An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Number of Results: 13 Search : vapor
condensation of vapor
  چگالش ِ بخار   
cagâleš-e boxâr (#)

Fr.: condensation de vapeur   

Change of vapor into liquid. It takes place when the pressure of the vapor becomes equal to the maximum vapor pressure of the liquid at that temperature.

condensation; → vapor.

evaporate
  بخاریدن؛ بخاراندن   
boxâridan; boxârândan

Fr.: évaporer   

(v.intr.) To change from liquid state into vapor; (v.tr.) To convert into a gaseous state or vapor.

Verbal form of → evaporation.

evaporation
  بخارش   
boxâreš

Fr.: évaporation   

The physical process by which a liquid is transformed to the gaseous state, usually by means of heat; the opposite of → condensation. Also called vaporization.

From L. evaporationem (nom. evaporatio), from evaporare "to disperse in vapor," from → ex- "out" + → vapor "steam."

Boxârš, verbal noun of boxâridan "to evaporate," from boxâr, → vapor.

grain evaporation
  بخارش ِ دانه   
boxâreš-e dâné

Fr.: évaporation des grains   

Conversion of dust grains into smaller grains due to high environmental temperatures.

grain; → evaporation.

heat of vaporization
  گرمای ِ بخارش   
garmâ-ye boxâreš

Fr.: chaleur de vaporisation   

The amount of heat energy required to transform an amount of a substance from the liquid phase to the gas phase. → molar heat of vaporization.

heat; → vaporization.

molar heat of vaporization
  گرمای ِ بخارش ِ مولی   
garmâ-ye boxâreš-e moli

Fr.: chaleur de vaporisation molaire   

The amount of heat energy required to vaporize 1 mole of a liquid at its → boiling point, usually expressed in kJ/mol.

molar; → heat; → vaporization.

photoevaporation
  شید-بخارش، نور-بخارش   
šidboxâreš, nurboxâreš

Fr.: photoévaporation   

A process going on in a molecular cloud surface whereby the surface material ionized by ultraviolet photons of neighboring stars is dissipated.

photo- + → evaporation.

saturated vapor
  بخار ِ انجالیده   
boxâr-e anjâlidé

Fr.: vapeur saturante   

A vapor at the pressure and temperature at which it can exist in dynamical equilibrium with its liquid. Any compression of its volume at constant temperature causes it to condense to liquid at a rate sufficient to maintain a constant pressure. The term "saturated" is a misnomer, since it does not have the same meaning as a → saturated solution in chemistry. There is no question of one substance being dissolved in another.

saturate; → vapor.

superheated vapor
  بخار ِ اَبَر-گرمیده   
boxâr-e abar-garmidé

Fr.: vapeur surchauffée   

A vapor that has been heated above its boiling point temperature corresponding to the pressure.

super-; → heat; → vapor.

vapor
  بخار   
boxâr (#)

Fr.: vapeur   

The gaseous form of substances that are normally in liquid or solid form.

M.E. vapour, L. vapor "exhalation, steam, heat," of unknown origin.

Boxâr, loan from Ar. buxâr.

vaporization
  بخارش   
boxâreš

Fr.: vaporisation, évaporation   

The act of vaporizing. The state of being vaporized.
The rapid change of water into steam.

Verbal noun of → vaporize.

vaporize
  ۱) بخاریدن؛ ۲) بخاراندن   
1) boxâridan; 2) boxârândan

Fr.: 1) s'évaporer; 2) évaporer   

1) To become converted into vapor.
2) To cause to change into a vapor.

vapor + → -ize.

water vapor
  بخار ِ آب   
boxâr-e âb (#)

Fr.: vapeur d'eau   

1) Water (H2O) in the gaseous state.
2) Meteo.: Atmospheric water in vapor form; one of the most important components of the → atmosphere.

water; → vapor.