An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 6 Search : characteristic
characteristic
  ۱) سرشتار؛ ۲) سرشتاری   
1) serežtâr; 2) serežtâri

Fr.: caractéristique   

1a ) A distinguishing feature or quality.
1b) The integer part of a → common logarithm. For example, log10 (23) = 1.362, where the characteristic is 1 and the → mantissa is 0.362.
2) Pertaining to, constituting, or indicating the character or peculiar quality of a person or thing; typical; distinctive.

character; → -istic.

characteristic age
  سن ِ سرشتاری   
senn-e sereštâri

Fr.: âge caractéristique   

Of a pulsar, a normalized period of rotation assumed to be a good approximation to pulsar's true age.

characteristic; → age.

characteristic curve
  خم ِ سرشتاری   
xam-e sereštâri

Fr.: courbe caractéristique   

Graph representing an optical film's response to the amount of light falling on it.

characteristic; → curve.

characteristic equation
  هموگش ِ سرشتاری   
hamugeš-e sereštâri

Fr.: équation caractéristique   

Physics: An analytical relationship between a set of physical variables that determines the state of a physical system.
Math.: The equation which is solved to find a matrix's eigenvalues, also called the characteristic polynomial.

characteristic; → equation.

characteristic mass
  جرم ِ سرشتاری   
jerm-e sereštâri

Fr.: masse caractéristique   

A typical or most likely mass for the formation of an astronomical object. In current star formation models, it is of order of a few tenths of a → solar mass.

characteristic; → mass.

characteristic thermal energy
  کاروژ ِ گرمایی ِ سرشتاری   
kâruž-e garmâyi-ye sereštâri

Fr.: énergie thermique caractéristique   

The quantity kT in the → Maxwell-Boltzmann distribution law, where k is → Boltzmann's constant and T the gas temperature. See also → thermal energy.

characteristic; → thermal; → energy