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mixed picture
(idiomatic) A situation in which both negatives and positives are found.
picture paper
(dated) comic book
pretty as a picture
enter the picture
(figuratively) To become part of, to become relevant.
( present singular third-person )
( participle present )
( participle past )
( past )
picture disc
A phonograph record with images on the playable surface, rather than plain vinyl.
picture discs
plural of picture disc
interaction picture
(quantum mechanics) An intermediate representation between the Schrödinger picture and the Heisenberg picture, useful in dealing with changes to the wave functions and observables due to interactions.
Heisenberg picture
(quantum mechanics) A formulation of quantum mechanics in which the operators (observables and others) incorporate a dependency on time, but the state vectors are time-independent, an arbitrary fixed basis rigidly underlying the theory. It stands in contrast to the Schrödinger picture in which the operators are constant, and further serves to define a third, hybrid picture, the interaction picture.
Dirac picture
(quantum mechanics) Synonym of interaction picture
picture sorts
plural of picture sort