a straight tunnel that goes directly from one point to the other through the interior of the sphere. In a large body such as a planet , this train could be left to acceleration accelerate using just the force of gravity , since, during the first half of the trip from the point of departure until the middle , the downwards pull towards the center of gravity would pull it towards the destination. During the second half of the trip, the acceleration ... reasons gravity trains do not exist. First, the transit shown in the illustration would pierce the Earth ... an atmosphere. A gravity train can be seen as an extreme version of a roller coaster , with only a downward ... accelerating inside a planet in a letter to Isaac Newton . A gravity train project was seriously presented ... suggesting that gravity trains be considered for a future transportation project. ref cite ... Minutes ref Mathematical considerations The gravity train has several curious properties. All straight line gravity trains on a given planet take exactly the same amount of time to complete a journey ... www.docstoc.com docs 566538 Gravity Train Project Robin Davis A Physicist s Pipe Dream ref The time ... Gravity train and http www.math.purdue.edu eremenko dvi gravsol.pdf mathematical solution Alexandre ... people seremina edu gravity train rom.html Romanian and http www.pkwteile.de wissen projekt pociag gravity Polish . http www.bbc.co.uk dna h2g2 A2960633 The Amazing 42 Minute Gravity Sled , at the Hitch ... The Gravity Express http www.time.com time magazine article 0,9171,842469,00.html To Everywhere in 42 ... Weehawken Burrito Tunnel is a gravity train. DEFAULTSORT Gravity Train Category Mechanics Category ... 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 10.1002 andp.19874990206 bibcode 1987AnP...499..117K 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 . In other words, general relativity ... 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 different. The bulk space time arises ... time. See also Entropic gravity References Reflist External links http relativity.livingreviews.org ... online.itp.ucsb.edu online strings05 berenstein D. Berenstein, Emergent Gravity from CFT , online ... s induced gravity a modern perspective , 2002. http www.physik.fu berlin.de kleinert b11 psfiles ... more details
Multiple issues advert December 2011 cleanup July 2008 orphan February 2009 notability April 2010 no footnotes September 2008 File Gravity Logo.jpg thumb copyright Gravity Payments Gravity Payments is the largest payment processor in Washington U.S. state Washington . Founded in February 2004, Gravity Payments is wholly owned by two brothers, Dan Price and Lucas Price. Gravity Payments provides merchant processing services to clients nationally with the most concentrated client bases in Washington state Washington , Oregon , and Hawaii . It is headquartered in Seattle, Washington . History Gravity Payments was founded in 2004 by brothers Dan Price and Lucas Price. Gravity payments grew rapidly from its small start up roots to a 50 employee company that is currently the largest payment processor in Washington State with clients located all over the United States. File Dan Price.jpg thumb Dan Price, co founder and CEO of Gravity Payments In June 2008, Dan Price was honored by President Barack Obama ref cite news last Cook first John title President Barack Obama honors 26 year old Seattle entrepreneur url http www.techflash.com seattle 2010 06 president obama honors 26 year old seattle entrepreneur.html newspaper Puget Sound Business Journal date June 8, 2008 ref for his entrepreneurship and the sustained success of Gravity Payments. Services Gravity Payments provides full spectrum payment processing solutions including Credit and Debit Card Processing, Electronic Check Payment Processing, Gift and Loyalty Programs, and E Commerce Solutions. Awards 2008 Homestreet Bank Small Business Spotlight Award Citation needed date August 2011 2008 Puget Sound Business Journal 40 Under 40 Citation needed date August 2011 References reflist External links http www.gravitypayments.com press release inc magazine inc 500 Gravity Payments Press Release http seattletimes.nwsource.com html businesstechnology 2008062989 btinterface21.html Seattle Times Article http www.seattlepi.com busin ... 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 by Hut Recordings . 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 ecstasy. The man pictured on the cover is Tobyn Burnett. The cover was designed by Brian Cannon of Microdot 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 ... Gravity Grave Extended Version 8 21 Endless Life 5 32 A Man Called Sun Live at Clapham Grand 17 ... No Come Down Gravity Grave beim Glastonbury 93 fr Gravity Grave uk Gravity Grave ... more details
Gravity Probe A GP A was a space based experiment to test the theory of general relativity , performed jointly by the Smithsonian Astrophysical Observatory and the National Aeronautics and Space Administration . It sent a hydrogen maser , a highly accurate frequency standard, into space to measure the rate change of a clock in lower gravity with high precision. The probe was launched on June 18, 1976 on top of a Scout rocket Scout rocket and remained in space for 1 hour and 55 minutes, as intended. It then crashed into the Atlantic Ocean. Experimental setup The 100 kg Gravity Probe A spacecraft housed the hydrogen maser system that ran throughout the mission, and a microwave repeater to measure the Doppler shift of the maser signal. The satellite was launched nearly vertically upward to cause a large change in the local gravity seen by the maser, reaching a height of convert 10,000 km mi abbr on . At this height, general relativity predicted a clock should run 4.5 parts in 10 sup 10 sup faster than one on the Earth. Results Expand section date January 2007 The clock rate was measured from the ground by comparing the microwave signal from the clock to a maser on the ground and subtracting a signal from the spacecraft that measured the Doppler shift. The clock rate was measured for most of the duration of the flight and compared to theoretical predictions. The stability of the maser permitted measurement of changes in the rate of the maser of 1 part in 10 sup 14 sup for a 100 sec measurement. The experiment was thus able to test the equivalence principle . Gravity Probe A confirmed the prediction that gravity slows the flow of time, and the observed effects matched the predicted effects to an accuracy of about 70 parts per million. See also Timeline of gravitational physics and relativity Timeline of gravitational physics Gravity Probe B References cite journal author R.F.C. Vessot et al. year 1980 title Test of Relativistic Gravitation with a Space Borne Hydrogen ... more details
Unreferenced stub auto yes date December 2009 Gravity darkening , also referred to as Gravity Brightening, is an astronomical phenomenon where a star rotates so rapidly that it has a detectably oblate spheroid shape, such as in Regulus in the Leo constellation Leo constellation . When a star is oblate, it has a larger radius at its equator than it does at its poles. As a result, the poles have a higher surface gravity, and thus temperature and brightness. Thus, the poles are gravity brightened, and the equator gravity darkened. The star becomes oblate and hence gravity darkening occurs because the centrifugal force resulting from rotation creates additional outward pressure on the star. The centrifugal force is expressed mathematically as big math F text centrifugal m Omega 2 rho math big where big math m math big is mass in this case of a small volume element of the star , big math Omega math big is the angular velocity , and big math rho math big is the radial distance from the axis of rotation. In the case of a star, the value of big math rho math big is largest at the equator and smallest at the poles. This means that equatorial regions of a star will have a greater centrifugal force when compared to the pole. The centrifugal force pushes mass away from the axis of rotation, and results in less overall pressure on the gas in the equatorial regions of the star. This will cause the gas in this region to become less dense, and cooler. See also Von Zeipel theorem DEFAULTSORT Gravity Darkening Category Stellar phenomena Star stub es Oscurecimiento gravitatorio it Oscuramento gravitazionale ru zh ... more details
Infobox album See Wikipedia WikiProject Albums Name Grace in Gravity Type studio Longtype Artist The Story band The Story Cover Editing Grace in Gravity cover.jpg Caption Released 1991 Recorded Genre folk rock Length Language Label Green Linnet Records Green Linnet , Elektra Records Elektra Director Producer Alain Mallet, Ben Wittman Reviews Compiler Chronology Last album This album Grace in Gravity br 1991 Next album The Angel in the House album The Angel in the House br 1993 Misc Extra album cover Upper caption Type Album Cover Grace in Gravity cover.jpg Lower caption Elektra re release cover Grace in Gravity 1991 is the debut album from the folk rock duo The Story band The Story . The album was first released by Green Linnet Records and in 1992 it was re released by Elektra Records with the same track listing. Track listing All songs written by Jonatha Brooke except where mentioned. Grace in Gravity 4 40 The Perfect Crime 3 14 Always 6 40 Damn Everything But the Circus 4 31 The Alarm Is on Love 4 21 Easier Than Sorry 3 53 Just One Word 4 06 And Our Faces, My Heart, Brief as Photos 3 56 Dog Dreams 4 04 Over Oceans 5 15 Love Is More Thicker Than Forget small Jonatha Brooke E.E. Cummings small 2 30 Album credits Duke Levine guitarist. br Mike Rivard bassist. br Alain Mallet keyboardist producer. br Ben Wittman drummer producer. DEFAULTSORT Grace In Gravity Category 1991 debut albums Category The Story albums ... more details
for strong gravity near stars Gravitation Strong gravity is a non mainstream theoretical approach to Color confinement particle confinement having both a cosmological scale and a particle scale gravity. In the 1960s, it was taken up as an alternative to the then young QCD theory by several theorists, including Abdus Salam , who showed that the particle level gravity approach can produce confinement and asymptotic freedom while not requiring a force behavior differing from an inverse square law , as does QCD. ref cite journal last Salam first Abdus coauthors Sivaram, C. title Strong Gravity Approach to QCD and Confinement journal Mod. Phys. Lett. year 1993 volume A8 4 pages 321 326 ref Sivaram published a review of this bimetric theory approach. ref cite journal last Sivaram first C. coauthors Sinha, K. title Strong gravity, black holes, and hadrons journal Physical Review D volume 16 issue 6 pages 1975 1978 doi 10.1103 PhysRevD.16.1975 bibcode 1977PhRvD..16.1975S ref Although this approach has not so far led to a recognizably successful unified field theory unification of strong and other forces, the modern approach of string theory is characterized by a close association between Gauge theory gauge force s and spacetime geometry. In some cases, string theory recognizes important duality between gravity like and QCD like theories, most notably the AdS QCD correspondence. References reflist See also Gravitational coupling constant Category Gravitation Category Particle physics physics stub ... 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 ... on the Sea isbn ref The spread of a gravity current depends on the boundary conditions, and two cases ..., in all other cases the current will for a sector. When a gravity encounters a solid boundary ... more details
nowiki nowiki A gravity knife is a knife with a blade contained in its handle, and which opens its blade by the force of inertia or gravity . ref name RL cite book last Langston first Richard title Collector ... Press year 2001 location Boulder, Colorado isbn 1 58160 283 9 page 224 ref As the gravity knife requires gravity or centripetal force to propel the blade out of the handle, it differs fundamentally from ... or similar. The gravity knife uses a button, trigger, or fulcrum lever to release the blade from both ... blade. While most military gravity knives utilize a locking blade design, other types may not mechanically ... Knives publisher Howell Press Inc. year 1999 isbn 1 57427 092 3 page 256 ref Factory made gravity ... Image Knife gravity x01.jpg thumb 200px right German Luftwaffe Fallschirmj ger Messer or Air Force Paratrooper Knife One of the most recognizable gravity knives is the World War II Luftwaffe Fallschirmj ger ... 100mm telescoping OTF , gravity propelled locking blade. First produced in 1937, the FJM was issued ... edge. To open the blade using gravity , the user points the FJM downwards while flipping up the fulcrum style operating lever, allowing gravity to draw out the blade to its fullest extent. Releasing .... ref name PA Pattarozzi, Mack A. 2006 , Luftwaffe Gravity Knife A History And Analysis of the Flyer ... for the West German Army, in three major types. The first is the Type III trap door gravity .... Ibberson Gravity Knife After British forces had captured numbers of the Luftwaffe Fallschirmj ger ... manufacturer, and asked him to produce a British version of the German Luftwaffe gravity ... , London Blandford, ISBN 0 7137 1822 6, 9780713718225 1988 , p. 29 These British SOE gravity ... & Co. initially made 500 gravity knives for issue to the Special Operations Executive SOE and other ... knives during the war. ref name LAD These Sheffield gravity knives had smooth wood or textured ... Messer , with a locking gravity deployed blade, takedown feature, and a folding rigging spike or awl ... more details
The surface gravity , g , of an astronomical object astronomical or other object is the gravitational acceleration experienced at its surface. The surface gravity may be thought of as the acceleration due to gravity experienced by a hypothetical test particle which is very close to the object s surface and which, in order not to disturb the system, has negligible mass. Surface gravity is measured in units ... second squared . It may also be expressed as a multiple of the Earth s standard gravity standard surface gravity , g 9.80665 m s sup 2 sup . ref p. 29, http physics.nist.gov Document .... ref In astrophysics , the surface gravity may be expressed as log g , which is obtained by first expressing the gravity in cgs unit s, where the unit of acceleration is centimeter s per second squared ... to G stars publisher Keele University accessdate 2007 05 31 ref Therefore, as gravity affects all ... 100 cm s sup 2 sup , the surface gravity of Earth could be expressed in cgs units as 980.665 cm s sup 2 sup and at base 10 logarithm log g as 2.992 cm s sup 2 sup . The surface gravity ... it a surface gravity of up to 7 e 12 m s with typical values of a few e 12 m s that is more than 10 sup 11 sup times of that of Earth . One measure of such immense gravity is the fact that neutron stars ... of light . Mass, radius and surface gravity In the Newtonian gravity Newtonian theory of gravity ... produces twice as much force. Newtonian gravity also follows an inverse square law, so that moving ... it easier to calculate their surface gravity. The gravitational force outside a spherically symmetric ... enough away from the body AFAIK, NOT on the surface date June 2011 Therefore, the surface gravity ... radius , and the surface gravity of a planet or star with a given average density will be approximately ... at least 5 times the mass of Earth, but is unlikely to have 5 times its surface gravity. If its mass .... O Connell, arXiv astro ph 0704.3454. ref Gravity on such a planet s surface would be approximately ... more details
expansion . A gravity well or gravitational well is a conceptual model of the gravitational field surrounding a body in space. The more massive the body the deeper and more extensive the gravity well associated with it. The Sun has a far reaching and deep gravity well. Asteroids and small moons have much shallower gravity wells. Anything on the surface of a planet or moon is considered to be at the bottom of the gravity well. Entering space from the surface of a planet or moon means climbing out of the gravity well. The deeper a planet or moon s gravity well is, the more energy it takes to achieve escape velocity . In astrophysics , a gravity well is specifically the gravitational potential ... wells. Physical models of gravity wells are sometimes used to illustrate orbital mechanics . Gravity wells are frequently confused with general relativity general relativistic Introduction to general ... is the origin of the name gravity well. A black hole would not have this closing dip. Physical gravity ... will have roughly the same equation of motion as an object moving in the potential field itself. Gravity ... be reduced by making the gravity well shallower i.e. by choosing a smaller scaling factor for the ... shaped gravity well, and as in the rigid case a second test object placed near the first will gravitate toward it in an approximation of the correct force law. Gravity wells and general relativity ... s curvature of space. Although similar, this does not depict the Sun s gravity well. Both the rigid gravity well and the rubber sheet model are frequently misidentified as models of general relativity ... 3 dimensional space superficially resembles a gravity well. Embedding diagrams are, however, fundamentally different from gravity wells in a number of ways. Most importantly, an embedding is merely a shape, while a potential plot has a distinguished downward direction thus turning a gravity well upside ... rolling in a gravity well, but for entirely different reasons. There is no analogue of the Schwarzschild ... more details
use of specific gravity, see relative density . See Intensive and extensive properties intensive property for the property implied by specific . Specific gravity is the ratio of the density mass of a unit .... Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal ... gravity as specified above is multiplied by 1000. ref Hough, J.S., Briggs, D.E., Stevens, R and Young ..., p. 881 ref Specific gravity is commonly used in industry as a simple means of obtaining information ... syrups, juices, honeys, brewers wort , must etc. and acids. Details Specific gravity, as it is the ratio of densities, is a dimensionless quantity . Specific gravity varies with temperature reference .... Substances with a specific gravity of 1 are neutrally buoyant in water, those with SG greater ... of the substance under study. It is in industry where specific gravity finds wide application, often for historical reasons. True specific gravity, can be expressed mathematically as math SG true ... rho mathrm H 2 mathrm O math is the density of water. The apparent specific gravity is simply ... of water, both measured in air. It can be shown that true specific gravity can be computed ... m H 2O frac g g frac W V sample W V H 2O math where math g math is the local acceleration due to gravity ... weather patterns but as specific gravity usually refers to highly incompressible aqueous solutions ... are usually neglected at least where apparent specific gravity is being measured. For true in vacuo specific gravity calculations air pressure must be considered see below . Temperatures are specified ... 20 C 4 C value for water of 0.9982343. As the principal use of specific gravity measurements in industry ... form of specific gravity. For example, in the brewing industry, the Plato scale Plato table ... it is derived from the original Plato table is for apparent specific gravity measurements at 20 C 20 ... gravity of a substance, its actual density can be calculated by rearranging the above formula ... more details
Verlinde s statistical description of gravity as an entropic force leads to the correct Newton s law ... gravity is a hypothesis in modern physics that describes gravity as an entropic force not a fundamental .... Origin The probabilistic description of gravity has a history that goes back at least to research on black .... These studies suggest a deep connection between gravity and thermodynamics, which describes the behavior ... 1995PhRvL..75.1260J ref Subsequently, other physicists began to explore links between gravity and entropy . ref cite journal last Padmanabhan first Thanu title Thermodynamical Aspects of Gravity New ... ph ref Erik Verlinde s theory In 2009, Erik Verlinde disclosed a conceptual theory that describes gravity ... On January 6, 2010 he published a preprint of a 29 page paper titled On the Origin of Gravity and the Laws ... of Gravity and the Laws of Newton eprint 1001.0785 date 6 January 2010 class hep th ref The paper ... Verlinde doi 10.1007 JHEP04 2011 029 journal JHEP 04, 29 2011 title On the Origin of Gravity and the Laws of Newton bibcode 2011JHEP...04..029V ref Reversing the logic of over 300 years, it argued that gravity ... combines the thermodynamic approach to gravity with Gerardus t Hooft s holographic principle . His theory implies that gravity is not a fundamental interaction , but an emergent phenomenon which .... ref name nytimes cite news last Overbye first Dennis title A Scientist Takes On Gravity url ... for gravity , New Scientist , 20 January 2010, issue 2744 ref ref http www.wired.com beyond the beyond 2010 01 gravity is an entropic form of holographic information Gravity is an entropic form ... hep th year 2010 ref and loop quantum gravity . ref cite arxiv eprint 1001.3668 author1 Lee Smolin title Newtonian gravity in loop quantum gravity class gr qc year 2010 ref Also, a specific microscopic model has been proposed that indeed leads to entropic gravity emerging at large scales. ref cite arxiv eprint 1001.3808 author1 Jarmo M kel title Notes Concerning On the Origin of Gravity and the Laws ... more details
Infobox VG title cite web title Gravity Wars url http gravitywars.yboris.com image Image GravityWarsPC.jpg 252px developer Ed Bartz 1986 br Boris Yakubchik 2008 released June vgy 2008 genre Strategy game , Artillery game platforms Microsoft Windows Windows Gravity Wars is a video game for the Amiga personal computer system by Ed Bartz. dubious date March 2012 ref http www.angelfire.com games3 bigcharts amistrat.html Strategy Amiga , list of Amiga games ref It was developed in 1986 or 1987. dubious date March 2012 It is a turn based artillery game , which is a subgenre of strategy game . The game consists of two spaceships firing projectiles at each other using an angle and velocity. Randomly scattered planets attracting the projectiles make shots tricky. With its simplicity and aesthetic beauty it inspired re makes with the same name. A 1992 edition was written for the Apple Macintosh Macintosh by Rhys Hollow to work as a rulebook on GameMaster gaming platform. There are MS DOS , Microsoft Windows and Linux ports available on the Internet. See also Space Tanks , PC game with tanks on tiny planets References reflist External links http gravitywars.yboris.com Gravity Wars 2008 version of the game http www.arcadepod.com java play.php?id dstarbattle Death star battles A java applet version. http mg.pov.lt pyspacewar PySpaceWar a Python programming language Python PyGame version of the game along with action mode http www.physics.rutgers.edu doroshen downloads gwars.html Gravity Wars DOS version of the game http pascal.sources.ru games gravwar2.htm Gravity Wars Pascal version of the game http www.tucows.com preview 9366 Gravity Wars an unknown version Slingshot video game Slingshot Linux version Category Artillery video games Category Strategy video games artillery videogame stub ... more details
coord 47.494013 N 19.122559 E display title Infobox company name Gravity Rock Solid Recommendations logo Image Gravity technologies logo.png 150px Gravity Technologies logo caption slogan Rock solid recommendations. type Privately held company Private genre fate predecessor Gravity R&D, Reignsoft successor ... http www.uzletiangyal.net content file Gravity 20Technologies.pdf ref services Software development ... ref1 cite web url http gravityrd.com gravity news.php?id 42&gravitygravity among europe E2 80 99s top 25 most innovative start ups completes first financing round&newsgroupid 2&lang en title Gravity ... http gravityrd.com GravityRD.com footnotes intl yes Gravity Rock Solid Recommendations formerly Gravity R&D is an Information technology IT provider specialized in recommender system s. Gravity was founded by members of the Netflix Prize team Gravity . Gravity is based in Budapest , Hungary .... The team Gravity was the front runner during January May 2007. ref cite news title Netflix Prize ... When Gravity and Dinosaurs Unite . In January 2009, the two teams founded Grand Prize Team to initiate ... egymilli doll r rt ref Details on the algorithms developed by the Gravity team can be found in their scientific ... coauthors Istv n Pil szy, Botty n N meth, Domonkos Tikk contribution On the Gravity Recommendation ... date year 2007 id contribution url http www.cs.uic.edu liub KDD cup 2007 proceedings gravity Tikk.pdf ... Reignsoft Ungarn author Achim Brueck date 2008 07 03 ref ref cite web url http gravityrd.com gravity news.php?id 22&gravity deutsche telekom interactive tv award&newsgroupid 2&lang en title Deutsche ... ref ref cite web url http blog.strands.com 2008 10 24 gravity winner strands 100k call title Strands Blog Instant personalized TV entertainment developer, Gravity R&D, winner of the Strands 100k Call ... publisher E unlimited.com date 1999 12 04 accessdate 2010 05 02 ref Investors Gravity raised in the first ... Capital ref Since the first round investment, Gravity won customers in USA, UK, Russia, Italy ... more details
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