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The Collaborative International Dictionary
Jamming

Jam \Jam\, v. t. [imp. & p. p. Jammed (j[a^]md); p. pr. & vb. n. Jamming.] [Either fr. jamb, as if squeezed between jambs, or more likely from the same source as champ See Champ.]

  1. To press into a close or tight position; to crowd; to squeeze; to wedge in; to cram; as, rock fans jammed the theater for the concert.

    The ship . . . jammed in between two rocks.
    --De Foe.

  2. To crush or bruise; as, to jam a finger in the crack of a door. [Colloq.]

  3. (Naut.) To bring (a vessel) so close to the wind that half her upper sails are laid aback.
    --W. C. Russell.

  4. To block or obstruct by packing too much (people or objects) into; as, shoppers jammed the aisles during the fire sale.

  5. (Radio) To interfere with (a radio signal) by sending other signals of the same or nearby frequency; as, the Soviets jammed Radio Free Europe broadcasts for years during the cold war.

  6. To cause to become nonfunctional by putting something in that blocks the movement of a part or parts; as, he jammed the drawer by putting in too many loose papers; he jammed the lock by trying to pick it.

Wiktionary
jamming
  1. (context slang English) Great; awesome. n. The act or process of jamming. v

  2. (present participle of jam English)

WordNet
jamming

See jam

jam
  1. v. press tightly together or cram; "The crowd packed the auditorium" [syn: throng, mob, pack, pile]

  2. push down forcibly; "The driver jammed the brake pedal to the floor"

  3. crush or bruise; "jam a toe" [syn: crush]

  4. interfere with or prevent the reception of signals; "Jam the Voice of America"; "block the signals emitted by this station" [syn: block]

  5. get stuck and immobilized; "the mechanism jammed"

  6. crowd or pack to capacity; "the theater was jampacked" [syn: jampack, ram, chock up, cram, wad]

  7. block passage through; "obstruct the path" [syn: obstruct, obturate, impede, occlude, block, close up] [ant: free]

  8. [also: jamming, jammed]

jamming

n. deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems [syn: electronic jamming, jam]

jam
  1. n. preserve of crushed fruit

  2. informal terms for a difficult situation; "he got into a terrible fix"; "he made a muddle of his marriage" [syn: fix, hole, mess, muddle, pickle, kettle of fish]

  3. a dense crowd of people [syn: crush, press]

  4. deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems [syn: jamming, electronic jamming]

  5. [also: jamming, jammed]

Wikipedia
Jamming

Jamming may refer to:

  • Interfering with communications or surveillance:
    • Radio jamming
    • Radar jamming and deception
    • Mobile phone jammer
    • Echolocation jamming
    • Radio-controlled Improvised Explosive Device jamming, a Counter-IED technique
  • Jamming (dance), cheered show-offs during social dancing
  • Jamming (fanzine), a UK music fanzine of the 1970s–80s
  • Jamming (physics), an apparent change of physical state
  • "Jamming" (song), from Bob Marley's album Exodus
  • " Master Blaster (Jammin')", a song by Stevie Wonder from the album Hotter Than July
  • Jammin', BBC Radio 2 musical comedy show that aired since 2001
  • Jammin, Sí TV reality television series that aired from 2006-2008
  • Culture jamming, criticizing mass media through its own methods
  • Jam session, a semi-improvised rock or jazz performance
  • A rock climbing technique
  • Jamming (knot), the tendency of knots to become difficult to untie
  • Jamming, the movement of machine parts against each other, usually due to insufficient lubrication
Jamming (dance)

Jamming in dance culture is a kind of informal show-off during a social dance party. Dancers clear a circle (jam circle or dance circle) and dancers or dance couples take turns showing their best tricks while the remaining dancers cheer the jammers on. While some jam circles are staged, most form organically and spontaneously when the energy and mood is right.

Jamming (song)

"Jamming" is a song by the reggae band Bob Marley & the Wailers from their 1977 album Exodus. The song also appears on the compilation album Legend. The song was re-released 10 years later as a tribute to Bob Marley and was again a hit, as in the Netherlands, where it was classified in the charts for 4 weeks. In Jamaican patois the word jamming refers to a getting together or celebration. It is still receiving moderate airplay from adult alternative stations.

Bob Marley's wife Rita Marley has performed the song during the tribute concert "Marley Magic: Live In Central Park At Summerstage". Marley's children " Ziggy Marley and the Melody Makers" have performed the song during their concerts. Their live version of the song appears on the concert CD/DVDs " Live Vol. 1" and "Ziggy Marley and the Melody Makers Live".

Jamming (physics)

Jamming is the physical process by which some materials, such as granular materials, glasses, foams, and other complex fluids, become rigid with increasing density. The jamming transition has been proposed as a new type of phase transition, with similarities to a glass transition but very different from the formation of crystalline solids.

While a glass transition occurs when the liquid state is cooled, the jamming transition happens when density is increased. This crowding of the constituent particles prevents them from exploring phase space, making the aggregate material behave as a solid. The system may be able to unjam if the temperature is increased, or external stresses are applied.

The jamming phase diagram relates the jamming transition to inverse density, stress and temperature.

The density at which systems jam is determined by many factors, including the shape of their components, the deformability of the particles, frictional interparticle forces, and the degree of dispersity of the system. The overall shape of the jamming manifold may depend on the particular system. For example, a particularly interesting feature of the jamming transition is the difference between attractive and repulsive systems. Whether the jamming surface diverges for high enough densities or low temperatures is uncertain.

Simulations of jammed systems study particle configurations leading to jamming in both static systems and systems under shear. Under shear stress, average cluster size may diverge after a finite amount of strain, leading to a jammed state. A particle configuration may exist in a jammed state with a stress required to “break” the force chains causing the jam.

A static sand pile is jammed under the force of gravity and no energy is being dissipated. Systems which are consuming energy are also sometimes described as being jammed. An example is traffic jams, where due to jamming the average velocity of cars on a road may drop sharply. Here the cars on a road may be thought of as a like a granular material or a non-newtonian fluid that is being pumped through a tube. There under certain conditions the effective viscosity may rapidly increase, dramatically increasing the granular material or fluids's resistance to flowing and so causing the velocity to drop or even come to a complete stop. In this analogy the cars are like the grains in a granular material and if they are dense enough (i.e., closely enough spaced along the road) then interactions between the cars (as they must avoid each other to avoid crashing) cause jamming. A simple model of this behavior is the Nagel-Schreckenberg model.

Usage examples of "jamming".

Ty watched his own feet leave the ice as Greg Porter, a gorilla-sized defenseman for Dallas, smashed him into the boards, his left shoulder jamming up into his ear.

Down in Australia however, the hastily appointed French translator to Parliament was having trouble convincing the government that this new radio gargling was a jamming field of some kind and not an obscure form of the Gaulic tongue.

Caamas Document and then punch it out through whatever jamming the Imperials have going.

The Migs were inbound without radar, without jamming, without any electronic indication that they were doing anything besides conducting routine training operations.

A single MiG got a radar contact off a retreating jamming aircraft and radioed Keflavik, only to learn from his ground controllers that nothing was on the scopes out to a range of three hundred kilometers.

Above, traffic copters clipped and hummed among the air traffic to keep the rubberneckers from jamming the sky as well.

He grabbed his Hobie seabag off the floor and began frantically jamming things into it.

Dorcas pegged her jockey cap on the head of a marble statue of the great local hero, Smuggler Jim Biggins, and jamming her red hair behind her ears, squared her shoulders and got down to the serious business of twiddling dials.

Two thousand people gathered, while men who had blackened their faces with coal dust set about methodically tearing up tracks, jamming switches, derailing cars, setting fire to cabooses and also to a railroad bridge.

Fortunately, Sophie decided on the more conventional route, jamming the wheel hard to the right, circling properly until she exited, cut left, and swung into the northbound lane, accelerating toward Rue de Rivoli.

Worse, radio control was of a new type, and the experts had, as yet, found no way of jamming it.

The Menace is loose again, the Hell's Angels, the hundred-carat headline, running fast and loud on the early morning freeway, low in the saddle, nobody smiles, jamming crazy through traffic and ninety miles an hour down the center stripe, missing by inches.

Lesser breeds had to paddle for it in the scummy, brackish canals of Times Square, Wall Street, Rockefeller Center, and other unimportant places, fending off lumps of offal and each other as best they could, or jamming over the interbuilding bridges, or trying to flag down an occasional blimp.

They surged into the front hall and grabbed their parkas from the coatrack and jostling and complaining at one another they arrayed themselves for the out-of-doors, slinging knapsacks over their backs, jamming gloves onto their hands, winding and knotting scarves.

If the Magelords were jamming hi-comms as Captain Rosselin-Metadi claimed, realtime updates from other ships in the fleet would have stopped as well.