Image Mitochondrial electrontransportchain Etc4.svg thumb 400px The electrontransportchain in the mitochondrion ... membrane.png thumb 400px Photosynthetic electrontransportchain of the thylakoid membrane. An electrontransportchain ETC couples electronelectron transfer transfer between an electron donor such as Nicotinamide ... stress . Background The electrontransportchain consists of a spatially separated series of redox ... pass through the electrontransportchain to oxygen, which is reduced to water. The electrontransport ... and water soluble electron carriers. The overall electrontransportchain NADH Complex I Q Complex ... V of the electrontransportchain. Citation needed date May 2010 The F sub O sub component of ATP ... In the mitochondrial electrontransportchain electrons move from an electron donor NADH or QH sub ... In eukaryotes, NADH is the most important electron donor. The associated electrontransportchain ... the electrontransportchain via NADH dehydrogenase similar to Complex I in mitochondria or succinate ... electron donors nitrite, ferrous iron, etc. enter the electrontransportchain at the cytochrome level. When electrons enter at a redox level greater than NADH, the electrontransportchain must ... be described as the sum of two redox pairs. For example, the mitochondrial electrontransportchain ... an electrontransportchain. In photophosphorylation , the energy of sunlight is used to create a high ... through another electrontransportchain. Photosynthetic electrontransport chains have ... External links MeshName ElectronTransportChain Complex Proteins http www.khanacademy.org video electrontransportchain?playlist Biology Khan Academy, video lecture UMichOPM families superfamily ... transfer flavoproteins Cellular respiration Electrontransportchain No footnotes date November 2008 DEFAULTSORT ElectronTransportChain Category Cellular respiration Category Integral membrane proteins ... Electrontransportchain fi Elektroninsiirtoketju sv Elektrontransportkedja tr Elektron ta ma ... more details
The Monte Carlo method for electrontransport is a semiclassical Monte Carlo MC approach of modeling semiconductor transport. Assuming the carrier motion consists of free flights interrupted by scattering ... Methods For ElectronTransport Category Articles created via the Article Wizard Category Monte Carlo ... transport equation The Boltzmann transport equation model has been the main tool used in the analysis of transport in semiconductors. The BTE equation is given by math frac partial f partial ... to extract all observable of interest and gives a full depiction of electron distribution in both ... Monte Carlo method is a statistical method used to yield exact solution to the Boltzmann transport ... s Golden Rule , whereas the transport between scattering events is treated using the classical particle ... of an electron is math frac dr dt frac 1 hbar nabla k E k math math frac dk dt frac qF r hbar math ... necessary for transport such as the density of states DOS and the particle velocity. A Full band E ... from the moments of the Boltzmann transport equation BTE using simplified approximation valid ... from the moments of the Boltzmann Transport Equation BTE . ref name Choi W.S. Choi, J. K. Ahn ... and velocity overshoot in NMOS devices at the 0.1 gate length level, IEEE Electron Device ... Trans. Electron Devices, 43, pp. 1870 5 1996 ref The summary of simulation results Illinois Tool ... region. Monte Carlo for semiconductor transport Band structure Band structure describes ... 1 m m 0 2 E g math where math m 0 math is the electron mass in vacuum, and Not a typo Eg is the energy ... of very high field transport, which requires the better physical model of the full band structure ... of charge, due to the movement of carriers. Random flight selection The probability that the electron ... P k t , dt , dt math where P k t dt is the probability that an electron in the state k suffers a collision ... for Solution of Charge Transport in Semiconductor with Application to Covalent Materials Rev. Modern ... more details
into single line entries. Infobox Particle name Electron image File Crookes tube in use lateral view standing cross prPNr 11.jpg 280px alt A glass tube containing a glowing green electron beam caption ... Rays A History of J J Thomson s Electron url http books.google.com ?id xUzaWGocMdMC&printsec ... Warwick first2 A. year 2001 title Histories of the Electron The Birth of Microphysics url http ... 44 page 293 ref symbol SubatomicParticle Electron , SubatomicParticle beta mass val 9.10938291 ... electric charge val 1 el e ref group note The electron s charge is the negative of elementary ... Bohr magneton sub B sub ref name 2010 CODATA spin frac 1 2 The electron symbol SubatomicParticle Electron is a subatomic particle with a negative elementary charge elementary electric charge . It has ... . ref name prl50 An electron has a rest mass mass that is approximately Proton to electron mass ... spin of the electron is a half integer value in units of reduced Planck constant , which means that it is a fermion . The antiparticle of the electron is called the positron it is identical to the electron .... When an electron positron annihilation electron collides with a positron , both particles may be totally ... mass. Since an electron is a fermion, no two electrons can occupy the same quantum state ... electron was introduced for this charge in 1894 by Irish physicist George Johnstone Stoney . The electron .... An electron in motion relative to an observer generates a magnetic field , and will be deflected by external magnetic fields. When an electron is accelerated, it can absorb or radiate energy in the form ... Coulomb s law Coulomb force between an electron and a proton causes electrons to be Binding energy ... individual electrons as well as Plasma physics electron plasma , whereas dedicated telescope s can detect electron plasma in outer space. Electrons have many applications, including Electron beam welding welding , cathode ray tube s, electron microscope s, radiation therapy , free electron laser lasers ... more details
edges to prevent cutting with bolt cutters. High tensile chain or Transportchain , chain with a high ...For other uses, see Chain unit or Chain disambiguation . Image Broad chain closeup.jpg thumb A broad metal chain made of torus shaped links. Image Grave chain with diamond shaped link pins.jpg thumb A metal chain with diamond shaped link pins. Image Kettenvergleich.jpg thumb Roller chains. A chain is a series of connected links which are typically made of metal. A chain may consist of two or more links ... lock , have links that are torus shaped, which make the chain flexible in two dimension s The fixed third dimension being a chain s length. Those designed for transferring power in machines have ... one dimension. They are known as Roller chain s, though there are also non roller chains such as block chain . Two distinct chains can be connected using a Maillon quick link which resembles a carabiner with a screw close rather than a latch. Uses for chain Uses for chain include Bicycle chain , transfers power from the pedals to the drive wheel of a bicycle thus propelling it Chain drive , the main feature that differentiated the safety bicycle Chain gun , type of machine gun that is driven by an external power source, sometimes connected by a chain, to actuate the mechanism rather than using recoil Chain pumps , type of water pump where an endless chain has positioned on it circular discs Chain linked Lewis , lifting device made from two curved steel legs Chainsaw , portable mechanical, motorized saw using a saw chain cutting chain to saw wood. Chain steam shipping Curb chain , used on curb bits when riding a horse Door chain , a type of security chain on a door that makes it possible ... inside Keychain , a small chain that connects a small item to a keyring Lead shank or Stud chain , used on horses that are misbehaving Lavatory chain, the chain attached to the cistern of an old fashioned ... cisterns no longer work like that, the phrase pull the chain is still encountered to mean flush ... more details
use. The final result is the electron is donated to an electron acceptor. During this process electrontransportchain the electron donor is oxidized and the electron acceptor is reduced. Petroleum hydrocarbons ...An electron donor is a chemical entity that donates electron s to another compound. It is a reducing agent that, by virtue of its donating electrons, is itself oxidize d in the process. Typical reducing agents undergo permanent chemical alteration through covalent or ionic reaction chemistry. This results in the complete and irreversible transfer of one or more electrons. In many chemical circumstances, however, the transfer of electronic charge to an electron acceptor may be only fractional, meaning an electron is not completely transferred, but results in an electron resonance between the donor ... retain their chemical identities. The electron donating power of a donor molecule is measured by its ionization potential which is the energy required to remove an electron from the highest occupied molecular orbital . The overall energy balance E , i.e., energy gained or lost, in an electron donor acceptor transfer is determined by the difference between the acceptor s electron affinity A and the ionization potential I math Delta E A I , math In chemistry , the class of electron donors that donate not just one, but a set of two paired electrons that form a covalent bond with an electron ... forces for electron donor and acceptor behavior in chemistry is based on the concepts of electropositivity for donors and electronegativity for acceptors of atomic or molecular entities. Electron donors in biology In biology , electron donors release an electron during cellular respiration , resulting in the release of energy . Microorganisms , such as bacteria , obtain energy in the electron ... compounds are all compounds that can act as electron donors. These reactions are of interest not only ... http toxics.usgs.gov definitions electron donor.html Electron donor definition at United States ... more details
. Fact date March 2008 In biology , a terminal electron acceptor is a compound that receives or accepts an electron during cellular respiration or photosynthesis . All organisms obtain energy by transferring electrons from an electron donor to an electron acceptor. During this process electrontransportchain the electron acceptor is reduced and the electron donor is oxidized . See also redox ...An electron acceptor is a chemical entity that accepts electron s transferred to it from another compound. It is an oxidizing agent that, by virtue of its accepting electrons, is itself redox reduced in the process. ref http toxics.usgs.gov definitions electron acceptor.html ref Typical oxidizing agents undergo permanent chemical alteration through covalent or ionic reaction chemistry, resulting in the complete and irreversible transfer of one or more electrons. In many chemical circumstances, however, the transfer of electronic charge from an electron donor may be only fractional, meaning an electron is not completely transferred, but results in an electron resonance between the donor and acceptor ... their chemical identities. The electron accepting power of an acceptor molecule is measured by its electron affinity which is the energy released when filling the lowest unoccupied molecular orbital LUMO . The overall energy balance E , i.e., energy gained or lost, in an electron donor acceptor transfer is determined by the difference between the acceptor s electron affinity A and the ionization potential I of the electron donor math Delta E A I , math . In chemistry , a class of electron acceptors that acquire not just one, but a set of two paired electrons that form a covalent bond with an electron ... The driving forces for electron donor and acceptor behavior in chemistry is based on the concepts .... Examples Examples of electron acceptors include oxygen , nitrate , iron III , manganese IV , sulfate ... definitions electron acceptor.html Electron acceptor definition at United States Geological ... more details
CHAIN can refer to CHAIN programming language CHAIN industry standard , an acronym for Ceced Home Appliances Interoperating Network, a standard for a multi brands home network of interactive household appliances. Controlled and Harmonised Aeronautical Information Network , a concept of EUROCONTROL to improve the quality of aeronautical data. Canadian High Arctic Ionospheric Network See also Chain . disambig ... more details
other uses Refimprove date March 2008 Infobox song Name The Chain Cover Artist Fleetwood Mac Album Rumours ... no 8 Misc Audiosample Background E6E8FA Upper caption Audio sample Audio file The Chain by Fleetwood Mac.ogg The Chain is a song from Fleetwood Mac s best selling album Rumours . The Chain is unique ... on the writing of Rumours , the final section of The Chain beginning with a bass progression was created ... to bring back Fleetwood Mac s The Chain date 24 February 2009 publisher Daily Telegraph accessdate ... Bros released a 4 CD Fleetwood Mac retrospective boxed set titled 25 Years The Chain . In 1997, Fleetwood ... of the Rumours era Fleetwood Mac members. The rendition of The Chain reached number 30 on the Billboard ... of Fleetwood Mac , including The Chain . On 29 March 2009, The Chain entered the UK Chart at 94 through ... One coverage, having regained broadcasting rights from ITV . On 20 March 2011, The Chain .... In 2009, Three Days Grace originally recorded The Chain for their album Life Starts Now ... song Lost in You EP , and since September 22, 2009, they have been playing The Chain at their concerts ... Mac s Rumours . 1980s rock band Shark Island band Shark Island included a cover of The Chain ... heavy metal music heavy metal band Kick Axe performed a cover of The Chain on Rock the World ... Dawn performed a cover of The Chain on their debut album titled Time to Burn . They regularly perform the song as part of their live sets. Country music band Little Big Town has performed a cover of The Chain at live concerts. Florence and the Machine performed a cover of The Chain at the Glastonbury ... in December 2009. The band Puscifer Maynard James Keenan covered The Chain during their 2011 tour. Television File Chainbass.png thumb 200px right The ending bass line from The Chain The ending bass line and guitar solo of The Chain was used as the theme song for the BBC s Formula One coverage .... ITV did not continue its use as the opening theme. However, The Chain returned in 2009 as the F1 ... more details
The electron liquid is a model system used by physicists to theoretically study interactions among electrons. The uniform electron liquid is a well known model for simple metals like sodium or Aluminum. The ionic charges are assumed to be smudged out to form a uniform static positive background, and the electrons are assumed to move in this positive background which maintains charge neutrality. This is also ..., then we have the free electron gas, or the free Fermi gas . However, when the Coulomb interaction is switched ... is known as the electron gas. At zero temperature, this happens if the density is very high ... interaction is weak and the free electron gas is a good approximation. Thus the high density regime is known as an electron gas . Perturbation theory can be used in this regime to discuss the properties of weakly interacting electron systems. When math r s math becomes greater than unity, interactions are important and this regime is known as the electron liquid . The electron liquid model holds ... i.e, in low density electron systems , the electron liquid crystallizes forming a crystalline phase known as the Wigner crystal . Perturbation theory fails for electron liquids where math r s 1 math ... electrons thus weakening it , a free electron like model known as the Landau&ndash Fermi liquid theory ... Monte Carlo simulations. b Integral equation methods, e.g., the Classical map hypernetted chain method CHNC , an acronym for the classical map hyper netted chain method, or the Fermi hyper netted chain method. Because of Fermi statistics, the electrons in the electron liquid fill up to an energy ... of 12 electron Volts. If the temperature is greater than 12 eV, the electron liquid becomes partially degenerate, since the states above the Fermi energy begin to get occupied. Such electron fluids ..., Many particle Physics Plasmas and finite T electron liquids M. W. C. Dharma wardana, Ed. E. K ..., NY 1993 Category Condensed matter physics Category Electron Liquid Category Article Feedback 5 ... more details
through the bonds comprising the chain structure of the proteins.. See also Electron equivalent References ...Electron transfer ET is the process by which an electron moves from an atom or a chemical species e.g. ..., and detoxification. Additionally, the process of energy transfer can be formalized as a two electron .... ISBN 0 12 352651 5. ref but there are now many examples of ET in organic chemistry . Classes of electron transfer There are several classes of electron transfer, defined by the state of the two redox centers and their connectivity Inner sphere electron transfer main Inner sphere electron transfer ..., in which case the electron transfer event is termed intramolecular electron transfer. More ... following the ET event. In such cases, the electron transfer is termed intermolecular electron ... partners. Outer sphere electron transfer main Outer sphere electron transfer In outer sphere ET reactions ..., the electron hops through space from the reducing center to the acceptor. Outer sphere electron transfer ... describes the Degenerate energy level degenerate reaction between permanganate and its one electron ... Mn O sub 4 sub sup sup In general, if electron transfer is faster than ligand substitution, the reaction will follow the outer sphere electron transfer. Often occurs when one both reactants are inert ... work w sub r sub 2. changing bond lengths, reorganize solvent activated complex 3. Electron transfer ... work w sub p sub Heterogeneous electron transfer main Heterogeneous electron transfer In heterogeneous electron transfer, an electron moves between a chemical species and a solid state electrode . Theories addressing heterogeneous electron transfer have applications in electrochemistry and the design ... to address outer sphere electron transfer and was based on a transition state theory approach. The Marcus theory of electron transfer was then extended to include inner sphere electron transfer ... most discussions of electron transfer ever since. Both theories are, however, semiclassical in nature ... more details
Wiktionarypar electron An electron is a subatomic particle. Electron may also refer to Electron bird , a genus of birds Electron vehicle , an electric urban vehicle concept by AMC Electron computer hacker , a member of an Australian hacking group Acorn Electron , an 8 bit computer by Acorn Computers Ltd Visa Electron , a brand of credit or debit cards Electron engine , a video game engine by Obsidian Entertainment L 188W Electron , an Argentine Navy version of the Lockheed L 188 Electra Electron comic book character , character by Apokalupsis Webcomics Electron or elementary charge e See also Elektron alloy , a range of magnesium alloys Electro disambiguation Elektron disambiguation Electrum disambig ast Electr n dixebra fr Electron la Electron discretiva nl Electron pl Electron uk ... more details
Image Cont dynode detector.jpg right thumb 300 px Continuous dynode electron multiplier An electron multiplier is a vacuum tube structure that multiplies incident charges. ref Citation doi 10.1063 1.1740838 title An Improved Electron Multiplier Particle Counter year 1947 last1 Allen first1 James S. journal ... In a process called secondary emission , a single electron can, when bombarded on secondary emissive material, induce emission of roughly 1 to 3 electron s. If an electric potential is applied between ... of Single Positive Ions, Electrons and Photons by a Secondary Electron Multiplier year ... issue 10 ref Hence the electron multiplier is often used as an ion detector. It could also be triggered by a photon causing vacuum photoemission of at least one electron. In a photomultiplier tube, a photo emissive surface is followed by an electron multiplier with several sequential multiplying electrodes ... a discrete dynode multiplier. A voltage divider chain of resistors is usually used to place each dynode at a potential 100 200v more positive than the previous one. File Electron multiplier.svg thumb right The Continuous Electron Multiplier A continuous dynode structure is feasible if the material ... known as single channel electron multiplier CEM , and one of the most common is sold under the trade name Channeltron. Another geometry of continuous dynode electron multiplier is called the microchannel ... Electron Multiple Arrays year 1969 last1 Burroughs first1 E. G. journal Review of Scientific Instruments ... parallel array of very small continuous dynode electron multipliers, built together and powered ... In mass spectrometry electron multipliers are often used as a detector of ions that have been ... Olympus Tutorial http www.sge.com products electron multipliers how electron multipliers work How Discrete Dynode Electron Multipliers work Category Measuring instruments Category Radio electronics Category Mass spectrometry Category Electron de Kanalelektronenvervielfacher fr lectromultiplicateur ... more details
electrons often collide with neutral atoms inelastically, sometimes ionizing them. In a Chain reaction chain reaction or an electron avalanche additional electrons recently separated from their positive ...An electron avalanche is a process in which a number of free electron s in a Transmission medium medium usually a gas are subjected to strong acceleration by an electric field , ion izing the medium s atoms by collision called impact ionization , thereby forming new electrons to undergo the same process in successive cycles. This uncontrolled positive feedback loop leads to a type of chain reaction . Electron avalanches are essential to the dielectric breakdown process within gases. The process can culminate in corona discharge s, streamer s, leader spark leader s, or in a electric spark spark or continuous electric arc arc that completely bridges the gap. The process extends to huge sparks streamers in lightning discharges propagate by formation of electron avalanches created in the high potential gradient ahead of the streamers advancing tips. Once begun, avalanches are often intensified by the creation of photoelectron s as a result of ultraviolet radiation emitted by the excited medium s atoms in the aft tip region. The process can also be used to detect ionizing radiation that initiates the process, in as much as the passage of a single particles can amplified to large discharges. This is the mechanism of a Geiger counter and also the visualization possible with a spark chamber ... polarity, whereas the electron will be acceleration accelerated in the opposite direction. Because of the huge ... generated by just a single initial electron. However, free electrons are easily captured ... free electron at position X sub 1 sub will result in M free electrons at position X sub 2 sub . Substituting ... gas molecule creating another accelerable electron. What differs is the source of this electron. When one or more electron avalanches occur between two electrodes of sufficient size, complete avalanche ... more details
Unreferenced stub auto yes date December 2009 Electron excitation is the movement of an electron to a higher energy state . This can either be done by photoexcitation PE , where the original electron absorbs the photon and gains all the photon s energy or by electrical Excited state excitation EE , where the original electron absorbs the energy of another, energetic electron. Within a semiconductor crystal lattice, thermal excitation is a process where lattice vibrations provide enough energy to move electrons to a higher energy band . When an excited electron falls back to a lower energy state again, it is called electron relaxation . This can be done by radiation of a photon or giving the energy to a third spectator particle as well. DEFAULTSORT Electron Excitation Category Electron Physics stub ja ... more details
Unreferenced stub auto yes date December 2009 Electron deficiency occurs when a compound has too few valence electron s for the connections between atoms to be described as covalent bond s. Electron deficient bonds are often better described as 3 center 2 electron bond s. Examples of compounds that are electron deficient are the borane s. The term electron deficient is also used in a more general way in organic chemistry , to indicate a pi bonding pi system such as an alkene or arene that has Polar effect electron withdrawing groups attached, as found in nitrobenzene or acrylonitrile . Instead of showing the nucleated character common with simple C C bonds, electron deficient pi systems may be electrophile electrophilic and susceptible to nucleophilic attack, as is seen in the Michael addition or in nucleophilic aromatic substitution . As the most extreme form of highly localize electron deficiency one can consider the metallic bond . DEFAULTSORT Electron Deficiency Category Chemical bonding Chem stub ar de Elektronenmangelbindung nl Elektronendefici ntie pt Defici ncia de el trons zh ... more details
Electron scattering is the process whereby an electron is deflected from its original trajectory . As they are charged particle s, they are subject to electromagnetic force s. Phenomena Electrons can be scattering scattered by other charged particles through the Coulomb s law electrostatic Coulomb forces . Furthermore, if a magnetic field is present, a traveling electron will be deflected by the Lorentz force . An extremely accurate description of all electron scattering, including quantum and relativistic aspects, is given by the theory of quantum electrodynamics . Types Common electron scattering processes include Compton scattering , in which an electron absorbs a photon and reemits it, changing the energy and momentum of both M ller scattering , in which two electrons scatter off of one another Bhabha scattering , in which an electron and a positron scatter Bremsstrahlung , in which an electron most commonly, but also any other particle passes by a heavy charged object like a nucleus , changes energy and direction, and emits a photon Deep inelastic scattering , in which a high energy electron interacts with a nucleus and breaks it up Synchrotron emission , in which an electron interacts with an external magnetic field, changes direction, and emits a photon. physics stub DEFAULTSORT Electron Scattering Category Electron Category Scattering de Elektronenstreuung it Scattering di elettroni ... more details
An electron orbital may refer to An atomic orbital , describing the behaviour of an electron in an atom A molecular orbital , describing the behaviour of an electron in a molecule See also Electron configuration , the arrangement of electrons in structures such as atoms or molecules Orbital hybridization , a combining of atomic orbitals to form an equal number of hybrid orbitals when forming certain molecule s disambig ja vi Orbital ... more details
mobility In solid state physics , the electron mobility characterizes how quickly an electron can ... quantity for Electron hole holes , called hole mobility . The term carrier mobility refers in general to both electron and hole mobility in semiconductors. Electron and hole mobility are special ... with an average velocity called the drift velocity , math , v d math . Then the electron mobility is defined as math ,v d mu E math . Electron mobility is almost always specified in units of square ... concentrations including donor and acceptor concentrations , defect concentration, temperature, and electron ... electric field, in a solid, electrons or, in the case of semiconductors , both electrons and electron ... is applied, each electron is accelerated by the electric field. If the electron were in a vacuum, it would be accelerated to faster and faster velocities called ballistic transport . However, in a solid, the electron repeatedly scatters off Crystallographic defect crystal defects , phonons , impurities ... velocity, called the drift velocity . This net electron motion is usually much slower than the normally occurring random motion. In a semiconductor the two charge carriers, electrons and Electron hole ... transport is possible in solids if the electrons are accelerated across a very small distance as small ... The electron mobility is defined by the equation math ,v d mu E math . where E is the Euclidean vector ... of the electron drift velocity in other words, the electron drift speed caused by the electric field, and is the electron mobility. The hole mobility is defined by the same equation. Both electron and hole mobilities are positive by definition. Usually, the electron drift velocity in a material is directly proportional to the electric field, which means that the electron mobility is a constant ... h math . If a semiconductor has both electrons and electron hole holes , the total conductivity is ref name BVZ math sigma e n mu e p mu h . math Examples Typical electron mobility for Silicon Si at room ... more details
Electron optics is a mathematical framework for the calculation of particle paths along given electrostatic ..., deflection, chromatic effects . Electron optics calculations are, besides other uses, needed for electron ... approximation , this can be done using ray transfer matrix analysis . Electron properties main Electron Electrons are charged particles point charge s with rest mass . The electron also has an associated spin physics spin of 1 2. While in motion an electron possesses kinetic energy , regardless of any ... into a screened field free region, which initially imparts the energy required to accelerate the electron. Given sufficient voltage, the electron can be accelerated sufficiently fast to exhibit measurable ... associated wave properties such as wavelength, phase and amplitude. With respect to electron optics, the nature of the electron as a charged particle causes electrons to interact with imposed electron ... of electron optical theory. Field interactions Particle interpretation Magnetic fields interact with an electron in a manner that alters velocity independently of kinetic energy velocity magnitude . Electrons move according to the cross product of the magnetic field and the electron propagation ... radius dependent upon electron velocity and magnetic field strength field strength according ... r is the orbit radius, m is the mass of an electron, v is the electron velocity, e is the charge on the electron ... electrostatic field, an electron will deflect towards the positive gradient of the field ... , a full analysis of electron paths can be obtained by solving Maxwell s equation however in many ... to not only the nucleus, but also the matter s electron charge cloud. Therefore electrons require vacuum to propagate any reasonable distance, such as would be desirable in electron optic ... 90685 3 ref See also Charged particle beam Strong focusing Electron beam technology Electron microscope ... eo.html Air Force Research Laboratory Electron Optics Program refend DEFAULTSORT Electron Optics ... more details
distinguish Visa Debit Refimprove date October 2010 globalize date January 2011 Image Visa Electron card.jpg thumb 250px Norway Norwegian old design Visa Electron card Image Visa Electron.PNG thumb 250px Sweden Swedish Visa Electron card featuring the new Electron logo Visa Electron is a debit card available ... card to the Visa Debit card. The difference between Visa Electron and Visa Debit is that payments with Visa Electron require that all the funds be available at the time of transfer, i.e., Visa Electron ... and aircraft do not support Visa Electron because their systems cannot check for the availability of funds ..., one bank may issue a Visa Electron debit card , while another may issue a credit card . It is most ... countries. This is because Visa Electron cards are also linked to the Visa PLUS interbank network ... s accounts. ref name bbc2 http news.bbc.co.uk 1 hi programmes moneybox 3717331.stm Electron users blocked online BBC News ref As of 2009, most UK banks have migrated away from Visa Electron of the major banks, only HBOS still issues the card ref name Halifax Visa Electron http www.halifax.co.uk bankaccounts other bank accounts easycash Halifax EasyCash Electron Card ref , with others including ... 1 hi business 8384034.stm Visa Electron cards to be phased out BBC News ref Lloyds TSB, Barclays ... cards Visa Electron has become popular with younger people and students. As each transaction requires funds to be checked accounts cannot be overdrawn. Therefore banks will issue a Visa Electron card ... Electron to customers who should not be allowed to go overdrawn, banks will issue what is ostensibly ... as Electron. This can cause these cards to be declined where an actual Visa Debit card would be accepted, for example at petrol pumps or train stations. As Visa Electron cards do not have Embossing ... which surcharge credit and debit card payments do not usually surcharge Visa Electron payments ... cards ref name bbc1 , but neither affords the card a special status any more. In China , Visa Electron ... more details
Electron holography is holography with electron waves. Dennis Gabor invented holography in 1948 ref D. Gabor, A new microscopic principle, Nature 4098, 777 1948 . ref when he tried to improve resolution in electron microscope. The first attempts to perform holography with electron waves were made by Haine and Muley in 1952 ref M. E. Haine, T. Mulvey, The formation of the diffraction image with electrons ... invented biprism for electrons and recording of electron holograms in off axis scheme became possible. Cowley has described 20 configurations for electron holography ref J. M. Cowley, Twenty forms of electron ... i.e. energy spread of electron beam are required to perform holographic measurements. High energy electron holography in off axis scheme Electron holography with high energy electrons 80 200keV can be realized in a transmission electron microscope TEM in off axis scheme. Electron beam is split into two parts by very thin positively charged wire. Positive voltage deflects the electron waves ... in TEM.jpg thumb An illustration to off axis electron holography in transmission electron microscope ... ref M. Lehmann, H. Lichte, Tutorial on off axis electron holography, Microsc. Microanal ... of the object function are reconstructed. Electron holography in in line scheme Original holographic ... electron beam, part of the wave is scattered by the object object wave and it interferes with the unscattered ... by the size of the electron source. Holography with low energy electrons 50 1000eV can be realized ..., Phys. Rev. Lett. 65 10 , 1204 1206 1990 . ref . File InlineHolography.jpg thumb Inline electron ... and sample must be properly grounded and shielded from outside noise. Applications Electron holography ref H. Lichte, Electron holography approaching atomic resolution, Ultramicroscopy 20, 293 1986 . ref ref A. Tonomura, Applications of electron holography, Rev. Mod. Phys. 59, 639 1987 . ref is commonly ... et al., Micros. Res. and Tech. 64, 390 2004 . ref . The principle of electron holography can also ... more details
unreferenced date December 2010 Electron spectroscopy is an analytical technique to study the electronic structure and its dynamics in atom s and molecule s. In general an excitation source such as x ray s, electron s or synchrotron radiation will eject an electron from an inner shell atomic orbital orbital of an atom. Detecting photoelectron s that are ejected by x rays is called x ray photoelectron spectroscopy XPS or electron spectroscopy for chemical analysis ESCA . Detecting electrons that are ejected from higher orbitals to conserve energy during electron transitions is called Auger electron spectroscopy AES . Experimental applications include high resolution measurements on the intensity and angular distributions of emitted electrons as well as on the total and partial ion yields. Ejected electrons can escape only from a depth of approximately 3 nanometers or less, making electron spectroscopy most useful to study surfaces of solid materials. Depth profiling is accomplished by combining an electron spectroscopy with a sputtering source that removes surface layers. Synchrotron radiation research work has been carried out at the MAX Laboratory in Lund, Sweden, Elettra Storage Ring in Trieste, Italy, and at ALS in Berkeley, CA. External links http www.chemistry.adelaide.edu.au external soc rel content e spec.htm The University of Adelaide, Australia http physics.oulu.fi elsp.php?tag top&lang en The University of Oulu, Finland analytical chemistry stub Category Spectroscopy de Elektronenspektroskopie fa hr Elektronska spektroskopija pl Spektroskopia elektronowa ru uk ... more details
Electron Equivalent is a concept commonly used in redox chemistry , reactions involving electron transfer , to define a quantity e.g. energy or moles relative to one electron. Gibbs free energy Energies of formation are often given as kilojoules per electron equivalent to enable calculation of specific reaction energies on a per electron basis. Reactions containing movement of electrons are often balanced such that reaction quantities are given in relation to the transfer of a single electron, allowing quantification of reactants and products in relation to a single electron transfer. References Refbegin cite book last1 Rittman first1 B.E. last2 McCarty first2 P.L. title Environmental Biotechnology Principles and Applications publisher McGraw Hill date 2001 page 60 isbn 0072345535 cite book last1 Schwarzenbach first1 Rene P. last2 Gschwend first2 Philip M. last3 Imboden first3 Dieter title Environmental Organic Chemistry edition 2nd date 2003 isbn 0471357302 publisher John Wiley & Sons page 568 cite book last1 Sayyar first1 Bahareh title Thermodynamic electron equivalent models for Geobacter species publisher University of Toronto Canada date 2008 isbn 0494449144 Refend Category Thermodynamic free energy Category Fundamental physics concepts Category Chemical reactions chemistry stub ... more details
dablink This article is about nuclear physics. For electron capture processes in chemistry, see Electron capture ionization and Electron capture dissociation . See also Beta decay File Elektroneneinfang 2 Phasen .png thumb Electron capture Electron capture is a process in which a proton rich nuclide absorbs an inner atomic electron changing a nuclear proton to a neutron and simultaneously emits a neutrino ... state of the new nuclide. Electron capture is the primary decay mode for isotope s with a relative ... by emitting a positron . Electron capture also exists as a viable decay mode for radioactive ... to allow it, and thus electron capture is the sole decay mode. For example, rubidium 83 37 protons, 46 neutrons will decay to krypton 83 36 protons, 47 neutrons solely by electron capture the energy ... of electron capture, one of the orbital electron s, usually from the K or L electron shell K electron capture , also K capture , or L electron capture , L capture , is captured by a proton in the nucleus, forming a neutron and an electron neutrino . border 0 style height 2em SubatomicParticle link yes Proton SubatomicParticle link yes Electron SubatomicParticle link yes Neutron SubatomicParticle link yes Electron Neutrino Since the proton is changed to a neutron in electron capture, the number of neutrons increases by 1, the number of protons decreases by 1, and the atomic mass number remains unchanged. By changing the number of protons, electron ... in charge, now exists in an energetically excited state with the inner shell missing an electron .... History The theory of electron capture was first discussed by Gian Carlo Wick in a 1934 paper, and then developed by Hideki Yukawa and others. K electron capture was first observed by Luis Alvarez ... Electron Capture by Nuclei, Emilio Segr , chapter 3 in Discovering Alvarez selected works of Luis W ... Accessed on line October 7, 2009. ref ref Nuclear K Electron Capture, Luis W. Alvarez, Physical ... more details
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