group velocity of light
21Saturn's Gallic group of satellites — The Gallic group is a dynamical grouping of the prograde irregular satellites of Saturn following similar orbits. Their semi major axes range between 16 and 19 Gm, their inclinations between 35° and 40°, and their eccentricities around 0.53.The… …
22Ananke group — The Ananke group is a group of retrograde irregular satellites of Jupiter that follow similar orbits to Ananke and are thought to have a common origin.Their semi major axes (distances from Jupiter) range between 19.3 and 22.7 Gm, their orbital… …
23Firodia Group — Die Firodia Group ist eine indische Unternehmensgruppe der Fahrzeugindustrie mit Sitz in Pune. Die Unternehmen der Firodia Gruppe produzieren unter anderem motorisierte Zwei und Dreiräder, Light Commercial Vehicles (Pickups, Vans), Geländewagen,… …
24radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
25Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… …
26Electromagnetically induced transparency — The effect of EIT on a typical absorption line. A weak probe normally experiences absorption shown in blue. A second coupling beam induces EIT and creates a window in the absorption region (red). This plot is a computer simulation of EIT in an… …
27Cherenkov radiation — glowing in the core of the Advanced Test Reactor …
28Cutoff frequency — This article is about signal processing. For other uses, see Cutoff (disambiguation). Magnitude transfer function of a bandpass filter with lower 3 dB cutoff frequency f1 and upper 3dB cutoff frequency f2 …
29McCumber relation — The McCumber relation (or McCumber theory) refers to the effective cross sections of absorption and emission of light in the physics of solid state lasers [1][2]. Contents 1 Definition 2 Gain …
30групповая скорость света — Скорость распространения характерной точки огибающей группы световых волн, достаточно близких по частоте. Примечания 1. Групповая скорость света обычно совпадает со скоростью переноса энергии группой волн. 2. В недиспергирующих средах фазовая и… …
