A model of semiconductor behaviour in which donors contribute the charge of an electron, and acceptors contribute a space for same, in effect contributing a fictional positive charge of similiar magnitude. Physicists use the electron model. Some language theorists consider language and the electron to be models in themselves.
Contrast hole model.
noun, Electronics. 1. a vacuum tube containing a number of dynodes that serve to amplify the flow of electrons from the cathode by means of secondary emission. noun 1. (physics) a device for amplifying and measuring a flux of electrons. Each electron hits an anode surface and releases secondary electrons that are accelerated to a […]
[ih-lek-tron-noo-tree-noh, -nyoo-] /ɪˈlɛk trɒn nuˌtri noʊ, -nyu-/ noun, plural electron-neutrinos. Physics. 1. a type of neutrino that obeys a conservation law together with the electron, with the total number of electrons and electron-neutrinos minus the total number of their antiparticles remaining constant.
noun, (used with a singular verb) 1. the study and use of the physical and optical properties of beams of electrons under the influence of electric or magnetic fields. noun 1. (functioning as sing) the study and use of beams of electrons and of their deflection and focusing by electric and magnetic fields
noun 1. Chemistry. two electrons occupying the same orbital in an atom or molecule; two electrons working together, especially forming a nonpolar covalent bond between atoms. 2. Physics. an electron and a positron produced in a reaction, as by a high-energy photon. electron pair