spin

a particular viewpoint or bias, especially in the media; slant: put one’s own spin on a news story

spin

S0640400 (spĭn)v. spun (spŭn), spin·ning, spins v.intr.1. To rotate rapidly; whirl. See Synonyms at turn.2. To have a sensation of whirling, as from dizziness; reel: My head spun after I did a cartwheel.3. To make thread or yarn by drawing out and twisting fibers.4. To extrude viscous filaments, forming a web or cocoon.5. To fish with a light rod, lure, and line and a reel with a stationary spool.v.tr.1. To cause to rotate swiftly; twirl: spin a top.2. To shape or manufacture by a twirling or rotating process.3. Informal To play (a recorded piece of music, such as a phonograph record), especially as a disc jockey.4. To provide an interpretation of (a statement or event, for example), especially in a way meant to sway public opinion: "a messenger who spins bogus research into a vile theology of hatred" (William A. Henry III).5. a. To draw out and twist (fibers) into thread.b. To form (thread or yarn) in this manner.6. To form (a web or cocoon, for example) by extruding viscous filaments.7. To relate or create: spin a story.n.1. The act of spinning.2. A swift whirling motion.3. A state of mental confusion: I've been in a spin about this all week.4. Informal A short drive in a vehicle: took a spin in the new car.5. The flight condition of an aircraft in a nose-down, spiraling, stalled descent.6. a. A distinctive point of view, emphasis, or interpretation: "adept at putting spin on an apparently neutral recital of facts" (Robert M. Adams).b. A distinctive character or style: an innovative chef who puts a new spin on traditional fare.7. Physics a. The angular momentum of rotation of a rigid body about its own axis.b. The intrinsic angular momentum of a subatomic particle. Also called spin angular momentum.Phrasal Verbs: spin off To derive (a company or product, for example) from something larger. spin out1. To rotate out of control, as a skidding car leaving a roadway.2. To prolong or extend: spin out a visit with an old friend.Idiom: spin (one's) wheels Informal To expend effort with no result.

[Middle English spinnen, to twist fiber into thread, from Old English spinnan; see (s)pen- in Indo-European roots.]

spin

(spɪn) vb, spins, spinning or spun1. to rotate or cause to rotate rapidly, as on an axis2. (Textiles) a. to draw out and twist (natural fibres, as of silk or cotton) into a long continuous threadb. to make such a thread or filament from (synthetic resins, etc), usually by forcing through a nozzle3. (Zoology) (of spiders, silkworms, etc) to form (webs, cocoons, etc) from a silky fibre exuded from the body4. (Metallurgy) (tr) to shape (metal) into a rounded form on a lathe5. (tr) informal to tell (a tale, story, etc) by drawing it out at great length (esp in the phrase spin a yarn)6. (Ball Games, other than specified) to bowl, pitch, hit, or kick (a ball) so that it rotates in the air and changes direction or speed on bouncing, or (of a ball) to be projected in this way7. (intr) (of wheels) to revolve rapidly without causing propulsion8. (Aeronautics) to cause (an aircraft) to dive in a spiral descent or (of an aircraft) to dive in a spiral descent9. (foll by: along) to drive or travel swiftly10. (tr) Also: spin-dry to rotate (clothes) in a spin-dryer in order to extract surplus water11. (intr) to reel or grow dizzy, as from turning around: my head is spinning. 12. (Angling) (intr) to fish by drawing a revolving lure through the water13. (tr) informal to present (news or information) in a way that creates a favourable impressionn14. a swift rotating motion; instance of spinning15. (General Physics) physics a. the intrinsic angular momentum of an elementary particle or atomic nucleus, as distinguished from any angular momentum resulting from its motionb. a quantum number determining values of this angular momentum in units of the Dirac constant, having integral or half-integral values. Symbol: S or s 16. (Aeronautics) a condition of loss of control of an aircraft or an intentional flight manoeuvre in which the aircraft performs a continuous spiral descent because the angle of maximum lift is less than the angle of incidence17. a spinning motion imparted to a ball, etc18. (Ice Skating) (in skating) any of various movements involving spinning rapidly on the spot19. (Automotive Engineering) informal a short or fast drive, ride, etc, esp in a car, for pleasure20. flat spin informal chiefly Brit a state of agitation or confusion21. informal Austral and NZ a period of time or an experience; chance or luck; fortune: a bad spin. 22. (Commerce) commerce informal a sudden downward trend in prices, values, etc23. informal the practice of presenting news or information in a way that creates a favourable impression24. on the spin informal one after another: they have lost two finals on the spin. [Old English spinnan; related to Old Norse spinna, Old High German spinnan to spin, Lithuanian pinu to braid]

spin

(spɪn)

v. spun, spin•ning,
n. v.t. 1. to make (yarn) by drawing out, twisting, and winding fibers. 2. to form (the fibers of any material) into thread or yarn. 3. to produce (a thread, web, cocoon, etc.) by extruding from the body a viscous filament that hardens in the air. 4. to cause to rotate rapidly; twirl; whirl: to spin a coin on a table. 5. to produce, fabricate, or evolve in a manner suggestive of spinning thread: to spin a tale. 6. to draw out, protract, or prolong (often fol. by out): She spun the project out for over three years. 7. Slang. to cause to have a particular bias; influence in a certain direction: His assignment was to spin the reporters after the president's speech. v.i. 8. to revolve or rotate rapidly, as the earth or a top. 9. to produce a thread from the body, as a spider or silkworm. 10. to produce yarn or thread by spinning. 11. to move or travel rapidly. 12. to have a sensation of whirling; reel: My head began to spin. 13. to fish with a spinning or revolving bait. 14. spin off, to create or derive, based on something already existing: They took the character of the uncle and spun off another TV series. n. 15. the act of causing a spinning or whirling motion. 16. a spinning motion or movement. 17. a downward movement or trend, esp. one that is sudden, alarming, etc. 18. a short ride or drive for pleasure. 19. Slang. a particular viewpoint or bias, esp. in the media; slant: They tried to put a favorable spin on the news coverage of the controversial speech. 20. Also called tailspin. the descent of an aircraft, nose-down, in a helical path. 21. Physics. the intrinsic angular momentum characterizing each kind of elementary particle, having one of the values 0, ½, 1, 3/2, … when measured in units of Planck's constant divided by 2π. Idioms: spin one's wheels, to waste one's efforts. [before 900; Middle English; Old English spinnan, c. Old Frisian, Old Norse spinna, Middle Low German, Old High German spinnen, Gothic spinnan] syn: See turn.

spin

Past participle: spun
Gerund: spinning

Imperative
spin
spin

Present
I spin
you spin
he/she/it spins
we spin
you spin
they spin

Preterite
I spun
you spun
he/she/it spun
we spun
you spun
they spun

Present Continuous
I am spinning
you are spinning
he/she/it is spinning
we are spinning
you are spinning
they are spinning

Present Perfect
I have spun
you have spun
he/she/it has spun
we have spun
you have spun
they have spun

Past Continuous
I was spinning
you were spinning
he/she/it was spinning
we were spinning
you were spinning
they were spinning

Past Perfect
I had spun
you had spun
he/she/it had spun
we had spun
you had spun
they had spun

Future
I will spin
you will spin
he/she/it will spin
we will spin
you will spin
they will spin

Future Perfect
I will have spun
you will have spun
he/she/it will have spun
we will have spun
you will have spun
they will have spun

Future Continuous
I will be spinning
you will be spinning
he/she/it will be spinning
we will be spinning
you will be spinning
they will be spinning

Present Perfect Continuous
I have been spinning
you have been spinning
he/she/it has been spinning
we have been spinning
you have been spinning
they have been spinning

Future Perfect Continuous
I will have been spinning
you will have been spinning
he/she/it will have been spinning
we will have been spinning
you will have been spinning
they will have been spinning

Past Perfect Continuous
I had been spinning
you had been spinning
he/she/it had been spinning
we had been spinning
you had been spinning
they had been spinning

Conditional
I would spin
you would spin
he/she/it would spin
we would spin
you would spin
they would spin

Past Conditional
I would have spun
you would have spun
he/she/it would have spun
we would have spun
you would have spun
they would have spun

Thesaurus

Noun	1.	spin - a swift whirling motion (usually of a missile)gyration, revolution, rotation - a single complete turn (axial or orbital); "the plane made three rotations before it crashed"; "the revolution of the earth about the sun takes one year"backspin - spin (usually of a moving ball) that retards or reverses the forward motionEnglish, side - (sports) the spin given to a ball by striking it on one side or releasing it with a sharp twisttopspin - forward spin (usually of a moving ball) that is imparted by an upward stroke
	2.	spin - the act of rotating rapidly; "he gave the crank a spin"; "it broke off after much twisting"twirl, twisting, whirl, twistrotary motion, rotation - the act of rotating as if on an axis; "the rotation of the dancer kept time with the music"pirouette - (ballet) a rapid spin of the body (especially on the toes as in ballet)birling, logrolling - rotating a log rapidly in the water (as a competitive sport)
	3.	spin - a short drive in a car; "he took the new car for a spin"ride, drive - a journey in a vehicle (usually an automobile); "he took the family for a drive in his new car"
	4.	spin - rapid descent of an aircraft in a steep spiraltailspinaerobatics, stunt flying, stunting, acrobatics - the performance of stunts while in flight in an aircraft
	5.	spin - a distinctive interpretation (especially as used by politicians to sway public opinion); "the campaign put a favorable spin on the story"interpretation, rendering, rendition - the act of interpreting something as expressed in an artistic performance; "her rendition of Milton's verse was extraordinarily moving"
Verb	1.	spin - revolve quickly and repeatedly around one's own axis; "The dervishes whirl around and around without getting dizzy"spin around, gyrate, reel, whirlrevolve, rotate, go around - turn on or around an axis or a center; "The Earth revolves around the Sun"; "The lamb roast rotates on a spit over the fire"whirligig - whirl or spin like a whirligig
	2.	spin - stream in jets, of liquids; "The creek spun its course through the woods"centrifugate, centrifuge - rotate at very high speed in order to separate the liquids from the solidswell out, stream - flow freely and abundantly; "Tears streamed down her face"
	3.	spin - cause to spin; "spin a coin" birl, twirl, whirlcircumvolve, rotate - cause to turn on an axis or center; "Rotate the handle"
	4.	spin - make up a story; "spin a yarn"cook up, fabricate, invent, manufacture, make up - make up something artificial or untrue
	5.	spin - form a web by making a thread; "spiders spin a fine web"create from raw material, create from raw stuff - make from scratch
	6.	spin - work natural fibers into a thread; "spin silk"distort, twine, twist - form into a spiral shape; "The cord is all twisted"
	7.	spin - twist and turn so as to give an intended interpretation; "The President's spokesmen had to spin the story to make it less embarrassing"present, lay out, represent - bring forward and present to the mind; "We presented the arguments to him"; "We cannot represent this knowledge to our formal reason"sugarcoat - cause to appear more pleasant or appealing; "The mayor did not sugarcoat the reality of the tax cuts"
	8.	spin - prolong or extend; "spin out a visit"spin outprolong, protract, draw out, extend - lengthen in time; cause to be or last longer; "We prolonged our stay"; "She extended her visit by another day"; "The meeting was drawn out until midnight"

spin

verb1. revolve, turn, rotate, wheel, twist, reel, whirl, twirl, gyrate, pirouette, birl (Scot.) The Earth spins on its own axis.2. reel, swim, whirl, be giddy, be in a whirl, grow dizzy My head was spinning from the wine.3. tell, relate, recount, develop, invent, unfold, concoct, narrate She had spun a story that was too good to be true.noun1. bias, prejudice, slant, turn, leaning, bent, partiality, one-sidedness the wholly improper political spin given to the report2. (Informal) drive, ride, turn, hurl (Scot.), whirl, joy ride (informal) Think twice about going for a spin by the light of the silvery moon.3. revolution, roll, whirl, twist, gyration a spin of the roulette wheelflat spin (Informal) panic, state (informal), flap (informal), agitation, commotion, tizzy (informal), tiz-woz (informal) She was in a flat spin about the party.spin something out prolong, extend, lengthen, draw out, drag out, delay, amplify, pad out, protract, prolongate They will try to spin out the conference into next autumn.

spin

verb1. To make or become longer.Also used with out:draw out, elongate, extend, lengthen, prolong, prolongate, protract, stretch (out).Mathematics: produce.2. To rotate rapidly:swirl, twirl, whirl.3. To have the sensation of turning in circles:reel, swim, swirl, whirl.nounInformal. A trip in a motor vehicle:drive, ride, run.Informal: whirl.

Translations

打旋旋转疾驶纺纱

spin

(spin) – present participle ˈspinning: past tense, past participle spun (span) – verb1. to (cause to) go round and round rapidly. She spun round in surprise; He spun the revolving door round and round.旋转2. to form threads from (wool, cotton etc) by drawing out and twisting. The old woman was spinning (wool) in the corner of the room.纺纱 noun1. a whirling or turning motion. The patch of mud sent the car into a spin. （车轮）打旋 2. a ride, especially on wheels. After lunch we went for a spin in my new car. （乘车）疾驶 ˈspinner noun a person or thing that spins. 纺纱工或旋床工，旋转器 ˌspin-ˈdrier noun a machine which dries clothes by spinning them round and round and forcing the water out of them. 旋转式脱水机spin out to cause to last a long or longer time. He spun out his speech for an extra five minutes.拖延

spin

1. Physicsa. the intrinsic angular momentum of an elementary particle or atomic nucleus, as distinguished from any angular momentum resulting from its motion b. a quantum number determining values of this angular momentum in units of the Dirac constant, having integral or half-integral values. 2. a condition of loss of control of an aircraft or an intentional flight manoeuvre in which the aircraft performs a continuous spiral descent because the angle of maximum lift is less than the angle of incidence 3. (in skating) any of various movements involving spinning rapidly on the spot 4. Informal a short or fast drive, ride, etc., esp in a car, for pleasure 5. Commerce informal a sudden downward trend in prices, values, etc.

Spin (quantum mechanics)

The intrinsic angular momentum of a particle. It is that part of the angular momentum of a particle which exists even when the particle is at rest, as distinguished from the orbital angular momentum. The total angular momentum of a particle is the sum of its spin and its orbital angular momentum resulting from its translational motion. The general properties of angular momentum in quantum mechanics imply that spin is quantized in half integral multiples of ħ (=h/2π, where h is Planck's constant); orbital angular momentum is restricted to half even integral multiples of ħ. A particle is said to have spin &frac32;, meaning that its spin angular momentum is &frac32;. See Angular Momentum

A nucleus, atom, or molecule in a particular energy level, or a particular elementary particle, has a definite spin. The spin is an intrinsic or internal characteristic of a particle, along with its mass, charge, and isotopic spin. See Quantum mechanics, Symmetry laws (physics)

spin

1. A fundamental intrinsic property of elementary particles and atomic nuclei that describes the state of rotation of the particle or nucleus, i.e. its intrinsic angular momentum. 2. A quantum number that determines the values of this property and is either a whole or half integer. See also fermions; bosons.

Spin

the intrinsic angular momentum of an elementary particle. Spin is a quantized quantity. It is not connected with the motion of the particle as a whole. When the concept of spin was introduced, the electron was viewed as being like a rotating top. The electron’s spin was regarded as a quantity characterizing this rotation—hence the term “spin.”

The term “spin” is also applied to the intrinsic angular momentum of an atomic nucleus and, sometimes, of an atom. In this case, the spin is defined as the vector sum, calculated according to the rules of addition of momenta in quantum mechanics, of (1) the spins of the elementary particles forming the system and (2) the particles’ orbital angular momenta due to the particles’ motion inside the system.

Spin is measured in units of Planck’s constant ℏ and is equal to Jℏ, where J, called the spin quantum number or simply the spin, is a number characterizing each type of particle. The values of J can be 0, a positive integer, or a positive half integer. Accordingly, a particle is said to have integral or half-integral spin. For example, the electron, proton, neutron, neutrino, and the corresponding antiparticles have spin 1/2 in units of ℏ; the pions and kaons have spin 0; and the photon has spin 1. The intrinsic angular momentum of the photon, like that of the neutrino, cannot be measured, since there is no frame of reference in which the photon is at rest. Nevertheless, it is proven in quantum electrodynamics that the total angular momentum of a photon in an arbitrary frame of reference cannot be less than 1; this fact provides grounds for assigning a spin of 1 to the photon. That the neutrino has spin 1/2 follows, for example, from the law of conservation of angular momentum in the process of beta decay.

The projection of a spin on any fixed direction z in space can assume the values J, J – 1, . . ., –J. Thus, a particle of spin J has 2J + 1 spin states (for example, two states when J = 1/2). These spin states represent an additional, internal degree of freedom of the particle. According to quantum mechanics, the square of the spin vector is equal to ℏ²J(J + 1). Owing to its spin, a particle of nonzero rest mass has a spin magnetic moment µ = Ƴjℏ, where the factor 7 is the magnetomechanical ratio.

The concept of spin was introduced into physics in 1925 by G. Uhlenbeck and S. Goudsmit. On the basis of an analysis of spectroscopic data, the two scientists postulated that the electron has a spin angular momentum of ℏ/2 and an associated spin magnetic moment of one Bohr magneton ℏe/2mc, where e is the electron charge, m is the mass of the electron, and c is the speed of light. Thus, for the spin of the electron the ratio of the magnetic moment to the angular momentum is equal to Ƴ = elmc. From the standpoint of classical electrodynamics, this ratio is anomalous: for the orbital motion of the electron and for any motion of a classical system of charged particles with a given ratio elm, y is half as large, being equal to e/2mc.

By taking into account the spin of the electron, W. Pauli was able to formulate the exclusion principle, which asserts that an arbitrary physical system cannot contain two electrons in the same quantum state (seePAULI EXCLUSION PRINCIPLE). A number of effects can be explained by assuming that the electron has spin 1/2. Examples are the multiplet structure of atomic spectra (fine structure), the characteristics of the splitting of spectral lines in magnetic fields (the anomalous Zeeman effect), the order in which the electron shells are filled in multielectron atoms (and, consequently, the regularities of the periodic table), and the phenomenon of ferromagnetism.

On the basis of experimental data, the American physicist D. M. Dennison postulated that the proton has spin 1/2. The experimental verification of this hypothesis led to the discovery in 1929 of ortho-hydrogen and para-hydrogen. Somewhat earlier, Pauli had proposed that the hyperfine structure of atomic energy levels is determined by the interaction of the electrons with the nuclear spin. Pauli’s assumption was soon proved by E. Back and Goudsmit as a result of an analysis of the Zeeman effect in bismuth.

The spin of particles is connected with the nature of the statistics that the particles obey. As Pauli showed in 1940, it follows from quantum field theory that particles with integral spin are bosons (that is, they obey Bose-Einstein statistics) and particles with half-integral spin are fermions (that is, they obey Fermi-Dirac statistics). The Pauli exclusion principle holds for fermions, such as electrons, but not for bosons.

Spin was consistently incorporated into the mathematical apparatus of nonrelativistic quantum mechanics by Pauli. His description of spin was phenomenological in character. It follows directly from the relativistic Dirac equation that the electron has a spin and a spin magnetic moment. For an electron in an electromagnetic field, the Dirac equation in the limit of small velocities reduces to the Pauli equation for a nonrelativistic particle with spin 1/2.

The values of the spins of elementary particles determine the transformation properties of the fields that describe the particles. Under Lorentz transformations, the field corresponding to a particle with spin 0 is transformed as a scalar (or pseudoscalar), the field describing a particle with spin 1/2 is transformed as a spinor, the field for a particle with spin 1 is transformed as a vector (or pseudovector), and so on.

O. I. ZAV’IALOV

Spin

in aviation, a special, critical flight regime of an airplane or glider. In a spin, the aircraft descends in a steep spiral of small radius, simultaneously turning relative to all three of its axes, and enters autorotation.

Spins are classified as tailspins and inverted (outside) spins, depending on the pattern; as steep (50°–90°), banked (30°–50°), and flat (< 30°) spins, depending on the inclination of the longitudinal axis of the aircraft to the horizon; and as stable and oscillating spins, depending on the nature of the occurrence. The descent and entry of an aircraft into a spin occurs when the aircraft achieves a supercritical angle of attack (above the stalling angle). Antispin parachutes and rockets are used in flight testing to provide for escape from a stable spin that has already developed.

The first deliberate entry of an airplane into a spin was achieved by the Russian military aviator K. K. Artseulov in 1916. The problem of spins was studied in 1918 and 1919 by the British scientist H. Glauert. The theoretical basis of spins was elaborated by the Soviet scientist V. S. Pyshnov, and subsequent experimental studies were carried out by A. N. Zhuravchenko.

S. IA. MAKAROV

spin

[spin] (mechanics) Rotation of a body about its axis. (quantum mechanics) The intrinsic angular momentum of an elementary particle or nucleus, which exists even when the particle is at rest, as distinguished from orbital angular momentum.

spin

A condition in which an already stalled aircraft autorotates around a vertical axis, with a substantial loss of altitude in each 360° of turn. Autorotation takes place because of the differential lift being produced by the wings. There are varying degrees of yaw, pitch, and roll among aircraft. To recover, the normal action is to apply the opposite rudder (to stop the yawing and rolling action) and to push the stick forward (to unstall the aircraft). Once the speed is built up, the aircraft can be pulled out of the dive. In some aircraft, merely neutralizing the controls or just leaving them makes the aircraft recover from the spin. See flat spin and inverted spin.

spin

Equivalent to buzz. More common among C and Unixprogrammers.

spin

spin

spin

spin

spin

spin

spin

spin

spin

spin

spin

spin

Spin (quantum mechanics)

spin

Spin

Spin

spin

spin

spin

spin

spin

SPIN

Patient discussion about spin

Spin

Spin

SPIN

spin

Synonyms for spin

verb revolve

Synonyms

verb reel

Synonyms

verb tell

Synonyms

noun bias

Synonyms

noun drive

Synonyms

noun revolution

Synonyms

phrase flat spin

Synonyms

phrase spin something out

Synonyms

Synonyms for spin

verb to make or become longer

Synonyms

verb to rotate rapidly

Synonyms

verb to have the sensation of turning in circles

Synonyms

noun a trip in a motor vehicle

Synonyms

Synonyms for spin

noun a swift whirling motion (usually of a missile)

Related Words

noun the act of rotating rapidly

Synonyms

Related Words

noun a short drive in a car

Related Words

noun rapid descent of an aircraft in a steep spiral

Synonyms

Related Words

noun a distinctive interpretation (especially as used by politicians to sway public opinion)

Related Words

verb revolve quickly and repeatedly around one's own axis

Synonyms

Related Words

verb stream in jets, of liquids

Related Words

verb cause to spin

Synonyms

Related Words

verb make up a story

Related Words

verb form a web by making a thread

Related Words

verb work natural fibers into a thread

Related Words