virtual photon

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• virtual photon — virtualusis fotonas statusas T sritis fizika atitikmenys: angl. virtual photon vok. virtuelles Photon, n rus. виртуальный фотон, m pranc. photon virtuel, m …   Fizikos terminų žodynas

• Virtual particle — In physics, a virtual particle is a particle that exists for a limited time and space, introducing uncertainty in their energy and momentum due to the Heisenberg Uncertainty Principle. (Indeed, because energy and momentum in quantum mechanics are …   Wikipedia

• photon virtuel — virtualusis fotonas statusas T sritis fizika atitikmenys: angl. virtual photon vok. virtuelles Photon, n rus. виртуальный фотон, m pranc. photon virtuel, m …   Fizikos terminų žodynas

• Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …   Wikipedia

• Photon sphere — A photon sphere is a spherical region of space where gravity is strong enough that photons of light are forced to travel in orbits. The formula to find the radius for a circular photon orbit is: r=3GM/C2. Because of this equation photon spheres… …   Wikipedia

• virtuelles Photon — virtualusis fotonas statusas T sritis fizika atitikmenys: angl. virtual photon vok. virtuelles Photon, n rus. виртуальный фотон, m pranc. photon virtuel, m …   Fizikos terminų žodynas

• Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… …   Wikipedia

• Renormalization — Quantum field theory (Feynman diagram) …   Wikipedia

• Variable speed of light — The variable speed of light (VSL) concept states that the speed of light in a vacuum, usually denoted by c , may not be constant in some cases. In most situations in condensed matter physics when light is traveling through a medium, it… …   Wikipedia

• quantum electrodynamics — Physics. the quantum field theory that deals with the electromagnetic field and its interaction with electrons and positrons. Abbr.: QED [1925 30] * * * ▪ physics        quantum field theory of the interactions of charged (electric charge)… …   Universalium

• Peripheral nuclear collisions — of two relativistic colliding charges is equivalent to a collision between swarming photons. ] Brief historyIn 1924, Enrico Fermi, then 23 years old, submitted a paper On theTheory of Collisions Between Atoms and Elastically Charged Particles to… …   Wikipedia