Fizikos terminų žodynas : lietuvių, anglų, prancūzų, vokiečių ir rusų kalbomis. – Vilnius : Mokslo ir enciklopedijų leidybos institutas. Vilius Palenskis, Vytautas Valiukėnas, Valerijonas Žalkauskas, Pranas Juozas Žilinskas. 2007.
Point spread function — The point spread function (PSF) describes the response of an imaging system to a point source or point object. A related but more general term for the PSF is a system s impulse response. The PSF in many contexts can be thought of as the extended… … Wikipedia
Radiator — Radiators and convectors are types of heat exchangers designed to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in automobiles, buildings, and… … Wikipedia
Isotropic radiator — An isotropic radiator is a theoretical point source of waves which exhibits the same magnitude or properties when measured in all directions. It has no preferred direction of radiation. It radiates uniformly in all directions over a sphere… … Wikipedia
Zero-point field — In quantum field theory, the zero point field is the lowest energy state of a field, i.e. its ground state, which is non zero. [cite book | last = Gribbin | first = John | title = Q is for Quantum An Encyclopedia of Particle Physics | publisher … Wikipedia
Zero-point energy — is the lowest possible energy that a quantum mechanical physical system may have; it is the energy of its ground state. All quantum mechanical systems undergo fluctuations even in their ground state and have an associated zero point energy, a… … Wikipedia
Focal point — A focal point may mean: * Focus (optics), the point at which initially collimated rays of light meet after passing through a convex lens, or reflecting off of a concave mirror. * In mathematics: ** Focus (geometry), a special point used in… … Wikipedia
Umbra — For other uses of the word umbra , see Umbra (disambiguation). For other uses of the word penumbra , see Penumbra (disambiguation). The umbra, penumbra and antumbra are the names given to the three distinct parts of a shadow which are created… … Wikipedia
Punktstrahler — taškinis spinduolis statusas T sritis fizika atitikmenys: angl. point source radiator vok. Punktstrahler, m rus. точечный излучатель, m pranc. émetteur ponctuel, m … Fizikos terminų žodynas
taškinis spinduolis — statusas T sritis fizika atitikmenys: angl. point source radiator vok. Punktstrahler, m rus. точечный излучатель, m pranc. émetteur ponctuel, m … Fizikos terminų žodynas
émetteur ponctuel — taškinis spinduolis statusas T sritis fizika atitikmenys: angl. point source radiator vok. Punktstrahler, m rus. точечный излучатель, m pranc. émetteur ponctuel, m … Fizikos terminų žodynas
