Chemistry. two electrons occupying the same orbital in an atom or molecule; two electrons working together, especially forming a nonpolar covalent bond between atoms.
Physics. an electron and a positron produced in a reaction, as by a high-energy photon.
- 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.
noun, Physics. 1. the flipping back and forth between two spin directions of electrons in a magnetic field when electromagnetic radiation of the proper frequency is applied. Abbreviation: ESR. noun 1. a technique for investigating paramagnetic substances by subjecting them to high-frequency radiation in a strong magnetic field. Changes in the spin of unpaired electrons […]