What is "gravity"

Gravity \Grav"i*ty\, n.; pl. Gravities. [L. gravitas, fr. gravis heavy; cf. F. gravit['e]. See Grave, a., Grief.]

1. The state of having weight; beaviness; as, the gravity of lead.

2. Sobriety of character or demeanor. ``Men of gravity and learning.''
   --Shak.

3. Importance, significance, dignity, etc; hence, seriousness; enormity; as, the gravity of an offense.

   They derive an importance from . . . the gravity of the place where they were uttered.
   --Burke.

4. (Physics) The tendency of a mass of matter toward a center of attraction; esp., the tendency of a body toward the center of the earth; terrestrial gravitation.

5. (Mus.) Lowness of tone; -- opposed to acuteness.

   Center of gravity See under Center.

   Gravity battery, See Battery, n., 4.

   Specific gravity, the ratio of the weight of a body to the weight of an equal volume of some other body taken as the standard or unit. This standard is usually water for solids and liquids, and air for gases. Thus, 19, the specific gravity of gold, expresses the fact that, bulk for bulk, gold is nineteen times as heavy as water.

c.1500, "weight, dignity, seriousness," from Middle French gravité "seriousness, thoughtfulness," and directly from Latin gravitatem (nominative gravitas) "weight, heaviness, pressure," from gravis "heavy" (see grave (adj.)). The scientific sense of "force that gives weight to objects" first recorded 1640s.

n. Resultant force on Earth's surface, of the attraction by the Earth's masses, and the centrifugal pseudo-force caused by the Earth's rotation.

1. n. (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; "the more remote the body the less the gravity"; "the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them"; "gravitation cannot be held responsible for people falling in love"--Albert Einstein [syn: gravitation, gravitational attraction, gravitational force]

2. a manner that is serious and solemn [syn: graveness, sobriety, soberness, somberness]

3. a solemn and dignified feeling [syn: solemnity] [ant: levity]

Gravity or gravitation is a natural phenomenon by which all things with energy are brought toward (or gravitate toward) one another, including stars, planets, galaxies and even light and sub-atomic particles. Gravity is responsible for many of the structures in the Universe, by creating spheres of hydrogen — where hydrogen fuses under pressure to form stars — and grouping them into galaxies. On Earth, gravity gives weight to physical objects and causes the tides. Gravity has an infinite range, although its effects become increasingly weaker on farther objects.

Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915) which describes gravity not as a force but as a consequence of the curvature of spacetime caused by the uneven distribution of mass/ energy; and resulting in gravitational time dilation, where time lapses more slowly in lower (stronger) gravitational potential. However, for most applications, gravity is well approximated by Newton's law of universal gravitation, which postulates that gravity causes a force where two bodies of mass are directly drawn (or 'attracted') to each other according to a mathematical relationship, where the attractive force is proportional to the product of their masses and inversely proportional to the square of the distance between them. This is considered to occur over an infinite range, such that all bodies (with mass) in the universe are drawn to each other no matter how far they are apart.

Gravity is the weakest of the four fundamental interactions of nature. The gravitational attraction is approximately 10 times the strength of the strong force (i.e. gravity is 38 orders of magnitude weaker), 10 times the strength of the electromagnetic force, and 10 times the strength of the weak force. As a consequence, gravity has a negligible influence on the behavior of subatomic particles, and plays no role in determining the internal properties of everyday matter (but see quantum gravity). On the other hand, gravity is the dominant interaction at the macroscopic scale, and is the cause of the formation, shape, and trajectory ( orbit) of astronomical bodies. It is responsible for various phenomena observed on Earth and throughout the universe; for example, it causes the Earth and the other planets to orbit the Sun, the Moon to orbit the Earth, the formation of tides, and the formation and evolution of galaxies, stars and the Solar System.

In pursuit of a theory of everything, the merging of general relativity and quantum mechanics (or quantum field theory) into a more general theory of quantum gravity has become an area of research.

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.

Category:Physical quantities

Gravity, or gravitation, is the mass-proportionate force of attraction among matter.

Gravity may also refer to:

GRAVITY Co., Ltd. (also known as Gravity Corporation) is a South Korean video game corporation primarily known for the development of the MMORPG Ragnarok Online.

Gravity is the second studio album by the New Flamenco artist Jesse Cook.

Gravity is a fictional character, a superhero appearing in American comic books published by Marvel Comics. The character was created by Sean McKeever and Mike Norton, who wanted to create their own character inspired by the college-aged Spider-Man from the 80s they grew up with.

"Gravity" is the lead single from Out of Nothing, the fourth album by English rock band Embrace. Written by Coldplay, the song was first performed live by Coldplay in 2002. Ultimately, Chris Martin gave the song to Embrace. "Gravity" peaked at #7 on the UK Singles Chart. It was released on CD format and red 7" vinyl. It later became the theme song to the TV show Mike Bassett: Manager, starring Ricky Tomlinson.

The B-side, "Wasted", started off as "Logical Love Song" and was originally conceived during the Drawn from Memory sessions.

"Gravity" was re-recorded by Coldplay in late 2005 and is included as a B-side to their single " Talk".

The songs "Too Many Times", "The Shot's Still Ringing", and "Waterfall" are featured on the B-sides compilation Dry Kids: B-Sides 1997-2005.

The song was used in Series 2 Episode 7 of Gavin and Stacey when Nessa was giving birth to "Neil The Baby".

Gravity is the fifth studio album by the Canadian rock band Our Lady Peace. It was released on June 18, 2002 by Columbia Records in North America. The album became a worldwide success, charting highly both in Canada and the United States with the hit singles " Somewhere Out There" and " Innocent".

The album title, Gravity, was inspired by the chorus lyrics "Falling back to me, defying gravity" from the track "Somewhere Out There". At the time of the album's release, OLP drummer Jeremy Taggart said that Gravity was "by far [their] best album".

Gravity was the first album to feature new guitarist, Steve Mazur, who replaced Mike Turner in 2002 after the latter's departure, which the band was feeling limited by Mike Turner guitar abilities in the studio. The band also wanted a guitarist who can really stand up and have a strong voice. Despite of Mike Turner departure, Turner appears on half the tracks on the album, however, having recorded parts for several songs on the album prior to his departure. This was also their last album with musician Jamie Edwards, who had performed on two prior albums and was briefly an official member, but left the band soon after the album's completion.

It is the band's first album not to be produced by their original producer, Arnold Lanni, who produced the band's previous four studio albums. The band originally wanted Lanni to produce their fifth album but he was busy working with Simple Plan and the band instead chose Bob Rock, which he also produced their next album.

The album was originally about to be a live album based on the Spiritual Machines tour with three new tracks, however, Bob Rock then asked the band if they would like to work on an entire full-length studio album which the band accepted.

Gravity, in the context of fermenting alcoholic beverages, refers to the specific gravity, or relative density compared to water, of the wort or must at various stages in the fermentation. The concept is used in brewing and wine making industry. Specific gravity is measured by a hydrometer, refractometer, pycnometer or oscillating U-tube electronic meter. People commonly refer to the high gravity yeast used to increase the specific gravity of alcoholic beverages as 'Miracle Yeast'.

The density of a wort is largely dependent on the sugar content of the wort. During alcohol fermentation, yeast converts sugars into carbon dioxide and alcohol. The decline in the sugar content and the presence of ethanol (which is appreciably less dense than water) drop the density of the wort. The percentage of alcohol can be calculated from the difference between the original gravity (abbreviated OG) of the wort and the current specific gravity (abbreviated SG) of wort. By monitoring the decline in SG over time the brewer obtains information about the health and progress of the fermentation and determines that it is complete when gravity stops declining. If the fermentation is finished, the specific gravity is called the final gravity (abbreviated FG). For example, for a typical strength beer, OG could be 1.050 and FG could be 1.010.

Several different scales have been used for measuring the original gravity. For historical reasons, the brewing industry largely uses the Plato scale (°P), which is essentially the same as the Brix scale used by the wine industry. For example, OG 1.050 is roughly equivalent to 12°P.

By considering the original gravity, the brewer or vintner obtains an indication as to the probable ultimate alcoholic content of their product. The OE (Original Extract) is often referred to as the "size" of the beer and is, in Europe, often printed on the label as Stammwürze or sometimes just as a percent. In the Czech Republic, for example, they speak of "10 degree beers", "12 degree beers" which refers to the gravity in Plato of the wort before the fermentation.

Gravity is the acclaimed second album from Hip Hop group Da Bush Babees. The crew got help from a number of fellow Native Tongues members, including The Ummah, Mos Def and De La Soul's Posdnous. The lead single "The Love Song" received strong airplay prior to the album's release. Along with De La Soul's Stakes Is High, Gravity is notable for jump-starting the hip-hop career of Mos Def, who is featured on three tracks on the album ("Intro," "The Love Song," and "S.O.S."). However Warner Bros. released this group from its contract after the album ran its course.

Gravity is the début album of Alejandro Escovedo. Heinz Geissler and John Kunz were the Executive Producers.

"Gravity" is a song by American singer-songwriter guitarist John Mayer and is featured on three of his releases: the 2005 live album Try! by the John Mayer Trio, his 2006 studio album Continuum, and his 2008 live album Where the Light Is: John Mayer Live in Los Angeles. In 2007, the song was released as the third single from Continuum.

Gravity is a 1980 solo album by English guitarist, composer and improviser Fred Frith from Henry Cow and Art Bears. It was Frith's second solo album and his first since the demise of Henry Cow in 1978. It was originally released in the United States on LP record on The Residents's Ralph record label and was the first of three solo albums Frith made for the label.

Gravity was recorded in Sweden, the United States and Switzerland and featured Frith with Swedish Rock in Opposition group Samla Mammas Manna on one side of the LP, and Frith with United States progressive rock group The Muffins on the other side. Additional musicians included Marc Hollander from Aksak Maboul and Chris Cutler from Henry Cow.

Gravity has been described as an avant-garde "dance" record that draws on rhythm and dance from folk music across the world. AllMusic called it one of the most important experimental guitar titles from Fred Frith.

"Gravity" is the 107th episode of the American science fiction television series Star Trek: Voyager originally airing on the UPN network, the 13th episode of the fifth season.

Gravity is the third studio album by saxophonist Kenny G. It was released in 1985, and reached number 13 on the Billboard Jazz Albums chart, number 37 on the R&B/Hip-Hop Albums chart and number 97 on the Billboard 200.

Gravity is a song by Maaya Sakamoto that is sung in the English language. An abridged version (omitting the opening, middle section and ending) is played as the closing theme of Wolf's Rain. It is also renditioned in her 15th Memorial Live "Gift" concert.

Gravity is the fourth studio album by progressive rock band Anekdoten released in June 2003 in both CD and Vinyl LP formats. The first Japanese LP edition contained a bonus CD of material recorded live at Nearfest 2000.

Gravity is the fourth album by Out of the Grey, released on August 1, 1995. It saw the second album that brought the band into an Adult Contemporary vein, which appealed to contemporary Christian music radio formats with several singles, but did not appeal to the band.

"Gravity" is a song performed by Sara Bareilles, released the third single from her major-label debut album Little Voice (2007). Written by Bareilles, the track was produced by Eric Rosse. Its music video was released on February 3, 2009. Bareilles said she wrote the song after her "first real heartbreak", and was hoping the ballad would help others in similar situations. The song was originally on her first album Careful Confessions, but was later included on Little Voice.

Gravity (ver. 2.01) is a software program designed by Steve Safarik to simulate the motions of planetary bodies in space. Users can create solar systems of up to 16 bodies. Mass, Density, Initial position, and Initial velocity can be varied by user input. The bodies are then plotted as they move according to the laws of gravitation. Simulation settings may saved as files with the extension ".GRV"

Gravity is an American comedy-drama television series created by Jill Franklyn and Eric Schaeffer. It ran for one season in 2010 on Starz.

"Gravity" is a song by English recording artist Pixie Lott from her debut album, Turn It Up (2009). Written by Ina Wroldsen, Jonas Jeberg, Mich Hansen and Lucas Secon, the song was released as the album's fourth single on 8 March 2010.

Gravity is the tenth and final studio album by the Irish pop band Westlife. It was released on 22 November 2010 in the United Kingdom. John Shanks produced each song, barring the bonus track on the Japanese edition. The album was preceded by the lead single, " Safe", which was released at 14 November 2010. This is also the group's final album under Syco Music; Syco decided that there will be no second single from the album, which was one reason the group left Syco in March 2011. As of November 2011, the album had sold 358,943 in the UK.

"Gravity" is the twelfth single by Japanese rock band Luna Sea, released on March 29, 2000. It is the band's sixth and last to reach number 1 on the Oricon singles chart. A computer-generated portrait combining facial features from all five members is placed on the inner cover of this single, nicknamed "Tom", which also appears in their album Lunacy.

Gravity was a Twitter and social networking client for Symbian smartphones. Apart from Twitter it also connects to StatusNet, Facebook, Foursquare, Google reader, Sina Weibo and YouTube. It was developed by Jan Ole Suhr.

"Gravity" is a song recorded by Ukrainian singer Zlata Ognevich. The song was written by Mikhail Nekrasov and Karen Kavaleryan. It is best known as Ukraine's entry to the Eurovision Song Contest 2013 held in Malmö, Sweden. The song qualified the first semi-final of the competition on 14 May 2013 and placed 3rd in the final on 18 May 2013, scoring 214 points.

Gravity is a 2013 British-American science fiction film co-written, co-edited, produced and directed by Alfonso Cuarón. It stars Sandra Bullock and George Clooney as astronauts who are stranded in space after the mid-orbit destruction of their space shuttle, and their subsequent attempt to return to Earth.

Cuarón wrote the screenplay with his son Jonás and attempted to develop the film at Universal Pictures. The rights were sold to Warner Bros. Pictures, where the project eventually found traction. David Heyman, who previously worked with Cuarón on Harry Potter and the Prisoner of Azkaban (2004), produced the film with him. Gravity was produced entirely in the United Kingdom, where the British visual effects company Framestore spent more than three years creating most of the film's visual effects, which make up over 80 of its 91 minutes.

Gravity opened the 70th Venice International Film Festival on August 28, 2013 and had its North American premiere three days later at the Telluride Film Festival. Upon its release in both the Telluride Film Festival in August, and its October 4, 2013 release in the United States and Canada, Gravity was met with near-universal critical acclaim, and has been regarded as one of the best films of 2013. Emmanuel Lubezki's cinematography, Steven Price's musical score, Cuarón's direction, Bullock's performance, Framestore's visual effects, and its use of 3D were all particularly praised by numerous critics. The film became the eighth-highest-grossing film of 2013 with a worldwide gross of over .

At the 86th Academy Awards, Gravity received a leading ten Academy Award nominations (tied with American Hustle) and won seven (the most for the ceremony), including the following: Best Director (for Cuarón), Best Cinematography (for Lubezki), Best Visual Effects, Best Film Editing, Best Sound Mixing, Best Sound Editing, and Best Original Score (for Price). The film was also awarded six BAFTA Awards, including Outstanding British Film and Best Director, the Golden Globe Award for Best Director, seven Critics' Choice Movie Awards and a Bradbury Award.

Gravity is the 56th studio album by American musician James Brown. The album was released on September 15, 1986, by Scotti Bros. Records. It was largely written and produced by Dan Hartman and Charlie Midnight, the authors of the album's previously released hit single " Living in America", which had reached #4 on the Billboard Hot 100 and was prominently featured in the film Rocky IV. It was Brown's first album for the Scotti Brothers record label.

The album's title track became a minor hit on both the pop and R&B charts, while the tango-based slow jam " How Do You Stop" cracked the R&B top ten. The album track "Turn Me Loose, I'm Dr Feelgood" was used as the theme song for the Australian TV sketch comedy series The Late Show (1992–93) and is often played by Major League Baseball's Philadelphia Phillies when one of their batters hits a home run at Citizens Bank Park.

Gravity is the sixth studio album by American Christian hip hop artist Lecrae, released on September 4, 2012. The album features appearances from Big K.R.I.T., Mathai, Ashthon Jones, and Mali Music, along with labelmates Trip Lee, Andy Mineo, Derek Minor, who was formerly known as PRo, and Tedashii. Producers on the album include DJ Khalil, Street Symphony's Heat Academy, and The Watchmen. The first single off the album, "I Know", was released on July 24, 2012, and was followed by "Tell the World" featuring Mali Music on August 15, 2012, and " Mayday" featuring Big K.R.I.T. and Ashthon Jones on August 30, 2012. Reach Records released five music videos for the album: "Lord Have Mercy", featuring Tedashii along with No Malice of Clipse, on August 1, 2012, "Tell the World", featuring Mali Music, on October 19, 2012, "Mayday", featuring Big K.R.I.T. and Ashthon Jones, on December 13, 2012, "Fakin'", featuring Thi'sl, on February 1, 2013, and " Confe$$ions", featuring David Banner, on April 30, 2013.

The first week of sales for the album set a new record for Lecrae, with Gravity debuting at No. 3 on the Billboard 200 with 72,000 units sold, and was the biggest sales week ever for a Christian hip hop album. The bonus track "Fuego" featuring KB and Suzy Rock from the iTunes deluxe edition of the album peaked at No. 20 on the Billboard Top Heatseekers Songs, No. 13 on the R&B/Hip-Hop Digital charts, and No. 64 on the Hot Digital Songs charts. Critically, Gravity was very well received, and is considered Lecrae's strongest, most mainstream work to date. It won Best Gospel Album at the 2013 Grammy Awards and Best Rap/Hip Hop Album at the 2013 Dove Awards.

"Gravity" is a song written by Dan Hartman and Charlie Midnight and recorded by James Brown. It appears on Brown's 1986 album of the same name. It was also released as a single and charted #26 R&B and #93 Pop.

Gravity is a start up Content Personalization Company based out of Los Angeles, USA. They help publishers and advertisers deliver personalized content and ads. The company was founded in 2009 by Amit Kapur, Jim Benedetto, and Steve Pearman. The company was recently acquired by AOL in January 2014 for a reported $90.7 million.

Gravity is the fifth studio album by American country music duo Big & Rich, and was released on September 23, 2014. The duo announced that they had begun work on their next album in summer 2013 before releasing the album's lead off single, " Look at You," in January 2014. In addition to releasing the single, the duo announced that they had started their own record label, Big & Rich Records, which will handle the release of this album.

Gravity is the third album from Crashcarburn, released in 2012.

"Gravity" is a song by DJ Fresh, an English drum and bass producer and DJ, released as the fifth single from Fresh's forthcoming fourth studio album. It was released on 8 February 2015 in the United Kingdom. The song features English recording artist Ella Eyre.

The song also features on Eyre's debut studio album Feline (2015).

"Gravity" is a single by the Japanese rock band Nothing's Carved in Stone released on January 14, 2015.

"Gravity" is a song by American rock band Papa Roach featuring vocals from Maria Brink of In This Moment. It served as the second single from the band's seventh studio album F.E.A.R.. The song was released on April 22, 2015.

Gravity is an EP album from the American pop-rock band Against the Current. The EP was released on February 17, 2015.