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relative amplitude

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См. также в других словарях:

  • Amplitude-shift keying — (ASK) is a form of modulation that represents digital data as variations in the amplitude of a carrier wave.The amplitude of an analog carrier signal varies in accordance with the bit stream (modulating signal), keeping frequency and phase… …   Wikipedia

  • Amplitude-Comparison Monopulse — Amplitude monopulse direction finding refers to a common technique employed in radar systems to improve the accuracy with which the direction of arrival of a pulse can be estimated. Approach Two overlapping antenna beams are formed, which are… …   Wikipedia

  • Amplitude — is the magnitude of change in the oscillating variable, with each oscillation, within an oscillating system. For instance, sound waves are oscillations in atmospheric pressure and their amplitudes are proportional to the change in pressure during …   Wikipedia

  • Amplitude of accommodation — (AA) is a measurement of the eye’s ability to focus clearly on objects at near distances (i.e. accommodation). This eye focusing range for a child is usually about 5 ndash;7.5 cm (2 ndash;3 inches). For a young adult, it is 10 ndash;15 cm (4… …   Wikipedia

  • relative magnification factor — see amplitude ratio …   Mechanics glossary

  • Quadrature amplitude modulation — (QAM) (Pronounced IPA|kwa:m) is a modulation scheme which conveys data by changing ( modulating ) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature… …   Wikipedia

  • Pulse-amplitude modulation — Principle of PAM: (1) original signal, (2) PAM signal, (a) amplitude of signal, (b) time Pulse amplitude modulation, acronym PAM, is a form of signal modulation where the message information is encoded in the amplitude of a series of signal… …   Wikipedia

  • Scattering amplitude — The scattering amplitude describes the amplitude of an outgoing, elementary, spherical wave relative to a plane, incoming wave scattered on a point size particle. Since the spherical wave amplitude varies with frac{1}{R} (note, the intensity is… …   Wikipedia

  • Positive relative accommodation — (PRA) is a measure of the maximum ability to stimulate accommodation while maintaining clear, single binocular vision [http://www.vision therapy.com/Glossary of Terms.htm] . This measurement is typically obtained by an ophthalmologist or… …   Wikipedia

  • Electric sonic amplitude — is an electroacoustic phenomena that is reverse to colloid vibration current. It occurs in colloids, emulsions and other heterogeneous fluids under influence of oscillating electric field. This field moves particles relative to the liquid, which… …   Wikipedia

  • Negative relative accommodation — (NRA) was proposed by Prof. Joseph Kearney of Oxford University in 1967, is a measure of the maximum ability to relax accommodation while maintaining clear, single binocular vision.[1] This measurement is typically obtained by an orthoptist,… …   Wikipedia

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