Electron – positron annihilation occurs when an electron () and a positron (, the electron's antiparticle ) collide.

* Electron density ()

Electron states are best represented by time-depending " mixtures " ( linear combinations ) of multiple orbitals.

There are at least 500 known games for the Electron and the true total is probably in the thousands.

FireTrack exploits a division in the way the Electron handles its display — of the seven available graphics modes, two are configured so that the final two of every ten scanlines are blank and are not based on the contents of RAM.

Notable enterprises which produced discs of such software are BBC PD, Electron User Group and HeadFirst PD.

( C ) 1983 Acorn Computers Ltd. Thanks are due to the following contributors to the development of the Electron ( among others too numerous to mention ):- Bob Austin, Astec, Harry Barman, Paul Bond, Allen Boothroyd, Ben Bridgewater, Cambridge, John Cox, Chris Curry, 6502 designers, Jeremy Dion, Tim Dobson, Joe Dunn, Ferranti, Steve Furber, David Gale, Andrew Gordon, Martyn Gilbert, Lawrence Hardwick, Hermann Hauser, John Herbert, Hitachi, Andy Hopper, Paul Jephcot, Brian Jones, Chris Jordan, Computer Laboratory, Tony Mann, Peter Miller, Trevor Morris, Steve Parsons, Robin Pain, Glyn Phillips, Brian Robertson, Peter Robinson, David Seal, Kim Spence-Jones, Graham Tebby, Jon Thackray, Topexpress, Chris Turner, Hugo Tyson, John Umney, Alex van Someren, Geoff Vincent, Adrian Warner, Robin Williamson, Roger Wilson.

Electron avalanches are essential to the dielectric breakdown process within gases.

There are a number of common, standard and manufacturer-driven numbering and coding schemes for diodes ; the two most common being the EIA / JEDEC standard and the European Pro Electron standard:

Electron beams are used in welding, which allows energy densities up to across a narrow focus diameter of and usually does not require a filler material.

Electron microscopes are used to observe a wide range of biological and inorganic specimens including microorganisms, cells, large molecules, biopsy samples, metals, and crystals.

Electron microscopes are expensive to build and maintain, but the capital and running costs of confocal light microscope systems now overlaps with those of basic electron microscopes.

For discrete devices, for example, there are three standards: JEDEC JESD370B in United States, Pro Electron in Europe and Japanese Industrial Standards ( JIS ) in Japan.

Electron beam tomography is a specific form of CT in which a large enough X-ray tube is constructed so that only the path of the electrons, traveling between the cathode and anode of the X-ray tube, are spun using deflection coils.

Electron transport chains are the cellular mechanisms used for extracting energy from sunlight in photosynthesis and also from redox reactions, such as the oxidation of sugars ( respiration ).

Electron transport chains are major sites of premature electron leakage to oxygen, generating superoxide and potentially resulting in increased oxidative stress.

Solvent-based Inks, Water-based Inks, EB ( Electron Beam ) curing inks, UV ( ultraviolet ) Curing Inks and two-part chemically-curing inks ( usually based on polyurethane isocyanate reactions ), although these are uncommon at the moment.

Electron capture for almost all non-noble gas atoms involves the release of energy and thus are exothermic.

Electron lenses are designed to act in a manner emulating that of an optical lens, by focusing parallel rays at some constant focal length.

Electron lenses are manufactured from iron, iron-cobalt or nickel cobalt alloys, such as permalloy.

Electron densities are often be rendered in terms of an isosurface ( an isodensity surface ) with the size and shape of the surface determined by the value of the density chosen, or in terms of a percentage of total electrons enclosed.

Electron densities are often probed with X-ray diffraction scans, where X-rays of a suitable wavelength are targeted towards a sample and measurements are made over time to represent, probabilistically, where electrons can be found, from these positions molecular structures can often be determined for crystallized systems.

Electron beams are useful for treating superficial lesions because the maximum of dose deposition occurs near the surface.

Electron gas can undergo plasma oscillation, which is waves caused by synchronized variations in electron density, and these produce energy emissions that can be detected by using radio telescopes.

The Magnetometer and Electron Reflectometer ( collectively, MAG / ER ) detected anomalous surface magnetic fields on the Moon, which are in stark contrast to a global magnetosphere ( which the Moon lacks ).

The Electron was able to save and load programs onto audio cassette via a supplied converter cable that connected it to any standard tape recorder that had the correct sockets.

The Cartridge-port ROM-slots provided additional control lines, ( compared to the lines available via the Edge-connector on the rear of the Electron ), such as ROMSTBY, SNDIN, ROMQA, and some additional Voltage sources (+ 16V ) etc.

The playback on the Electron was made more impressive by the fact that the machine could only play a single note at a time ( it used a monophonic version of the sound chip ), thus the polyphony was achieved via 50hz interrrupt-driven note-switching to achieve the necessary chords.

Electron capture is the main decay mode for isotopes lighter than the < sup > 51 </ sup > V.

Electron capture is the primary decay mode for isotopes with a relative superabundance of protons in the nucleus, but with insufficient energy difference between the isotope and its prospective daughter ( with one less positive charge ) for the nuclide to decay by emitting a positron.

Electron capture also exists as a viable decay mode for radioactive isotopes with sufficient energy to decay by positron emission, where it competes with positron emission.

The Teignmouth Electron, the boat in which Donald Crowhurst attempted to sail round the world single-handed in the Sunday Times Golden Globe Race, has been left to decay on the south coast of Cayman Brac.

This turns out to be correct and leads to the development of a cheap, clean, and apparently endless source of energy: the " Electron Pump ", which trades matter between our universe ( where plutonium 186 decays into tungsten 186 ) and a parallel one governed by slightly different physical laws ( where tungsten 186 turns into plutonium 186 ), yielding a nuclear reaction in the process.

Electron transfer is one of the simplest forms of a chemical reaction.

Electron transfer may be one of the most basic forms of chemical reaction but without it life cannot exist.

* Event, Particle accelerator, experiments which produce high energy ( Electron volt | MeV, GeV, and TeV ) subatomic particle collisions

The Transmission Electron Aberration-corrected Microscope is capable of sub-0. 05 nm resolution, which is more than enough to resolve individual atoms.

The Deutsches Elektronen-Synchrotron ( German Electron Synchrotron ), commonly abbreviated DESY, is a national research center in Germany which operates particle accelerators used to investigate the structure of matter.

A few years later in 1967, Siegbahn published a comprehensive study on XPS bringing instant recognition of the utility of XPS, which he referred to as ESCA ( Electron Spectroscopy for Chemical Analysis ).

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.

Acorn Computers Ltd implemented a 1200 baud variation of CUTS in their BBC Micro and Acorn Electron microcomputers, which reduced a ' 0 ' bit to one cycle of a 1200 Hz sine wave and a ' 1 ' bit to two cycles of a 2400 Hz wave.

Both the Large Electron – Positron Collider and Tevatron had set limits for specific models which have now been exceeded by the Large Hadron Collider.

Electron microprobe analysis of a thin-section of the sample from Big Creek revealed the new mineral, which resembled ordinary apatite.

* Electron transfer, the process by which an electron moves from one atom or molecule to another

Electron sources based on field emission have a number of applications, but it is most commonly an undesirable primary source of vacuum breakdown and electrical discharge phenomena, which engineers work to prevent.

The exchange with the second parallel universe both produces more energy at little or no cost ( which is a pleasant side effect for the Lunar residents, who had been unable to establish electron pumps ), and balances out the changes from the use of the Electron Pump, resulting in a return to equilibrium.

Electron ionization ( EI, formerly known as electron impact ) is an ionization method in which energetic electrons interact with gas phase atoms or molecules to produce ions.

Electron Power Systems, Inc. of Acton, Massachusetts, United States, claims to have developed a technology for maintaining small stable plasma toroids called electron spiral toroids ( ESTs ) which remain stable in Earth's atmosphere without the use of any special magnetic fields.

CC theory is simply the perturbative variant of the Many Electron Theory ( MET ) of Oktay Sinanoğlu, which is the exact ( and variational ) solution of the many electron problem, so it was also called " Coupled Pair MET ( CPMET )".

( Electron correlation should not be confused with electron exchange, which is fully accounted for in the Hartree – Fock method.

As well as games, they also produced a large number of educational titles, extra computer languages and business and utility packages-these included ROM-based word processor VIEW and the spreadsheet ViewSheet which Acorn supplied on ROM chips / cartridges for the BBC Micro / Acorn Electron and included as standard in the BBC Master and Acorn Business Computer.

A particularly interesting variant of this device is the HEMT, or High Electron Mobility Transistor, which also utilizes a heterojunction to provide a device with extremely high conductance.

Wigglers have a damping effect on storage rings, which is the function to which they first put at the Cambridge Electron Accelerator in Massachusetts in 1966.

* Electron capture detector ( ECD ), which uses a radioactive Beta particle ( electron ) source to measure the degree of electron capture.