fast-moving electron
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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
electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube … Universalium
Electron beam tomography — (EBT) is a specific form of computed axial tomography (CAT or CT) in which the X ray tube is not mechanically spun in order to rotate the source of X ray photons. This different design was explicitly developed to better image heart structures… … Wikipedia
Field electron emission — It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. Field emission (FE) (also known as field… … Wikipedia
Acorn Electron — The Acorn Electron is a budget version of the BBC Micro educational/home computer made by Acorn Computers Ltd. It had 32 kilobytes of RAM, and its ROM included BBC BASIC along with its operating system.The Electron was able to save and load… … Wikipedia
atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… … Universalium
Euler's three-body problem — In physics and astronomy, Euler s three body problem is to solve for the motion of a particle that is acted upon by the gravitational field of two other point masses that are either fixed in space or move in circular coplanar orbits about their… … Wikipedia
ionization energy — ▪ chemistry also called ionization potential, in chemistry, the amount of energy required to remove an electron from an isolated atom or molecule. There is an ionization energy for each successive electron removed; the ionization energy… … Universalium
Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… … Wikipedia
beta particle — noun a high speed electron or positron emitted in the decay of a radioactive isotope • Hypernyms: ↑particle, ↑subatomic particle * * * ˈbeta particle 8 [beta particle beta particles] (also … Useful english dictionary
beta ray — noun radiation of beta particles during radioactive decay • Syn: ↑beta radiation, ↑electron radiation • Hypernyms: ↑corpuscular radiation, ↑particulate radiation, ↑ionizing radiation * * * noun … Useful english dictionary
