Coherence time — For an electromagnetic wave, the coherence time is the time over which a propagating wave (especially a laser or maser beam) may be considered coherent. In other words, it is the time interval within which its phase is, on average, predictable.… … Wikipedia
coherence time — koherentiškumo trukmė statusas T sritis fizika atitikmenys: angl. coherence time vok. Kohärenzzeit, f rus. время когерентности, n pranc. temps de cohérence, m … Fizikos terminų žodynas
Coherence time (communications systems) — In communications systems, a communication channel may change with time. Coherence time is the time duration over which the channel impulse response is considered to be not varying. Such channel variation is much more significant in wireless… … 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 bandwidth — is a statistical measurement of the range of frequencies over which the channel can be considered flat , or in other words the approximate maximum bandwidth or frequency interval over which two frequencies of a signal are likely to experience… … Wikipedia
Coherence (physics) — In physics, coherence is a property of waves that enables stationary (i.e. temporally and spatially constant) interference. More generally, coherence describes all properties of the correlation between physical quantities of a wave. When… … Wikipedia
Coherence length — In physics, coherence length is the propagation distance from a coherent source to a point where an electromagnetic wave (or wave packet, wave function, etc.) maintains a specified degree of coherence. The significance is that interference will… … 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
Time-bin encoding — is a technique used in Quantum information science to encode a qubit of information on a photon. Quantum information science makes use of qubits as a basic resource similar to bits in classical computing. Qubits are any two level quantum… … 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
Coherence (signal processing) — Contents 1 Background 2 Definition and Formulation 3 Example 4 Extension to non stationary signals 5 … Wikipedia
монотонно зависит от запаздывания и расстояния между точками с координатами R1 и R1, то время когерентности τc, длину когерентности Δc, площадь когерентности Sc и объем когерентности Vc определяют по спаду степени взаимной когерентности 