instantaneous intensity

См. также в других словарях:

• Intensity modulation — In optical communications, intensity modulation (IM) is a form of modulation in which the optical power output of a source is varied in accordance with some characteristic of the modulating signal. In intensity modulation, there are no discrete… …   Wikipedia

• Sound intensity — The sound intensity, I , (acoustic intensity) is defined as the sound power Pac per unit area A . The usual context is the noise measurement of sound intensity in the air at a listener s location. For instantaneous acoustic pressure p inst( t )… …   Wikipedia

• Gaussian beam — In optics, a Gaussian beam is a beam of electromagnetic radiation whose transverse electric field and intensity (irradiance) distributions are well approximated by Gaussian functions. Many lasers emit beams that approximate a Gaussian profile, in …   Wikipedia

• circular polarization — Optics. polarization in which the vector representing the instantaneous intensity of the electromagnetic field describes a circular helix in the direction of propagation. Cf. elliptical polarization. [1965 70] * * * …   Universalium

• elliptical polarization — Physics. polarization of an electromagnetic wave in which the vector representing the instantaneous intensity of the electric field describes an elliptical helix in the direction of propagation. Cf. circular polarization. * * * …   Universalium

• elliptical polarization — noun see polarization * * * Physics. polarization of an electromagnetic wave in which the vector representing the instantaneous intensity of the electric field describes an elliptical helix in the direction of propagation. Cf. circular… …   Useful english dictionary

• analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

• Sound pressure — Sound measurements Sound pressure p, SPL Particle velocity v, SVL Particle displacement ξ Sound intensity I, SIL Sound power Pac Sound power level SWL Sound energy Sound energy d …   Wikipedia

• Value (ethics) — For other uses, see Value (disambiguation). In ethics, value is a property of objects, including physical objects as well as abstract objects (e.g. actions), representing their degree of importance. Ethic value denotes something s degree of… …   Wikipedia

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• Value (philosophy) — Philosophic or ethic value is a property of objects, including physical objects as well as abstract objects (e.g. actions), representing their degree of importance. The study of it is included in value theory.An object with ethic or philosophic… …   Wikipedia