noun, Physics, Chemistry.
the quantitative measure, usually given in electron-volts, of the tendency of an atom or molecule to capture an electron and to form a negative ion.
a measure of the ability of an atom or molecule to form a negative ion, expressed as the energy released when an electron is attached A
the amount of energy needed to remove an electron from a negatively charged ion; also, the energy released when a single electron is combined with an isolated atom
noun, Electronics. 1. an apparatus that converts an optical image into a corresponding electric current by electronic means without the intervention of mechanical scanning.
- Electron capture
noun (physics) 1. the transformation of an atomic nucleus in which an electron from the atom is spontaneously absorbed into the nucleus. A proton is changed into a neutron, thereby reducing the atomic number by 1. A neutrino is emitted. The process may be detected by the consequent emission of the characteristic X-rays of the […]
- Electron carrier
electron carrier Any of various molecules that are capable of accepting one or two electrons from one molecule and donating them to another in the process of electron transport. As the electrons are transferred from one electron carrier to another, their energy level decreases, and energy is released. Cytochromes and quinones (such as coenzyme Q) […]
noun, Physics. 1. the phenomenon whereby electron waves scattered by the regularly spaced atoms of a crystal produce diffraction patterns characteristic of the crystal structure and the wavelength.