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wave-measuring device

См. также в других словарях:

  • Measuring principle — A sender emits a wave which is scattered by an object. The backscattered part of the wave reaches a receiver: The measurement principle of sonar and radar devices …   Wikipedia

  • Coordinate-measuring machine — A coordinate measuring machine (CMM) is a device for measuring the physical geometrical characteristics of an object. This machine may be manually controlled by an operator or it may be computer controlled. Measurements are defined by a probe… …   Wikipedia

  • Millimeter wave scanner — Active millimeter wave technology Active Millimeter Wave Unit A millimeter wave scanner is a whole–body imaging device used for detecting ob …   Wikipedia

  • Gravitational wave — In physics, a gravitational wave is a fluctuation in the curvature of spacetime which propagates as a wave, traveling outward from a moving object or system of objects. Gravitational radiation is the energy transported by these waves. Important… …   Wikipedia

  • Residual-current device — A two pole residual current device A Residual Current Device is a generic term covering both RCCBs and RCBOs. A Residual Current Circuit Breaker (RCCB) is an electrical wiring device that disconnects a circuit whenever it detects that the… …   Wikipedia

  • T wave alternans — (TWA) is a periodic beat to beat variation in the amplitude or shape of the T wave in an electrocardiogram (ECG or EKG). T wave of ECG TWA was first described in 1908. At that time, only large variations ( macroscopic TWA) could be detected.… …   Wikipedia

  • Spring (device) — Helical or coil springs designed for tension Compression sp …   Wikipedia

  • quantum mechanics — quantum mechanical, adj. Physics. a theory of the mechanics of atoms, molecules, and other physical systems that are subject to the uncertainty principle. Abbr.: QM Cf. nonrelativistic quantum mechanics, relativistic quantum mechanics. [1920 25]… …   Universalium

  • History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   Wikipedia

  • Quantum decoherence — Quantum mechanics Uncertainty principle …   Wikipedia

  • acoustics — /euh kooh stiks/, n. 1. (used with a sing. v.) Physics. the branch of physics that deals with sound and sound waves. 2. (used with a pl. v.) the qualities or characteristics of a room, auditorium, stadium, etc., that determine the audibility or… …   Universalium

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