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: 5 Search : polytropic
 polytropic   بُلگشتی   bolgaštiFr.: polytropique   1) Math.: Describing a function which has different values for one variable. 2) Thermodynamics: Pertaining to pressure and volume change that maintains specific heat. → polytropic process.→ poly- + → -tropic. polytropic change   دگرشد ِ بُلگشتی، دگرش ِ ~   degaršod-e bolgašti, degareš-e ~Fr.: changement polytropique   A change in the → pressure or → volume of a → gas in a → polytropic process.→ polytropic; → change. polytropic gas   گاز ِ بُلگشتی   gâz-e bolgaštiFr.: gaz polytropique   A gas capable of undergoing a → polytropic process.→ polytropic; → gas. polytropic index   دیشن ِ بُلگشت   dišan-e bolgaštFr.: index polytropique   A number appearing in the equation describing a → polytropic process. → polytropic; → index. polytropic process   فراروند ِ بُلگشتی   farâravand-e bolgaštiFr.: processus polytropique   A thermodynamic process that obeys the relation: PVn = C, where P is pressure, V is volume, n is any real number, called the → polytropic index, and C is a constant. If n = 0, then P = C and it is an → isobaric process. If n = 1, then for an → ideal gas PV = NkT = C and it is an → isothermal process. If n = γ, → adiabatic index, then for an ideal gas it is an → adiabatic process.→ polytropic; → process.