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When an excited electron falls back to a state of lower energy, it undergoes electron relaxation (deexcitation [4]). This is accompanied by the emission of a photon (radiative relaxation/spontaneous emission) or by a transfer of energy to another particle. The energy released is equal to the difference in energy levels between the electron ...
Atoms can be excited by heat, electricity, or light. The hydrogen atom provides a simple example of this concept.. The ground state of the hydrogen atom has the atom's single electron in the lowest possible orbital (that is, the spherically symmetric "1s" wave function, which, so far, has been demonstrated to have the lowest possible quantum numbers).
An exciton is a bound state of an electron and an electron hole which are attracted to each other by the electrostatic Coulomb force resulting from their opposite charges. It is an electrically neutral quasiparticle regarded as an elementary excitation primarily in condensed matter, such as insulators, semiconductors, some metals, and in some liquids.
Words for these concepts are sometimes cited as antonyms to schadenfreude, as each is the opposite in some way. There is no common English term for pleasure at another's happiness (i.e.; vicarious joy), though terms like 'celebrate', 'cheer', 'congratulate', 'applaud', 'rejoice' or 'kudos' often describe a shared or reciprocal form of pleasure.
the part of the road nearest the vehicles going in the opposite direction, used especially by faster vehicles (US: inside lane) (in both cases the term applies to the rightmost lane in the direction concerned) the part of the road nearest the edge, used especially by slower-moving vehicles (UK: inside lane) overall(s) (n.)
An unpaired word is one that, according to the usual rules of the language, would appear to have a related word but does not. [1] Such words usually have a prefix or suffix that would imply that there is an antonym , with the prefix or suffix being absent or opposite.
Free agent first baseman Pete Alonso remains unsigned less than a week from February, and New York Mets owner Steve Cohen got "brutally honest" during an event Saturday about winter negotiations ...
Alternatively, if the excited-state atom is perturbed by an electric field of frequency ν 0, it may emit an additional photon of the same frequency and in phase, thus augmenting the external field, leaving the atom in the lower energy state. This process is known as stimulated emission.