Mutual coherence (linear algebra) — In linear algebra, the coherence[1] or mutual coherence[2] of a matrix A is defined as the maximum absolute value of the cross correlations between the columns of A. Formally, let be the columns of the matrix A, which are assumed to be normalized … Wikipedia
Mutual coherence (physics) — Two sinusoidal oscillations of the same frequency are said to be mutually coherent if they exhibit a constant phase relationship during the course of time. See also Coherence (physics) Energy Phased array External links Z.W.Wolkowski The Concept… … Wikipedia
Coherence — Coherence, coherency, or coherent can refer to: Contents 1 In physics 2 In mathematics 3 In financial economics 4 In philosophy … Wikipedia
Coherence theory — In physics, coherence theory is the study of optical effects arising from partially coherent light and radio sources. Partially coherent sources are sources where the coherence time or coherence length are limited by bandwidth, by thermal noise,… … Wikipedia
Coherence (linguistics) — Coherence in linguistics is what makes a text semantically meaningful. It is especially dealt with in text linguistics. Coherence is achieved through syntactical features such as the use of deictic, anaphoric and cataphoric elements or a logical… … Wikipedia
Coherence (The philosophy of) — Green, Bosanquet and the philosophy of coherence Gerald F.Gaus INTRODUCTION Along with F.H.Bradley (Bradley, F.H.), T.H.Green and Bernard Bosanquet were the chief figures in what is commonly called British idealism. Bradley is widely regarded as… … History of philosophy
optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… … Universalium
David L. Fried — is a scientist, best known for his contributions to optics. Fried described what has come to be known as Fried s seeing diameter, or r0 (usually pronounced r naught). The seeing diameter is effectively a limiting aperture due to atmospheric… … Wikipedia
Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… … Wikipedia
sand dune — Hill, mound, or ridge of windblown sand or other loose material such as clay particles. Dunes are commonly associated with desert regions and seacoasts, and there are large areas of dunes in nonglacial parts of Antarctica. * * * Introduction any … Universalium
