electrons and positrons

См. также в других словарях:

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics — PAMELA is a bacronym for Payload for Antimatter Matter Exploration and Light nuclei Astrophysics .Launched on 15 June 2006, PAMELA is the first satellite dedicated to detecting cosmic rays and also antimatter from space, in the form of positrons… …   Wikipedia

• particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …   Universalium

• Électron — Traduction à relire Electron → …   Wikipédia en Français

• Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …   Wikipedia

• subatomic particle — or elementary particle Any of various self contained units of matter or energy. Discovery of the electron in 1897 and of the atomic nucleus in 1911 established that the atom is actually a composite of a cloud of electrons surrounding a tiny but… …   Universalium

• DESY — Sign at the entrance of DESY in Hamburg. The DESY (Deutsches Elektronen Synchrotron, German Electron Synchrotron ) is the biggest German research center for particle physics, with sites in Hamburg and Zeuthen. DESY s main purposes are fundamental …   Wikipedia

• antimatter — /an tee mat euhr, an tuy /, n. Physics. matter composed only of antiparticles, esp. antiprotons, antineutrons, and positrons. [1950 55; ANTI + MATTER] * * * Substance composed of elementary particles having the mass and electric charge of… …   Universalium

• Sokolov-Ternov effect — The Sokolov Ternov effect is the effect of self polarization of relativistic electrons or positrons moving at high energy in a magnetic field. The self polarization occurs through the emission of spin flip synchrotron radiation. The effect was… …   Wikipedia

• Future of an expanding universe — Big Freeze redirects here. For other uses, see Big Freeze (disambiguation). Physical cosmology Univ …   Wikipedia

• International Linear Collider — The International Linear Collider (ILC) is a proposed linear particle accelerator. It is planned to have a collision energy of 500 GeV initially, and, if approved after the project has published its Technical Design Report, planned for 2012,… …   Wikipedia