Velocity of rotation about some specified axis.

A maneuver in which an aircraft is descending in a stall and rotating. It may be performed intentionally or accidentally.

the angular momentum of an electron

Spin is a detailed subject, but its definition is this: a property of particles that is similar to the idea of angular momentum in classical physics. You might want to read some of the books in the Individual Exploration for a more complete description that we give here. See also: Debriefing

See rotation.

A number that labels the intrinsic angular momentum of a particle, essentially how much the particle rotates around its axis. This number can only take on discrete values. Particles with different spins will interact in different ways. Electrons have spin 1/2, while photons have spin one.

The rapid rotation of an aircraft after it has stalled. In order to recover the aircraft it is necessary to first increase the airspeed so that the flying surfaces are no longer stalled.

a property of subatomic particles which corresponds most closely with our concept of rotation about an axis.

a quantum mechanical version of the familiar notion of the same name; particles have an intrinsic amount of spin that is either a whole number or half a whole number (in multiples of Planck's constant), and which never changes.

To lose control so that the car revolves around its vertical axis. Also "spin out."

Spin is an intrinsic property of particles which behaves analogously to angular momentum. Neutrons and protons have spin 1/2.

The intrinsic angular momentum of a particle; for bosons, this value must be an integer, while for fermions, it must be half an odd integer.

a unit of angular momentum used in particle physics. The spin unit is equal to Planck's constant divided by 2 pi, or approximately 105.457 27 x 10-36 joule second (J·s). The spin of an elementary particle is always a simple multiple of this unit.

Each game in roulette is called a spin. Used as a verb, spin would mean to turn the wheel or the movement of the ball. The ball is spun on the outside, stationary rim of the roulette wheel.

The name given to the angular momentum carried by a particle. For composite particles the spin is made up from the combination of the spins of the constituents plus the angular momentum of their motion around one-another. For fundamental particles spin is an intrinsic and inherently quantum property, it cannot be understood in terms of motions internal to the object.

a kitesurfing trick where the kiter rotates one or more times during a jump. A spin is when the rider and board rotate around on a vertical axis. A spin can be either a forward or backward rotation.

(MRI) The spinning of a proton within a nucleus around its axis which creates a magnetic field

The built-in angular momentum possessed by a particle even when at rest.

a swift whirling motion (usually of a missile)

revolve quickly and repeatedly around one's own axis; "The dervishes whirl around and around without getting dizzy"

stream in jets, of liquids; "The creek spun its course through the woods"

An internal property of elementary particles, related to, but not identical to, the everyday concept of spin.

An intrinsic property of particles. (That is, a property which does not change. Mass and electric charge are examples of intrinsic properties.) Spin is related to the usual notion of spin, though it is a little more difficult to understand. Spin comes in units of 1/2, so that a particle may have a spin of 0, 1/2, 1, 3/2, and so on. A particle's spin determines whether it is a Fermion or a Boson.

The characteristic of a particle that causes it to rotate about an axis in a consistent direction.

Rotation about the body's vertical axis while in the vertical position.

rotation of the ball as it moves through the air, affecting its trajectory and bounce

Angular momentum of the nucleus.

AMSAT-OSCAR 40 can be stabilized in two different forms in its attitude: by self-rotation (spinning) of the whole satellite about its Z-axis and by three spin-wheels, that rotate inside the satellite, three-axis-control. For the time of the tests and preparations for the later normal-business, AO-40 works in spin-mode. Like with a toy gyro the stabilizing effect is the bigger the speed (spin)increases. However, the magnetic attitude-control becomes more difficult with increasing speed. As the antennas of the higher bands, L, S, C, X, Ka, are not symmetrically placed on the satellite spinfading and spinwobbling can be observed. Spinfading originates at times of occultation at the antenna-side-lobes or distortions of the antenna-pattern by other parts on the satellite's surface. Spinwobbling is a small Doppler-effekt. Through the rotation of the satellite, some antennas come cyclically closer to and depart from the observer. By this relatively movement, a Doppler-effekt originates of up to 100 Hz according to band, speed and antenna-orientation. Also the speed of the satellite can be determined with the spinfading and particularly the spinwobbling.

An ascending or descending rotation in a vertical position, performed in a uniform motion unless otherwise specified.

Intrinsic angular momentum of a particle, given in units of , the quantum unit of angular momentum, where = = 6.58 x 10-34 Js.

Intrinsic angular momentum, where h-bar=h/2 = 6.58x10^(-34) Js.

Electrons have an intrinsic angular momentum that is similar to what would be observed if they were spinning. Electron spin is sometimes called a "twoness" property because it can have two values, referred to as "spin up" and "spin down". Nuclei can have spins of their own.

The angular momentum that a moving object has is determined by mass, size and spin. It is more difficult to stop a merry-go-round than a small top. Civil War soldiers could have their foot taken off while trying to stop a rolling cannon ball because of its momentum.

A spin occurs when only one wing stalls and the other stays flying. This might happen if flying speed is lost while the aircraft is turning, with the inside wing travelling more slowly than the outer one. The unbalanced lift created by the partial stall causes the plane to rotate, while the loss of lift causes it to descend. Unless the pilot recognises the situation and takes the appropriate recovery action, a spin will continue until the ground is reached with disasterous results.

A freestyle technique in which the skater revolves rapidly on his/her own axis, in one spot on one foot. In competition all spins must include at least six rotations. Spins may be performed in many positions with some named for body positions during the spin, such as sit spin, layback spin or cross-foot spin.

The amount of rotation that a black hole possesses. What types of black holes are there

The rotation of the ball in flight, which is imparted by the point on the ball contacted by the racquet, the angle of the racquet face at the time of contact, and the direction of the racquet during the swing. Underspin (or backspin, or cut), which causes the ball to rotate backward for the direction in which it is travelling, is the most common type of spin in squash. It is basically imparted by an open-face racquet contacting the ball slightly on the underside, and the result is that the ball stays low and dies after contacting the front wall. Sidespin or slice, which gives the ball a sideways rotation during its forward flight, is used mostly in touch shots. It is basically imparted by contacting the ball slightly to either side and drawing the racquet across the ball in the opposite direction from the point of contact with an open-faced racquet. The result is that the ball will bounce slightly sideways opposite from the predictable direction. Topspin is used very little in squash, save in the hard serve. It is imparted by coming over the ball with a closed racquet face.

Corners and mids have more than one color, so can be rotated (around their own axis) even though their position doesn't change (OK, so centers can be spun too, but there'd be no noticeable difference, so there's no point for us to give them spin).

rotation of the ball as it flies through the air towards the batsman. sideways movement of the ball in its trajectory towards the batsman, caused when the ball bounces on the pitch, by the rotation of the ball. That ball had some spin on it. v.t. to get the ball to move sideways when it bounces on the pitch by giving the ball. The bowler spun the ball away from the batsman. v.i. (of the ball) to move sideways on bouncing because of spin(2). The ball spun a long way. adj. describing a bowler who uses spin(2) to move the ball. He is a spin bowler. adj. describing the style of bowling in which the ball is bowled slowly, using spin(2) to attempt to take wickets. He is proficient at spin bowling.

A Full rotation of the body on one foot

Rotational jump

A maneuver in which a skater rotates over a position on the ice.

Any rotation of the ball while it travels through the air. Spin can alter the trajectory and bounce of the ball.

To lose control of the car, so it revolves quickly around its own axis.

The rapid rotation of the projectile caused by the spiral rifling of the bore. At the muzzle of a high-velocity rifle, spin can be in excess of 300,000 revolutions per minute.

A quantum particle property of intrinsic angular momentum. [ ] [ Close Glossary

In physics, spin is the angular momentum intrinsic to a body, as opposed to orbital angular momentum, which is the motion of its center of mass about an external point. In classical mechanics, the spin angular momentum of a body is associated with the rotation of the body around its own center of mass. For example, the spin of the Earth is associated with its daily rotation about the polar axis.

In radio broadcasting, a spin is a single play of a song. The term is also used as a unit to measure (or induce) popularity, typically in spins per week. This measure is also known as rotation, and is most heavily used at Top 40 radio stations, some non-traditional radio formats, and others with descendant radio formats.

A spin is a breakdance move that involves rotation of the breaker's body about some axis in contact with the ground. It is possible to perform a spin on virtually any part of the body, but bare skin often causes painful and spin-killing friction with the floor. To solve this problem, many breakers employ pieces of cloth or wear long clothing, pads, or caps.

an aggravated stall that results in autorotation involving a rapid descent in a corksrew path

an aggravated stall where one wing produces more lift than the other, resulting in autorotation

a stall that has continued, with one wing more stalled than the other

a dangerous situation for an aircraft when, after suffering a stall (loss of lift), one wing creates lift while the other is stalled - this causes the aircraft to rapidly spin and if not corrected results in a crash.

Another aerobatic maneuver in which the aircraft is flown vertically towards the ground while rolled. As with all maneuvers - be extra careful.

A phenomenon which occurs when all lift is lost and the aircraft descends like a falling leaf. Control is normally restored by centering all control surfaces.

In aviation, a spin is an aggravated stall resulting in autorotation wherein the aircraft follows a downward corkscrew path. Spins are characterized by high angle of attack, low airspeed, and high rate of descent. Spins are not spiral dives, which are characterized by low angle of attack and high airspeed, and are not a type of stall.

The attempt to place a favourable interpretation on an event so that people or the media will interpret it in that way. Those performing this act are known as spin doctors.

The interpretation of persuasive events by journalists, academics, and politicians.

a distinctive interpretation (especially as used by politicians to sway public opinion); "the campaign put a favorable spin on the story"

make up a story; "spin a yarn"

The particular interpretation or emphasis applied to information, in order to make people believe an interpretation of said information is favourable to the teller, but not necessarily the full truth.

jargon for the point of view or bias you create in a story

hidden slant of a press source, which usually casts the client in a positive light

A lie used to explain a politician didn't say what you just heard.

A politician's attempt to shape the way the public looks at an issue or event, much the way a tennis player uses spin to direct the ball. Political advisers who spin are known as "spin doctors."

To form (a web, a cocoon, silk, or the like) from threads produced by the extrusion of a viscid, transparent liquid, which hardens on coming into contact with the air; -- said of the spider, the silkworm, etc.

To practice spinning; to work at drawing and twisting threads; to make yarn or thread from fiber; as, the woman knows how to spin; a machine or jenny spins with great exactness.

To stream or issue in a thread or a small current or jet; as, blood spinsfrom a vein.

work natural fibers into thread or yarn.

In-line twist on Vekoma inverted coasters.

an act of spell of spinning; rapid or lively movement; abbreviation or spinster; to draw out and twist the fibres of some suitable material, such as wool orflax, so as to form a continuous thread

The direction in which a fibre is spun resulting in an "S" or "Z", according to whether it is twisted in right-hand or left-hand direction. The act of spinning the wool holds the fibres together creating thread or yarn.

the act of rotating rapidly; "he gave the crank a spin"; "it broke off after much twisting"

form a web by making a thread; "spiders spin a fine web"

work natural fibers into a thread; "spin silk"

twist and turn so as to give an intended interpretation; "The President's spokesmen had to spin the story to make it less embarrasing"

The direction of a yarn's twist.

The manner in which fibers are twisted together to form a yarn. Yarns may be spun either clockwise or counter-clockwise, and they may be described as Z- or S- spun, depending upon whether the fibers are inclined in the direction of the diagonal stroke of the S or the Z.

Drawing out and twisting fibers into yarn or thread.

The relative direction of twist of yarns, "Z" spun or "S" spun.

v. smooth pedal motion or a short, sweet ride