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Topic: Reflection (electrical)

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	reflection - Search Results - MSN Encarta
		Reflection, in physics, phenomenon of wave motion, in which a wave is returned after impinging on a surface.
		Reflection or Reflexion may refer to: *Reflection (physics), a wave phenomenon commonly observed in mirrors.
		Reflection is the change in direction of a wave front at an interface between two dissimilar media so that the wave front returns into the medium from which it originated.
	encarta.msn.com /encnet/refpages/search.aspx?q=reflection (247 words)

	Reflection
		Phong reflection model The Phong reflection model is a shading model, used heavily in cone.
		Reflection seismology Reflection seismology is a branch of echolocation.
		Signal reflection When a signal is transmitted along a transmission medium, such as a copper cable or an VSWR with a VSW...
	www.brainyencyclopedia.com /topics/reflection.html (241 words)

	Reflection (electrical) - Wikipedia, the free encyclopedia
		Reflection in electricity is the result of impedance mismatch in electrical signals.
		Impedance discontinuities cause attenuation because a portion of a transmitted signal will be reflected back to the transmitting device rather than continuing to the receiver, much like an echo.
		Mathematically, it is calcuated using the reflection coefficient, symbolized with a gamma.
	en.wikipedia.org /wiki/Reflection_(electrical) (245 words)

	Reflection - Wikipedia, the free encyclopedia
		In mathematics, reflection is the transformation of a space.
		In electricity, reflection is reflected voltage in an electrical signal due to an impedance change.
		A reflection is one's image as seen in a mirror.
	en.wikipedia.org /wiki/Reflection (207 words)

	Halloween costumes and supplies at the lowest prices! - Halloween Props
		You may have to experiment with the wattage combinations of the light bulbs (since the reflection will not be as bright of an image as just directly seeing an object, Light 2 may have to be a slightly higher wattage to make the effect look more natural.
		The audience can then see their own reflection and also what appears to be the image of the 'ghost' as well.
		Mount the two prong electrical plug on a six foot section of electrical wire.
	www.halloween-costumes-masks.com /halloween-props.asp (1968 words)

	info/guide/c/co/coefficient_of_reflection - Info and Guide. (Site not responding. Last check: 2007-11-07)
		Reflection (electrical) - Reflection (electrical) Reflection in electricity is the result of impedance mismatch in electrical signals.
		Fresnel reflection - Fresnel reflection In optics, Fresnel reflection is the reflection of a portion of incident light at a discrete interface between two media having different refractive indices.
		For a normal ray, the fraction of reflected incident power is given by the following equation, by where R is the reflection coefficient and n1 and n2 are the respective refractive indices of the two media: In general, the.
	pheeds.com /info/guide/c/co/coefficient_of_reflection.html (1941 words)

	Search Encyclopedia.com
		reflection reflection, return of a wave from a surface that it strikes into the medium through which it has traveled.
		The general principles governing the reflection of light and sound are similar, for both normally travel in straight lines and both are wave phenomena.
		battery, electric battery, electric, device that converts chemical energy into electrical energy, consisting of a group of electric cells that are connected to act as a source of direct current.
	www.encyclopedia.com /searchpool.asp?target=Reflection+(electrical) (531 words)

	Electrical circuit with a testing device for testing the quality of electronic connections in the electrical circuit - ... (Site not responding. Last check: 2007-11-07)
		Given the inventive electrical circuit with a device for testing connections in electrical circuits, the change of a test signal (27) due to the effect of a long line is used for determining the quality of an electrical connection (e.g., of a pin).
		An electrical circuit according to claim 9, wherein said evaluator is configured to compare said maximum value of said reply signal to a negative maximum value of said test signal as an anticipated value thus recognizing an electrical connection to ground as a proper condition and a faulty connection as a short to ground.
		An electrical circuit according to claim 9, wherein said evaluator is configured to compare said maximum value of said reply signal to a positive maximum value of said test signal as an anticipated value thus recognizing an electrical connection to an open terminal as a proper condition and a faulty connection as being interrupted.
	www.patentstorm.us /patents/6617869.html (7495 words)

	Patent 5281814: System for imaging and detecting threshold phenomena associated with and/or atomic or molecular spectra ...
		measuring the amplitude of the reflected signal at the electrode to detect threshold phenomena associated with and/or atomic or molecular spectra or electrochemical response of the substance.
		The apparatus further comprises means connected to the electrode for measuring the amplitude of the reflected signal from the electrode to detect threshold phenomena associated with and/or atomic or molecular spectra of the substance.
		After the optimal frequency of the electrical signal to be applied is determined, the tunable source is preferably tuned to such frequency and the STM may then be used to scan a sample for differentiating different surface species or for obtaining images of the surfaces of the sample.
	www.freepatentsonline.com /5281814.html (6415 words)

	Reflection and Refraction of Plane Waves (Site not responding. Last check: 2007-11-07)
		Reflection and refraction of an arbitrary electromagnetic wave at a plane interf...
		Abstract: Reflection and refraction of an arbitrary electromagnetic wave at a pl...
		Reflection and refraction of electromagnetic waves by the plane boundary of a no...
	www.scienceoxygen.com /electrical/166.html (133 words)

	Nat' Academies Press, Stability, Failure, and Measurements of Boreholes and Other Circular Openings (1993)
		Standard electrical resistivity profiling methods are still used to provide general information on the distribution of rock properties with depth; the success of the method depends on the distribution of the resistivities beneath the surface array, and the uniqueness of the interpretations may be difficult to establish.
		Electrical tomography is useful and effective in defining the properties of a rock mass located between a number of boreholes or passages.
		As in the case of low-frequency electrical conductivity measurements, the radar images are related to contrasts in the electrical properties of rocks, rather than to the elastic moduli, state of stress, and fractures that influence the stability of the openings.
	www.nap.edu /books/NI000063/html/41.html (3722 words)

	Electronics and Signals
		One bit, on an electrical medium, is the electrical signal corresponding to binary 0 or binary 1.
		Whether the system is electrical, optical, or wireless, impedance mismatches cause reflections, and if enough energy is reflected, the binary (2-state) system can become confused by all the extra energy that is bouncing around.
		Electricity is carried to appliances and machines via wires concealed in walls, floors, and ceilings.
	html.rincondelvago.com /electronics-and-signals.html (4279 words)

	impedance
		Conventional current was defined early in the history of electrical science as a flow of positive charge, although we now know that, in the case of metallic conduction, current is caused by a flow of negatively charged electrons in the opposite direction.
		Sometimes that distance is called the "peak amplitude", distinguishing it from another concept of amplitude, used especially in electrical engineering: the root mean square amplitude, defined as the square root of the mean of the square of the maximum vertical distance of this graph from the horizontal axis.
		In the analysis of an alternating-current electrical circuit (for example a RLC series circuit), reactance is the imaginary part of impedance, and is caused by the presence of inductors or capacitors in the circuit.
	www.electricianeducation.com /theory/impedance.htm (3925 words)

	TeslaTech Resource Center ONLINE \| Spring Technology \| Spring's Discoveries
		Transparency around electrically disconnected surfaces is proportional to the size of the surface relative to the size of the magnesphere (D) - 1985.
		An electrical current is driven that forms a magnetic field that opposes the field that caused it.
		The densest reradiation is perpendicular to the electrical conductor.
	www.teslatech.info /ttstore/articles/spring/discover.htm (1393 words)

	Seismic Reflection
		The electrical resistivity method measures the bulk resistance of earth materials to the passage of electricity.
		This measurement correlates most strongly with the electrical properties of the pore water, the amount of pore water, and the presence of clay materials in the matrix.
		Electrical resistivity utilizing the Schlumberger sounding method consists of a pair of current electrodes (shown as A and B in the figure).
	www.1800geophysics.com /dm3.htm (988 words)

	Xilinx Packaging and Thermal Characteristics: Package Electrical Characterization (Site not responding. Last check: 2007-11-07)
		This reflection waveform, which includes the inductance of the die-paddle (for QFP and PLCC-type packages) and parallel combination of leads in the return path, is the self-inductance.
		The reflection waveform from the lead, which includes the sum of all capacitive coupling with respect to the lead under test, is then measured.
		In order to de-embed the electrical parasitics of the DUT fixture and the measuring probes, the short and the open compensation waveforms are also measured after each package measurement.
	www.xilinx.com /publications/products/packaging/elec.htm (1073 words)

	Patent 4535265: Surface acoustic wave transducer with internal acoustic reflection
		Although the surface acoustic waves are not reflected from portions A, electrical reflection compoments will be induced in these portions A by secondary signals generated when portions A are excited by the surface acoustic waves propagating under the electrodes 12a, 12b.
		The impulse response characteristic RE with respect to the electrical reflection components generated by the portions A and B of the strips changes with time as indicated by a chain line in FIG.
		Since the strips 53a to 53d are distributed in the width direction, the reflection component due to the response RA is made to have a similar amplitude in the interdigital direction and is undergone by the diffraction of the passed waves.
	www.freepatentsonline.com /4535265.html (3702 words)

	Electrical Wholesaling: This year's Top 250 listing is a reflection of the industry itself: slower growth, increasing ... (Site not responding. Last check: 2007-11-07)
		The relatively small increase is probably a reflection of the softening economy that distributors experienced toward the latter part of 2000.
		The industry's national chains, Graybar Electric Co. Inc., St. Louis; WESCO International Inc., Pittsburgh; Consolidated Electrical Distributors Inc., Westlake Village, Calif.; and GE Supply Inc., Shelton, Conn., are the four companies with branches in all regions of the United States.
		The electrical distributors who provided both a sales figure and a total number of employees had a sales per employee figure of $421,000, a decent increase over the $408,000 sales per employee in last year's listing.
	www.findarticles.com /p/articles/mi_m3720/is_9_82/ai_79382832 (925 words)

	NAP Skim View of:
		METHODS OF CHARACTERIZATION Field Electrical Measurements Electrical field methods measure changes in the earth's natural and induced electrical fields caused by changes in the source origins of the fields and in the electrical properties of the earth.
		These eddy currents and their associated secondary magnetic fields are directly proportional to the electrical properties of the shallow subsurface sediments and fluids beneath and between the two coils.
		The seismic reflection method is an image-based technique that produces a cross section of the volume of earth under investigation and shows acousticimpedance contrasts.
	www.nap.edu /nap-cgi/skimit.cgi?isbn=0309063590&chap=52-96 (1761 words)

	Theory of Wireless SAW Sensor Systems
		The right graph shows the variation of the electric reflection coefficient at center frequency of the sensing electrodes, including the matching circuitry which are put into a sandy soil, with respect to a change of the water content of this soil.
		The electrical length of the line varies with the changing water content of the soil due to the changing permitivity.
		Also shown are, again, the lines which result in a constant acoustic reflection of reflector #2, when this acoustic reflector is loaded with an external element with this electrical reflection coefficient.
	ieee-uffc.org /freqcontrol/tutorials/Reindl_2002_files/slide0389.htm (229 words)

	Reflection (Site not responding. Last check: 2007-11-07)
		Reflection (mathematics) : a transformation of a space
		Reflection (electrical) : reflected voltage in an electrical signal due to an impedance change
		Reflection (album) : album released by the heavy metal / goth metal band Paradise Lost in 1998.
	www.ceca.de /encyclopedia/r/re/reflection.html (114 words)

	THE MARCH OF TIME
		That's because so often when an electrical distributor is acquired, there's usually at least one industry icon who moves off center stage at the company because of retirement, restructuring or new responsibilities.
		Electrical equipment manufacturers are seeing more than their share of change, too, for all of the same reasons.
		Electrical distributors, independent manufacturers' reps and electrical manufacturers are a resilient lot, and most have been through much worse before.
	ewweb.com /mag/electric_march_time (477 words)

	Bandwidth Market, Ltd (Site not responding. Last check: 2007-11-07)
		Such iridescence is understood to be generally the result of an interference phenomenon wherein certain wavelengths reflected partially at the exterior of the coating are out of phase with light of that wavelength reflected from the interface of the coating with the substrate, while reflected light of other wavelengths is in phase and interferes additively.
		The degree to which the reflected light of a given wavelength cancels or interferes additively is a function of the wavelength and the optical thickness of the coating.
		In addition, it has good electrical conductivity and could be used, therefore, for applications including electrical resistance heating, etc. The high/low/high refractive index sandwiching feature of the invention is especially effective in use under an optically functional layer consisting of fluorinated tin oxide in certain distinct thickness ranges: 2500-3000 Angstroms, 3500-4000 Angstroms and 4800-5200 Angstroms.
	www.telequipment.com /resources/patents/data8/5271960.html (5804 words)

	VITA
		Azzam, R. A., "On the Reflection of Light at 45 Angle of Incidence," Optica Acta 26 113‑115, 301 (1979).
		Azzam, R. A., "Reflection of an Electromagnetic Plane Wave with 0 or π Phase Shift at the Surface of an Absorbing Medium," J. Opt.
		Azzam, R. A., "Equalization of Reflectance of Paralled‑Polarized Electromagnetic Plane Waves at Normal and Oblique Incidence of Interfaces between Transparent Media and its Use for Measurement of the Dielectric Constant," Appl.
	ece.engr.uno.edu /azzam (3932 words)

	Reflection
		Reflection enables Java code to discover information about the fields, methods and constructors of loaded classes, and to use reflected fields, methods, and constructors to operate on their underlying counterparts on objects, within security restrictions.
		The reflection API accommodates applications that need access to either the public members of a target object (based on its runtime class) or the members declared by a given class.
		Reflection is intended for use by language tools such as debuggers and class browsers.
	www.cs.uq.edu.au /~peters/java/tutorial/post1.0/whatsnew/reflection.html (198 words)

	Theory of Wireless SAW Sensor Systems
		Acoustic reflection P 11 of a split finger IDT as a function of the applied complex load impedance Z load =1/Y L.
		Thus, with this load, the acoustic reflection is at maximum and becomes nearly one.
		, the capacitance of the split finger IDT and the electrical load form a shunt resulting in an overall serial resonance.
	ieee-uffc.org /freqcontrol/tutorials/Reindl_2002_files/slide0491.htm (112 words)

	Impedance - Definition up Erdmond.Com
		is a measure for the manner and degree a component resists the flow of electrical current if a given voltage is applied.
		The existence of reflections allows the use of a Time-domain_reflectometer to locate mismatches in a transmission system.
		Wave_impedance ---- In complete analogy to the electrical impedance discussed here, one also defines acoustic_impedance, a complex number which describes how a medium absorbs sound by relating the amplitude and phase of an applied sound pressure to the amplitude and phase of the resulting sound flux.
	www.erdmond.com /Impedance.html (654 words)

	General Catalog 1993-95
		Physical Optics (3) II Fundamentals of electromagnetic waves; plane harmonic waves; light as a vector wave, reflection and refraction, interference, diffraction.
		Physical Optics Laboratory (1) II Fundamentals of electromagnetic waves; plane harmonic waves; light as a vector wave, reflection and refraction, interference, diffraction.
		Electrical and Optical Properties of Materials (3) I 1993-94 (Identical with MSE 434).
	catalog.arizona.edu /1993-95/opti.html (1811 words)

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