noun, (used with a singular verb)
the study and use of the physical and optical properties of beams of electrons under the influence of electric or magnetic fields.
(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
- Electron probe microanalysis
noun 1. a technique for the analysis of a very small amount of material by bombarding it with a narrow beam of electrons and examining the resulting X-ray emission spectrum
- Electron radiography
electron radiography n. A radiographic imaging process in which the incident x-rays are converted to a latent charge image and developed by a special printing process to eliminate background fog and image noise.
- Electron-ray tube
[ih-lek-tron-rey] /ɪˈlɛk trɒnˌreɪ/ noun, Electronics. 1. a small cathode-ray tube having a fluorescent screen on which the pattern varies with the voltage applied to the grid: used chiefly in radio receivers to indicate accuracy of tuning.