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Topic: Deflection

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	Asteroid deflection strategies - Wikipedia, the free encyclopedia
		Providing this was done well enough in advance, a small deflection from any number of nuclear blasts could be enough to alter the objects trajectory enough to avoid an Earth impact.
		Researcher Jay Melosh has proposed that it may be possible to deflect the orbit of an asteroid or comet enough by focusing solar energy onto its surface to create thrust from the resulting vaporisation of material, or to amplify the Yarkovsky effect.
		Over a span of months or years enough Solar radiation can be directed onto the object to deflect it so long as its Albedo is low enough not to reflect all the light away.
	en.wikipedia.org /wiki/Asteroid_deflection_strategies (876 words)

	Road & Transport Research: Pavement deflection testing can improve local road maintenance activities
		Deflection testing is a non-destructive method of assessing the structural adequacy of a pavement.
		Deflections are measured electronically and recorded on a computer located in the front cabin of the truck.
		A deflection ratio of greater than 0.8 would indicate a bound or rigid pavement, a ratio of between 0.6 and 0.7 would be expected for a good quality unbound pavement and a ratio of less than 0.6 would indicate a possible weakness in the pavement.
	www.findarticles.com /p/articles/mi_qa3927/is_200012/ai_n8912482 (1173 words)

	NASA NEO News: Deflection Scenarios for Apophis \| SpaceRef - Your Space Reference
		The DeltaV needed is too large to use deflection by impact, and the amount of time available probably is not sufficient for the preparation and execution of one of the methods of gradual deflection, unless there is a considerable improvement in technology.
		First, the large value of the escape velocity relative to the deflection velocity means that, if the asteroid disperses, the fragments will scatter by a large amount around their center of mass, which is deflected by the same amount whether or not dispersal occurs.
		If Apophis is deflected before 2029, the amount of deflection needed to prevent an Earth impact in 2036 or one of the nearby years is so small that it can be accomplished merely by hitting the asteroid with a spacecraft, provided that the influence of the Yarkovsky effect on Apophis can be approximately determined.
	www.spaceref.com /news/viewsr.html?pid=17666 (4999 words)

	Lecture 40
		A general rule for limiting deflection of simple spans for floor construction, or for plastered ceilings, is that the deflection should not exceed the span (in inches) divided by 360 (max D= L/360).
		The deflection for exposed ceiling beams at the roof is often allowed to be 50% to 100% greater (l/240 or l/180).
		Most mistakes in computing deflections are caused by using the length in feet instead of inches and/or using "w" to mean pounds per foot instead of pounds per inch.
	darkwing.uoregon.edu /~struct/courseware/461/461_lectures/461_lecture40/461_lecture40.html (587 words)

	BeamDeflect
		For example, beams that carry plaster ceilings are generally limited to a deflection of 1/360 of their length.
		In some designs the amount of beam deflection is a feature, such as a snap arm on a plastic component.
		The deflection of a beam depends upon the stiffness of the material and the dimensions of the beam as well as upon the applied loads and supports.
	www.wit.edu /academics/csm/rourke/strengths/BeamDeflect.html (302 words)

	Opalmine.com: Opal Encyclopedia, How Opals Glow Colour (Site not responding. Last check: 2007-10-22)
		Light passes through the transparent spheres in a direct line, but when it hits the 'bath' of silica, it is bent and deflected at different angles, thus producing a rainbow effect.
		Depending on the size of the spheres, varying colours of the spectrum are diffracted.
		So it is a combination of deflection (bending) and diffraction (breaking up) of light rays that creates the colour in opal.
	www.opalmine.com /opals-encyclopedia-2.php (559 words)

	Electrostatic Deflection
		Thus, when electron 1 reaches the area of the deflection plates, it is attracted to the right plate while being repelled from the left plate.
		This sweeping action, or scanning, is performed by rapidly varying the voltage potential on the deflection plates as the electron stream passes.
		The upward deflection of electron 4 is increased by the negative-going sine wave (at time 4) applied to the bottom deflection plate.
	www.tpub.com /neets/book6/21f.htm (1535 words)

	HR detector.txt (Site not responding. Last check: 2007-10-22)
		Target deflection as a function of the scattered electron direction where electrons excite the singlet 2S metastable state of a Helium target and where the initial velocity is 1800 m/s.
		Deflected target momentum and velocity as a function of the scattered electron direction where electrons excite the singlet 2S metastable state of a Helium target and where the initial velocity is 1800 m/s.
		Target deflection as a function of the deflected target momentum and velocity where electrons excite the singlet 2S metastable state of a Helium target and where the initial velocity is 1800 m/s.
	es1.ph.man.ac.uk /AJM2/Laser/deflection/deflection.htm (4524 words)

	Road & Transport Research: Pavement deflection testing and evaluation by back analysis: Time for a reality check?
		Several experiences with pavement deflection assessments compared with conventional material sampling and in-situ testing have revealed wide discrepancies between the results of deflection back-analyses, properties measured in the field and laboratory, and observed performance.
		The deflection test in its various forms (Benkleman beam (BB), falling weight deflectometer (FWD) and automated self-contained trucks (PAVDEF)) is the primary technique adopted by road authorities in Australia (and probably elsewhere) for assessing pavement structural response.
		The widespread reliance on deflection testing to assess pavement performance has prompted this call for a 'reality check', and for practitioners to carefully consider their confidence in deflection tests when used in isolation.
	www.findarticles.com /p/articles/mi_qa3927/is_200409/ai_n9452191 (1451 words)

	The effect of speed on English deflection (squirt) - Forums powered by UBB.threads™ (Site not responding. Last check: 2007-10-22)
		Deflection (squirt) at high speed was about 3 times larger than deflection at low speeds.
		The deflection at low speed is small, but it is not zero.
		Practically speaking though, slow speed side-English shots would typically only be used for fairly short shots where deflection would not be of much concern (especially compared to English throw, which could be a major concern).
	www.billiardsdigest.com /ccboard/showthreaded.php?Cat=&Board=ccb&Number=168242&page=0&view=collapsed&sb=5&o=&fpart=1 (1129 words)

	NMS ISDN Supplementary Services Developer's Reference Manual (6502-21): Call deflection
		Call deflection is a service that is only applicable to user/network type interfaces such as ETS 300, and not to peer-to-peer interfaces such as Q.SIG.
		If call deflection is successfully invoked for the call, the stack returns an ACU indication message to the stack, containing an acu_ss_deflect_ret_result extended data structure.
		If call deflection is not successfully invoked for the call, the stack returns an ACU indication message to the application, containing an acu_ss_deflect_ret_error extended data structure.
	www.nmscommunications.com /manuals/6502-21/call_deflection.html (1207 words)

	STMicroelectronics Unveils the World’s First Vertical Deflection Booster for Slim CRT Displays
		In Slim CRT displays, very high output currents are needed to drive the coil, as the beam swings over wider deflection angles, compared to conventional CRTs.
		The new vertical deflection booster utilizes STґs proprietary architecture based on ‘external flyback,’ which decreases the supply voltage - and thus reduces the dissipation rate in the IC - with no impact on the flyback voltage.
		Alongside traditional linear amplifiers (Class AB), ST also develops and markets a family of vertical deflection boosters with the advanced “Class D” mode of operation (based on Pulse Width Modulation).
	www.physorg.com /news3366.html (519 words)

	Tile Deflection
		However, the basic rule is that if the finished tile surface span deflects more than the calculated maximum deflection amount, the tiled surface will shear, buckle, and fail.
		For ceramic tile the maximum allowable deflection is calculated at L/360.
		Some ods are designed to increase the resistance of the surface to deflection especially when dealing with floor surfaces.
	www.thetiledoctor.com /installations/deflection.cfm (596 words)

	6.3 Deflection Example Problems (Site not responding. Last check: 2007-10-22)
		Given: The rectangular beam, built in at the left end, having length, L, and cross-section of width, b, and height, h, is acted upon by a point load, P, at its free end.
		Since the sign of v(L) is negative, the deflection is downward.
		From the symmetry of the beam we know the maximum deflection is at x = L/2 = 25 in.
	www.engineering.ucsb.edu /~me15web/6_beams/ex_6-3.htm (185 words)

	Wavelength Converters for Deflection Routing Networks (Site not responding. Last check: 2007-10-22)
		Deflection routing may become an appealing routing principle in the metropolitan area because of the increasing gap between the WDM transmission capacities and the processing power available in the nodes.
		Deflection routing is fast, simple, naturally copes with local transient or permanent congestion states and may easily be tailored for service differentiation.
		Deflection routing however suffers from a limited throughput and relatively large delay jitters as compared to the classical store-and-forward approach, especially if the traffic is uniform and uniformly distributed.
	csdl2.computer.org /persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/proceedings/iscc/2000/0722/00/0722toc.xml&DOI=10.1109/ISCC.2000.860630 (193 words)

	Hue-balls and Deflection Mapping
		The coordinates of the output vector in the eigenvector basis are the input vector's coordinates, scaled by the corresponding eigenvalues.
		Equation 11 indicates that the vector is always deflected towards the principal eigenvector, since the coordinate of the input vector in the principal eigenvector direction will by definition grow proportionally larger than the components along the other eigenvectors.
		Based on the discussion in Section 3.3.1 about the relationship between anisotropy and deflection, we have also explored assigning opacity based on the amount of deflection.
	www.cs.utah.edu /~gk/papers/tvcg00/node6.html (855 words)

	pcb board deflection when mounting component
		That is when the nozzle place the chip on the pcb, the board will have some deflection.
		It has been my experience that when all conditions are as they are supposed to be there should be zero or very little deflection.
		As far as deflection when in the pick and place equipment, I like to set it up with about 0.005"-0.020" max.
	www.smtnet.com /Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=5634& (589 words)

	Rinard Fork Deflection Test
		A fork with lots of deflection is flexible, and can feel squirrelly or soft for heavier riders, but may be perfectly matched for lighter riders or riders who want a little more comfort.
		For the Lateral (side-to-side) deflection numbers, the hub axle was vertical and deflection was measured with a dial indicator in the direction of loading.
		For Longitudinal (in line with the direction of the bicycle's travel) deflection, the hub axle was horizontal and the fork blades curved toward the ground.
	www.sheldonbrown.com /rinard/rinard_forktest.html (1136 words)

	Deflection
		Deflection had always been clearly understood to mean cue ball deflection.
		Whether through misinformation or as a result of not educating the new generation of pool players, deflection has now become falsely understood to mean the deflection of the cue shaft away from the cue ball as it strikes it or even the flexibility of the cue shaft itself.
		To reduce deflection to its absolute minimum by carrying the shock wave from the tip down the shaft through the flexible joint and out the butt of the cue, thus allowing the chalk particles to stay in contact with the cue ball surface for a longer duration of time.
	www.meuccicues.com /deflection.htm (791 words)

	Constant Load/Deflection Tests
		For determination of deflections on specimens stressed to high percentages of the engineering yield strength (i.e., beyond the yield point of the material), it is common to utilize a strain gauged calibration specimen.
		In some cases, constant deflection specimens such as bent beams and C rings are not as severe as dead weight-loaded specimens.
		U-bend specimens are constant deflection specimens hut are normally not stressed to various levels of deflections or load.
	www.corrosionsource.com /handbook/testing/cld.htm (779 words)

	Dr. Gruenwald Steel Structures LECTURE
		Deflection of Steel Beams with bending stress of 24 ksi Graph figure 9.1 P&A 280 3.
		DEFLECTION Calculation : ==================== Example: A W 12 x 22 is used for a simple span beam to carry a total uniformly distributed load of 10 kips, including the beam weight.
		The span is 16 ft.Find the maximum deflection A.
	www.ou.edu /class/hgruenwald/teach/4333/4333l13.htm (656 words)

	Dorlands Medical Dictionary
		H deflection, His bundle deflection, in the His bundle electrogram, the deflection due to advance of the depolarizing impulse through the bundle of His.
		intrinsic deflection, the sharp reversal in polarity of surface electrical charge in a muscle, such as is registered in an electrode directly attached to muscle, as the dipole of an action potential passes the electrode during muscle activity.
		intrinsicoid deflection, the sharp deflection occurring between the onset of the Q wave and the peak of the R wave in electrocardiography using indirect surface leads, such as unipolar precordial leads.
	www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_d_05zPzhtm (1837 words)

	Hancor - Deflection Testing
		Another test that may be required either in lieu of, or in addition to, visual inspections to CCTV, is a deflection test.
		Acceptable deflection limits for Hancor pipe are 7.5% of the base inside diameter.
		The mandrel settings that correspond to this amount of deflection are shown in the Table.
	www.hancor.com /certification/ro3d8un0me4lt/html/deflectiontest.html (290 words)

	Deflection of Beams and Cantilevers teaching equipment
		TQ's Deflection of Beams and Cantilevers teaching apparatus enables a range of laboratory, classroom and computer-based experiments for civil, mechanical and structural engineering students studying the principles of deflection of beams and cantilevers.
		The Deflection of Beams and Cantilevers hardware is ideal for laboratory or classroom investigations into beam deflection under various load and fixing conditions.
		The Deflection of Beams and Cantilevers hardware includes knife edges, weights, weight hangers, digital deflection indicator, rule, vernier, a lecturer guide and a student guide.
	www.tqstructures.com /STR4/deflection-of-beams-and-cantilevers.htm (378 words)

	Deflection Lines - Logging Plan Example
		The Deflection Lines shown in BL 109 were drawn with the mouse on the screen and "draped" over the model.
		The elevations along a draped feature are automatically determined from the terrain model and can then be used for deflection analysis.
		Each deflection line can be positioned and repositioned, while viewing the profile window.
	www.softree.com /products/cableapp.htm (195 words)

	Structural engineering other topics - Lintel/Window Head Deflection Limit? (Site not responding. Last check: 2007-10-22)
		In general, most well designed window framing should accommodate well serviceability deflections of about 1/400 in most circumnstances if only because this or 1/500 are both ordinary deflection limits at service level both for vertical deflection and sway in whichever the direction.
		Although building codes allow a deflection limit of L/240 (maximum deflection limit,dead load), a deflection of 2.13" at what I would consider a "Critical Component" is excessive.
		Deflection at critical components should be limited from 1/2" to 1" for safety factors and component reliability.
	www.eng-tips.com /viewthread.cfm?qid=77926 (849 words)

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