An Etymological Dictionary of Astronomy and AstrophysicsEnglish-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 6 Search : compression
 compression   تنجش   tanješ (#)Fr.: compression   The act or process of compressing; the state of being compressed.Verbal noun from → compress. compression factor   کروند ِ تنجش   karvand-e tanješFr.: facteur de compression   In thermodynamics, the quantity Z = pVm/RT, in which P is the gas pressure, Vm the molar volume, R the gas constant, and T the temperature. The compression factor is a measure of the deviation of a real gas from an ideal gas. For an ideal gas the compression factor is equal to 1.→ compression; → facteur. compression wave   موج ِ تنجش   mowj-e tanješFr.: onde de compression   A → longitudinal wave that compresses the → medium along the direction of → propagation, such as a → sound wave. Same as → compressional wave.→ compression; → wave. compressional   تنجشی   tanješi (#)Fr.: de compression   Of or relating to → compression.→ compression; → -al. compressional wave   موج ِ تنجشی   mowj-e tanješiFr.: onde de compression   An → elastic wave that travels through a → medium with the particles of the medium moving in the same direction as the wave propagation. The compressional wave is the wave that is primarily used in → seismic exploration. Also called P-wave, primary wave, pressure wave.→ compressional; → wave. decompression   واتنجش   vâtanješFr.: décompression   1) A gradual decrease in surrounding → pressure, especially the controlled decrease in pressure that divers undergo after working in deep water or breathing compressed air. 2) Computers: The restoration of compressed electronic data to their full size.→ de- + → compression.