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	Parallel motion - Wikipedia, the free encyclopedia
		The parallel motion was a mechanical linkage invented by the Scot James Watt in 1784 for his double-acting steam engine.
		He called it "parallel motion" because both the piston and the pump rod were required to move vertically, parallel to one another.
		Since the motion of the walking beam is constrained to a small angle, F describes only a short section of the figure-of-eight, which is quite close to a vertical straight line.
	en.wikipedia.org /wiki/Parallel_motion (405 words)

	Magnetosphere particle motion - Wikipedia, the free encyclopedia
		If the field curves or changes, the motion is modified, but the general character of spiraling around a central field line persists: hence the name "guiding center motion." Note in passing that because the magnetic force is perpendicular to the velocity, it performs no work and requires no energy--nor does it provide any.
		It may be noted that such motion was first derived by Henri Poincaré in 1895, for a charged particle in the field of a magnetic monopole, whose field lines are all straight and converge to a point.
		That motion was mentioned earlier in connection with the ring current.
	en.wikipedia.org /wiki/Magnetosphere_particle_motion (2076 words)

	Parallel Motion - LoveToKnow 1911
		PARALLEL MOTION, a form of link-work invented by James Watt, and used in steam-engines (see Steam-Engine, §; 88), to connect the head of the piston rod, moving up and down in a vertical path, with the end of the beam, moving in the arc of a circle.
		In the ordinary application of the parallel motion a point such as F is the point of attachment of the piston-rod, and P is used to drive a pump-rod.
		It was for long believed that the production of an exact straight-line motion by pure linkage was impossible, until the problem was solved by the invention of the Peaucellier cell.
	www.1911encyclopedia.org /Parallel_Motion (325 words)

	Principles of Part Writing
		Since these are the lowest intervals on the overtone series, when two or more voices move in parallel motion in these intervals, they can blur together and sound like only one voice (in the case of unisons, they actually become one voice).
		Parallel motion by thirds, fourths and sixths is acceptable and often desirable, however, two voices should not move in parallel motion for several beats in succession.
		Since parallel motion is to be avoided, avoiding motion of a voice all together eliminates that possibility altogether.
	www.smu.edu /totw/partwrit.htm (891 words)

	Parallel motion displacement transducers (US4503616)
		In a parallel motion finger probe, the parallel motion arm is rigidly connected to a shaft which is supported in a linear ball sleeve bearing, instead of by a parallel motion linkage as in prior finger probes.
		The parallel motion arm can be biassed in either of its two opposite directions of movement by a leaf spring, whose biassing force and direction can be adjusted by a control wheel having an eccentric groove co-operating with a pin on a spring control arm to which the spring is connected.
		Displacement of the parallel motion arm is sensed by an inductive displacement transducer of the LVDT type.
	www.delphion.com /details?pn10=US04503616 (297 words)

	Objectionable Motion
		Parallel perfect fourths are acceptable, but only in the upper three voices.
		Parallels by contrary motion occur when two voices move by contrary motion from one harmonic interval to the same harmonic interval.
		Parallel perfect octaves and parallel perfect fifths by contrary motion must not occur.
	www.tpub.com /harmony/6.htm (227 words)

	Motion Perception
		The eyes, head, and body are often in motion, and many of the most relevant objects in the environment are those that move (e.g., other organisms).
		A symmetrical spot is moved either parallel or perpendicular to the flanks of the receptive field of a neuron in primary visual cortex.
		At slow speeds the ratio of the thresholds for parallel and perpendicular masks were nearly 1.0, but above a critical speed of 10-12 spot-widths/sec the thresholds were greater for the parallel mask.
	www.cps.utexas.edu /Research/Geisler/Projects/motionperception.html (410 words)

	Guiding center - Wikipedia, the free encyclopedia
		In many cases of practical interest, the motion in a magnetic field of an electrically charged particle (such as an electron or ion in a plasma) can be treated as the superposition of a relatively fast circular motion around a point called the guiding center and a relatively slow drift of this point.
		If the magnetic field is uniform, the particle velocity is perpendicular to the field, and other forces and fields are absent, then the magnetic Lorentz force is perpendicular to both the velocity and the magnetic field and is constant in magnitude, resulting in particle motion at constant speed on a circular path.
		Once the particle is moving in the drift direction, the magnetic field deflects it back against the external force, so that the average acceleration in the direction of the force is zero.
	en.wikipedia.org /wiki/Guiding_center (1235 words)

	[No title]
		Alternating transverse motions (perpendicular to the direction of propagation, and the ray path); commonly approximately polarized such that particle motion is in vertical or horizontal planes.
		Motion is both in the direction of propagation and perpendicular (in a vertical plane), and “phased” so that the motion is generally elliptical – either prograde or retrograde.
		The first shear wave motion (illustrated in the particle motion diagram in the lower left of Figure 9) is arriving from down and to the south (diagonally from the lower left in the particle motion diagram).
	web.ics.purdue.edu /~braile/edumod/waves/WaveDemo.htm (4491 words)

	Visual decomposition of radial and parallel motion flow (Site not responding. Last check: 2007-11-05)
		It was thus of interest whether one motion is prioritized over the other, whether the parallel/radial motion interaction is speed dependent and whether it is influenced by the presence of acceleration in the radial flow.
		We believe that these results provide further evidence for a purely visual compensation for the image motion produced by oculomotor pursuit: there is an asymmetrical interaction between the radial and parallel components of the retinal motion flow which preserves the integrity of the former and minimizes the influence of the latter.
		In addition, the suppression of the parallel flow is optimal under the same conditions, which support heading accuracy in the presence of simulated eye movements.
	www.bu.edu /bravi/meetings/OFBeyond/vongrunau_OFBeyond_abstract.html (608 words)

	Solar time - Wikipedia, the free encyclopedia
		First, Earth's orbit is an ellipse, not a circle, so the Earth moves faster when it is nearest the Sun (perihelion) and slower when it is farthest from the Sun (aphelion) (see Kepler's laws of planetary motion).
		Second, due to Earth's axial tilt, the Sun moves along a great circle (the ecliptic) that is tilted to Earth's celestial equator.
		Babylonian astronomers knew of the equation of time and were correcting for it as well as the different rotation rate of stars, sidereal time, to obtain a mean solar time much more accurate than their water clocks.
	en.wikipedia.org /wiki/Solar_time (705 words)

	parallel fifths..... - Future Producers
		Parallel motion - the two voices move in the same direction by the same interval..
		Parallel motion is when two voices (vertical on the staff) form a given interval in relation to each other (eg a 5th), then move to the same interval (a 5th) in a different pitch.
		Parallel motion refers to one vertical interval (CG) to another (FC) and has nothing to do with horizontal (eg C to F).
	www.futureproducers.com /forums/showthread.php?postid=47025019 (551 words)

	Harmony - Guide to Proper Voice Leading
		Other intervalic parallel motion such as 3rds or 2nds, etc. was considered okay.
		The reason that parallel motion wasn't cool is simple, the separate notes in the moving chords should move around in different directions or at least not the exact same distances to create a sense of melody inside the harmony or at least to create some musical interest.
		As we will find out later, sometimes parallel motion can be used very effectively to lead chords together, but for now let's concentrate on the more traditional form of voice leading.
	chrisjuergensen.com.hosting.domaindirect.com /voiceleading.htm (1324 words)

	Counterpoint Explained: Contrapuntal Motion \| Lessons @ Ultimate-Guitar.Com
		Parallel motion is when 2 parts move the same interval in the same direction simultaneously.
		Similar motion is when 2 parts move in the same direction simultaneously while compensating for the key.
		Oblique motion is used quite often in church music (based on the church music I look at on Sundays), not for a long amount of time but just short passages, maybe a measure or so.
	www.ultimate-guitar.com /lessons/guitar_techniques/counterpoint_explained_contrapuntal_motion.html (980 words)

	steliaros.com - Research
		While a motion vector per block representation would normally be very expensive to transmit, a motion vector redundancy coding (MVRC) scheme has proved ideally suited to producing compact descriptions of MV structures exhibiting high spatial redundancy.
		Parallel implementations on relatively coarse and fine grain distributed systems and more tightly coupled shared memory machines will be investigated.
		The frame-based VSBM techniques are further extended to address the problem of motion compensation and motion vector coding, in an object-based video coding framework, where the video scene is composed of a collection of arbitrary shaped objects.
	homepage.ntlworld.com /michael.steliaros/research (1195 words)

	Parallel fifth - Parallelfifth
		In music, consecutive fifths (also known as parallel fifths) involve two or more fifths (between two voices) which follow one another in parallel motion.
		Partially due to the overtone series, this individuality between two parts may temporarily be lost when two voices a fifth apart move in parallel motion.
		Diminished fifths moving in parallel motion were also disapproved.
	www.kopete.org /Parallel-fifth.html (511 words)

	parallel - Definitions from Dictionary.com
		an imaginary circle on the earth's surface formed by the intersection of a plane parallel to the plane of the equator, bearing east and west and designated in degrees of latitude north or south of the equator along the arc of any meridian.
		C minor is the parallel minor scale of C major.
		The condition of being parallel; near similarity or exact agreement in particulars; parallelism.
	dictionary.reference.com /search?q=parallel (775 words)

	PARALLEL MOTION
		(a) (Mach.) A jointed system of links, rods, or bars, by which the motion of a reciprocating piece, as a piston rod, may be guided, either approximately or exactly in a straight line.
		A short excerpt featuring parallel motion and unisons performed on piano.
		Translations for "parallel motion"; alternative meanings/domain in parentheses.
	www.websters-online-dictionary.com /definition/english/Pa/Parallel+motion.html (270 words)

	Magnum Grippers, parallel grippers for tough environments
		The magnum parallel gripper mechanism is double sealed to assure that the mechanism is isolated from the environment.
		Any debris that attempts to make its way under the parallel gripper slide bearings is cleared away by the pressure at the purge port.
		All materials of the MAGNUM parallel gripper are designed to eliminate maintenance and assure that the gripper functions in harsh environments.
	www.grippers.com /magnum.htm (399 words)

	Randomized Parallel Motion Planning for Robot Manipulators - RESY-Publications
		We have presented a novel approach to parallel motion planning for robot manipulators in 3D workspaces.
		The approach is based on arandomized parallel search algorithm and focuses on solving the path planning problem for industrial robot arms working in a reasonably cluttered workspace.
		The parallel search is conducted by a number of rule-based sequential search processes, which work to find a path connecting the initial con guration to the goal via a number of randomly generated subgoal con gurations.
	ai3.inf.uni-bayreuth.de /resypub/?mode=pub_show&pub_ref=qin1996a (195 words)

	Parallel motion
		Parallel motion is one of the topics in focus at Global Oneness.
		Once nudged between a boulder and fulcrum it is constrained to a particular motion, to act as a lever to move the boulder.
		The most common linkages have one degree of freedom, meaning that there is one input motion that produces one output motion.
	www.experiencefestival.com /parallel_motion (713 words)

	Voronoi diagrams and algorithmic motion planning: Parallel and randomized techniques
		The central theme of this dissertation is the effective use of parallel and randomized algorithmic techniques to obtain efficient performance bounds for planar motion planning instances.
		We present an optimal randomized parallel algorithm for constructing the Voronoi diagram of a set of line segments in the plane.
		In particular, we obtain an optimal randomized parallel algorithm for the retraction method of finding a path of motion for an object with two dofs moving in the plane.
	repository.upenn.edu /dissertations/AAI9521106 (411 words)

	Low Interval Limits
		Oblique motion is indirect motion that occurs when one part moves and another sustains or repeats.
		Similar motion is direct motion that occurs when two parts move in the same direction producing different harmonic intervals.
		Parallel motion is direct motion that occurs when two parts move in the same direction producing the same harmonic interval, without regard for quality; a major third to a minor third is parallel motion.
	www.tpub.com /harmony/5.htm (216 words)

	Work table for open-arm sewing machines - Patent 4168671
		It is preferable that the supporting leg be part of a crank mechanism for easily and conveniently raising and lowering the secondary table top through the relatively short swinging stroke of the parallel motion mechanism made possible by the invention.
		As is usual, the forward links 13a of the parallel motion mechanism are formed as respectively opposite ends of a unitary linkage bar that is journaled to the underside of base table top 10 by bearing brackets 15, FIG.
		This is in contrast to the usual arrangement, in which it is necessary to swing the secondary table top through a relatively long stroke of the parallel motion mechanism from one side of dead center to the opposite side thereof.
	www.freepatentsonline.com /4168671.html (1736 words)

	Gears (Site not responding. Last check: 2007-11-05)
		They are used to transmit rotary motion between parallel shafts and the shafts rotate in opposite directions.
		They are used to transmit rotary motion between parallel shafts but the shafts rotate in the same direction with this arrangement.
		Helical gears used to transmit power between parallel shafts are called parallel helical gears and the ones used to transmit power between non-parallel shafts are called crossed helical gears.
	www.engineering.com /content/ContentDisplay?contentId=41005005 (581 words)

	(sc1.htm) (Site not responding. Last check: 2007-11-05)
		This feature of the diatonic scale along with the fundamental sonority of imperfect intervals make motion in parallel 3rds, 6ths and 10ths the least problematic first species progression.
		Parallel motion should predominate in the middle of the exercise.
		Contrary motion is counterpoint's most useful tool since it promotes the independence of the two voices.
	www.duke.edu /web/mus118/sp1.htm (650 words)

	[No title]
		Pilot is a single-axis, single chip family of motion processors that provides brushed, brushless, pulse and direction and microstepping motion control.
		The Parallel Pilot is ideal for embedded systems in industrial, semiconductor, medical, scientific and robotic applications.
		Performance Motion Devices, Inc. (PMD), located in Lincoln, MA, is a global leader in the development and advancement of chip-based motion control technology.
	www.pmdcorp.com /news/press.cfm?ART=3 (186 words)

	Design of a Watt I Parallel Motion Generator
		The objectives of this module are to systematically introduce the graphical construction which transforms a four-bar path generator into a Watt I six-bar parallel motion generator.
		The Watt I six-bar linkage is the only six-bar linkage that is capable of non-trivial exact parallel motion generation.
		The Watt I parallel motion generator (PMG) can be constructed geometrically by starting with any two of the three four-bar linkages.
	www.mines.edu /fs_home/dgolson/mce302-4.html (491 words)

	Parallel Motion Estimation Techniques for Noisy Image sequences
		The aim of this project is to provide a realistic route to improved motion estimation for moving picture compression by utilising the increasing power of parallel processing.
		An existing optical flow technique will be improved, so that it can be used to generate unambiguous areas of uniform motion within an image sequence; this technique is computationally intensive, but is amenable to parallel implementation.
		Parallel implementation strategies will be considered at several stages of algorithm development.
	www.dcs.warwick.ac.uk /research/mcg/projects/GRJ79997.html (196 words)

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