# 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: 67 Search : dynamic
 thermodynamic potential   توند ِ گرماتوانیک   tavand-e garmâtavânikFr.: potentiel thermodynaique   A measure of the energy level of a → thermodynamic system. It represents the amount of → work obtainable when the system undergoes a → change. The main types of thermodynamic potential are: → internal energy, → enthalpy, the → Helmholtz free energy, and the → Gibbs free energy. thermodynamic process   فراروند ِ گرماتوانیک   farâravand-e garmâtavânikFr.: processus thermodynamique   An ordered set of → equilibrium states undergone by a → thermodynamic system. Thermodynamics processes have various types: → cyclic process, → reversible process, and → irreversible process, → isothermal process, → adiabatic process, → isentropic process.→ thermodynamic; → process. thermodynamic system   راژمان ِ گرماتوانیک   râžmân-e garmâtavânikFr.: système thermodynamique   A quantity of substance or a working machine which in a well-defined way is set apart from its → environment. The boundary between the system and its surroundings can be real or an imaginary mathematical envelope. A thermodynamic system is not necessarily bound to a predefined geometry. Thermodynamic systems can be divided into three types: → open systems, → closed systems, and → isomated systems.→ thermodynamic; → system. thermodynamic temperature   دمای ِ گرماتوانیک   damâ-ye garmâtavânikFr.: température thermodynamique   A temperature scale, measured in → kelvin (K), that is related to the energy possessed by matter; it was formerly known as → absolute temperature. The zero point on the scale (0 K) is absolute zero. Thermodynamic temperature can be converted to temperature on the → Celsius scale by subtracting 273.15.→ thermodynamic; → temperature. thermodynamics   گرماتوانیک   garmâtavânikFr.: thermodynamique   A branch of physics concerned with the relations between heat and other forms of energy and how these affect temperature, pressure, volume, mechanical action, and work.→ thermo-; → dynamics, coined by the Scottish physicist William Thomson (Lord Kelvin, 1824-1907), in 1849. third law of thermodynamics   قانون ِ سوم ِ گرماتوانیک   qânun-e sevom-e garmâtavânikFr.: troisième loi de la thermodynamique   The → entropy of an idealized state of maximum order is zero at the temperature of → absolute zero. Another version of this law: As a system approaches absolute zero, all processes cease and the entropy of the system approaches a minimum value.→ third; → law; → thermodynamics. zeroth law of thermodynamics   قانون ِ صفرُم ِ گرماتوانیک   qânun-e sefrom-e garmâtavânikFr.: loi zéro de la thermodynamique   Two objects that are in → thermal equilibrium with a third object will be in thermal equilibrium with each other.→ zero; → law; → thermodynamics.

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