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Topic: Particle displacement

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	NationMaster - Encyclopedia: Particle (Site not responding. Last check: 2007-10-22)
		Particle displacement or particle amplitude Î¾ is a distance measurement in m (metre) of the movement of a particle(real or imagined) in a medium as it transmits a wave.
		Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them.
		Particles belong to the function word class because their function consists of defining the grammatical meaning in a sentence rather than the lexical meaning of each individual word that may be looked up in a dictionary.
	www.nationmaster.com /encyclopedia/Particle (716 words)

	Particle displacement - Wikipedia, the free encyclopedia
		Particle displacement or particle amplitude (represented in mathematics by the lower-case Greek letter ξ) is a measurement of distance (in metres) of the movement of a particle in a medium as it transmits a wave.
		In most cases this is a longitudinal wave of pressure (such as sound), but it can also be a transverse wave, such as the vibration of a taut string.
		Particle displacement can be represented in terms of other measurements:
	en.wikipedia.org /wiki/Particle_displacement (123 words)

	Displacement - Wikipedia, the free encyclopedia
		Displacement (vector), in Newtonian mechanics, specifies the position of a point or a particle in reference to an origin or to a previous position
		Displacement (fencing), a movement that avoids or dodges an attack
		Displacement hull, where the moving hull's weight is supported by buoyancy alone and it must displace water from its path rather than planing on the water's surface
	en.wikipedia.org /wiki/Displacement (213 words)

	Physics 211 - Warm-Up Exercises (Site not responding. Last check: 2007-10-22)
		Displacement is not concerned with the path (distance) but with where the object started to where it ended up; it is the closest point from 2 points which is the straight line displacement.
		Displacement is the movement of the particle from Point A to Point B. Thus, the distance traveled must be at least equal to displacement.
		No, the magnitude of a particle's displacement cannot ever be greater than the distance traveled because the magnitude is a direct measurement from the starting point to the ending point, however, a particle may stray away from that straight line, increasing the actual distance traveled.
	www.usd.edu /phys/courses/phys211/warmup/past2.html (2557 words)

	Ch 10 (Site not responding. Last check: 2007-10-22)
		The displacement of the particles of the medium (the coiled spring) caused by the pulse is perpendicular to the direction in which the pulse travels.
		A longitudinal wave is one in which the displacement of particles of the medium is parallel to the direction of propagation of the wave.
		The resultant displacement of that particle at that instant is the difference of the two separate displacements and is in the direction of the larger (superposition principle).
	cougar.slvhs.slv.k12.ca.us /~pboomer/physicstextbook/ch10.html (6289 words)

	Sound Basics (Site not responding. Last check: 2007-10-22)
		The passage of a sound wave passing through a gas medium produces a displacement of the particles or molecules of gas from their normal positions, i.e.
		The particle displacement of the medium through which the sound waves of speech and music pass is a very small fraction of a millimetre.
		The amplitude or displacement of the particle from its position in the absence of a sound wave is given by
	www.avatar.com.au /courses/PPofM/sound/sound7.html (341 words)

	NationMaster - Encyclopedia: Displacement (Site not responding. Last check: 2007-10-22)
		A displacement hull is the type of hull used by large ocean-going vessels and sailboats.
		Particle displacement or particle amplitude (represented in mathematics by the lower-case Greek letter Î¾;) is a measurement of distance (in metres) of the movement of a particle in a medium as it transmits a wave.
		Displacement is equal to the volume of combustible air/fuel mixture ingested during one cycle of all the cylinders at 100% volumetric efficiency.
	www.nationmaster.com /encyclopedia/Displacement (746 words)

	Particle - Wikipedia, the free encyclopedia
		Elementary particle, in particle physics, a particle of which larger particles are composed (see also list of particles)
		Particle displacement, in wave physics, a measurement of distance of the movement of a particle in a medium as it transmits a wave
		Sound particle velocity, in acoustics, the velocity of a particle a medium as it transmits a wave
	en.wikipedia.org /wiki/Particle (193 words)

	particle detector - Hutchinson encyclopedia article about particle detector (Site not responding. Last check: 2007-10-22)
		One of a number of instruments designed to detect subatomic particles and track their paths; they include the cloud chamber, bubble chamber, spark chamber, and multiwire chamber.
		The earliest particle detector was the cloud chamber, which contains a super-saturated vapour in which particles leave a trail of droplets, in much the same way that a jet aircraft leaves a trail of vapour in the sky.
		As a particle passes through the chamber, it produces an electrical signal in the wires.
	encyclopedia.farlex.com /Particle+detector (253 words)

	Theremin Vox - Particle velocity
		Particle velocity is the velocity of a particle(real or imagined) in a medium as it transmits a wave.
		When applied to a sound wave through a medium of air, particle velocity would be the physical speed of an air molecule as it moves back and forth in the direction the sound wave is travelling as it passes.
		Particle velocity should not be confused with the speed of the wave as it passes through the medium, i.e.
	www.thereminvox.com /article/articleprint/164/-1/37 (169 words)

	Particle displacement (Site not responding. Last check: 2007-10-22)
		Particle displacement or particle amplitude ξ in m is:
		Particle amplitude or particle displacement is a very sound field value.
		Particle image velocimetry for the surface tension driven convection experiment using a particle displacement tracking technique (SuDoc NAS 1.15:104482)
	www.freeglossary.com /Particle_amplitude (186 words)

	LaSIE (Site not responding. Last check: 2007-10-22)
		In these applications, the lateral force in the laser trap balanced with the force of these biomolecules was measured as the lateral displacement of the particle from the initial equilibrium position.
		is the spring constant of laser trap and Δz is the displacement of the particle due to an external force.
		The particle held by LT in evanescent field generated around the vicinity of the substrate scatters the light of the field.
	lasie.ap.eng.osaka-u.ac.jp /res_trap.html (666 words)

	Flow Visualization
		Thus, two parameters, particle displacement between the two acquired images and the time interval between the moments when each image is acquired, are used to determine particle velocity, its displacement distance divided by its displacement time.
		Vorticity is the measure of particle rotation in a flow field, or degree of swirling.
		The vectors denote the particles’ displacements from image A to their respective locations in image B. This image is then analyzed using TECPLOT, another processing software package, and produces a colorful image with vectors, which shows both particle displacement and speed.
	www.vu.union.edu /~lupinog/fall1999.html (3765 words)

	California Geological Survey - Earthquakes - Displacement Particle Motions, Parkfield Earthquake of 28 Sep 2004 (Site not responding. Last check: 2007-10-22)
		Map of horizontal displacement particle motions in the M6.0 Parkfield, CA earthquake of 28 Sep 2004 (8.5 x 11").
		To illustrate the horizontal ground displacement at selected strong motion station locations in the Parkfield, CA area as a result of the 28 Sep 2004 earthquake.
		Ground motions were measured as north-south and east-west components and combined to show how a particle at a given location would move in two dimensions as a result of the earthquake.
	gis.ca.gov /catalog/BrowseRecord.epl?id=29302 (186 words)

	Week12-1.doc - Title
		Problem 11-1: The displacement of an object undergoing simple harmonic motion is given by the equationx(t) = 3.00 sin(8t + /4) where x is in meters, t is in seconds and the argument of the sine function is in radians.
		Viewed edge-on (i.e., projected along a diameter) the motion of a particle moving uniformly with angular speed in a circle of radius A is indistinguishable from a particle oscillating harmonically in one dimension with amplitude A and angular frequency.
		The object is displaced 20 cm and given an initial velocity of 3 m/s away from the equilibrium position.
	www.physics.csbsju.edu /RPEG/rtf/Lesson.11.A.html (2937 words)

	Sound pressure - Wikipedia, the free encyclopedia
		The effective sound pressure is the root mean square of the instantaneous sound pressure over a given interval of time.
		In a sound wave, the complementary variable to sound pressure is the acoustic particle velocity.
		For small amplitudes, sound pressure and particle velocity are linearly related and their ratio is the acoustic_impedance.
	en.wikipedia.org /wiki/Sound_pressure (850 words)

	Engine Research Center
		Small particles are added to the flow at a sufficient density to fill the field, and two images, separated by a known time, are acquired.
		The local velocity is determined by interrogating a small portion of the image to determine the particle displacement between exposures.
		Tracking of individual particles would be computationally very difficult as well, since individual particles may move in and out of the light sheet between the two laser pulses, and also since the particles look very similar to each other when viewed individually.
	www.erc.wisc.edu /advanced_diagnostics/tutorials/optical_diagnostics_tutorial_piv.html (623 words)

	Dantec. Principles of Particle Image Velocimetry (Site not responding. Last check: 2007-10-22)
		Particle Image Velocimetry (PIV) is a whole-flow-field technique providing instantaneous velocity vector measurements in a cross-section of a flow.
		Any particle that follows the flow satisfactorily and scatters enough light to be captured by the CCD camera can be used.
		The number of particles in the flow is of some importance in obtaining a good signal peak in the cross-correlation.
	www.dantecdynamics.com /PIV/Princip/Index.html (639 words)

	Sound - Wikipedia, the free encyclopedia
		Particles in the medium are displaced by the wave and oscillate.
		In conventional use and in scientific literature sound velocity v is the same as sound speed c.
		Sound velocity c or velocity of sound should not be confused with sound particle velocity v, which is the velocity of the individual particles.
	en.wikipedia.org /wiki/Sound (752 words)

	Winter2000, Final Report
		Thus, two parameters, particle displacement between the two acquired images and the time interval between the moments when each image is acquired, are used to determine particle velocity, displacement distance divided by displacement time.
		The vectors denote the particles’ displacements from image A to their respective locations in image B. The system accomplishes this by identifying similar regions between the pair of images and then generating a set of vectors between these two similar areas.
		Data from the particles under the airfoil was not acquired due to the geometry of the laser and camera.
	www.vu.union.edu /~lupinog/WR.html (6734 words)

	Re: Particle displacement
		: displacement is proportional to the displacement of the
		The particle displacements at mode conversion are a function of the incident angle as you suggest.
		I would suspect that the : : displacement is proportional to the displacement of the : : transducer but it should be more difficult to cause cause : : displacement in solids than liquids.
	www.ndt.net /wshop/forum/messages-1/684.htm (380 words)

	21003: ASandT Vol 36 No 5 (Site not responding. Last check: 2007-10-22)
		Particle beams have traditionally been produced by supersonic expansion of a particle-laden gas through a single-nozzle to vacuum.
		However, real particles may either experience a displacement toward the axis of symmetry or may impact on the front surface of the lens.
		It is found that the maximum particle displacement occurs at a particle Stokes number, St, near unity and significant impact loss also begins at St@1.
	www.aaar.org /ast_abst/v36n21003.htm (337 words)

	Trial Moves
		The most common trial move in continuous-space MC is a particle displacement.
		This means that probability of suggesting a move that displaces a particle, going from a state
		If, which it will be 80% of the time, we execute a displacement of a randomly chosen molecule; otherwise, we execute a rotation of a randomly chosen molecule.
	www.pages.drexel.edu /~cfa22/msim/node26.html (528 words)

	Modern Physics:Symmetry and Quantum Mechanics - Wikibooks, collection of open-content textbooks
		In the language of physics, if there is nothing that gives the particle a higher probability of being at one point rather than another, then the probability is independent of position and the system is invariant under displacement in the direction.
		The wave function is thus technically not invariant under displacement, in that the displaced wave function is multiplied by the factor exp(ikd).
		The impossibility of writing the displaced wavefunction as the original multiplied by a phase factor lends plausibility to the assertion that a single complex exponential is the only possible form of the wave function that is invariant under displacement.
	en.wikibooks.org /wiki/Modern_Physics:Symmetry_and_Quantum_Mechanics (1379 words)

	Definition of particle accelerator
		1:...ors, [[quadrupole magnet]]s are used to focus the particles into a beam and prevent their mutual electrostat...
		This particle is usually known as a [[positron]] and has an ele...
		The action of the moving [[ioncharged particles]] is taken into account by integrating the conve...
	www.wordiq.com /search/particle+accelerator.html (727 words)

	Elastic Properties of Solids
		Each individual particle is influenced by the motion of its nearest neighbor and both inertial and elastic restoring forces act upon each particle.
		Please note that the spring is applying a force to the particle that is equal and opposite to the force pulling down on the particle.
		The mass of the particles is related to the density of the material, and the spring constant is related to the elastic constants of a material.
	www.ndt-ed.org /EducationResources/CommunityCollege/Ultrasonics/Physics/elasticsolids.htm (977 words)

	NASA GRC Optical Technology & NDE Branch - PIV Background Page
		The positions of the particles are recorded on either photographic film or digital CCD cameras at each instant the light sheet is pulsed.
		The data processing consists of either determining the average displacement of the particles over a small interrogation region in the image or the individual particle displacements between pulses of the light sheet.
		The positions of particles entrained in the flow is recorded by a CCD camera, which is oriented 90 degrees to the plane of the light sheet.
	www.grc.nasa.gov /WWW/OptInstr/Wernet_Web/pivbkgrd.html (623 words)

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