翻訳と辞書 Words near each other ・ Quasimesosella ussuriensis ・ Quasimidi ・ Quasimidi Polymorph ・ Quasimidi Sirius ・ Quasimode ・ Quasimode (band) ・ Quasimodo ・ Quasimodo (disambiguation) ・ Quasimodo (magazine) ・ Quasimodo (music venue) ・ Quasimodo d'El Paris ・ Quasimodo's Dream ・ Quasimodo's Dream (song) ・ Quasimoto ・ Quasinorm ・ Quasinormal mode ・ Quasinormal operator ・ Quasinormal subgroup ・ Quasintoceras ・ Quasioptics ・ Quasipaa ・ Quasipaa boulengeri ・ Quasipaa delacouri ・ Quasipaa exilispinosa ・ Quasipaa fasciculispina ・ Quasipaa jiulongensis ・ Quasipaa shini ・ Quasipaa spinosa ・ Quasipaa verrucospinosa ・ Quasipaa yei Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Quasinormal mode ： ウィキペディア英語版 Quasinormal mode Quasinormal modes (QNM) are the modes of energy dissipation of a perturbed object or field, ''i.e.'' they describe perturbations of a field that decay in time. ==Example== A familiar example is the perturbation (gentle tap) of a wine glass with a knife: the glass begins to ring, it rings with a set, or superposition, of its natural frequencies — its modes of sonic energy dissipation. One could call these modes ''normal'' if the glass went on ringing forever. Here the amplitude of oscillation decays in time, so we call its modes ''quasi-normal''. To a very high degree of accuracy, quasinormal ringing can be approximated by :$\backslash psi(t)\; \backslash approx\; e^\backslash cos\backslash omega^t$ where $\backslash psi\backslash left(t\backslash right)$ is the amplitude of oscillation, $\backslash omega^$ is the frequency, and $\backslash omega^$ is the decay rate. The quasinormal frequency is described by two numbers, :$\backslash omega\; =\; \backslash left(\backslash omega^\; ,\; \backslash omega^\backslash right)$ or, more compactly :$\backslash psi\backslash left(t\backslash right)\; \backslash approx\; \backslash operatorname(e^)$ :$\backslash omega\; =\backslash omega^\; +\; i\backslash omega^$ Here, $\backslash mathbf$ is what is commonly referred to as the quasinormal mode frequency. It is a complex number with two pieces of information: real part is the temporal oscillation; imaginary part is the temporal, exponential decay. :: In certain cases the amplitude of the wave decays quickly, to follow the decay for a longer time one may plot $\backslash log\backslash left|\backslash psi(t)\backslash right|$ :: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quasinormal mode」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.