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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 5 Search : proportional
multiwire proportional chamber
  اتاقک ِ بسیار-سیم ِ برپارشی   
otâqak-e besyâr-sim-e barpâreši

Fr.: chambre proportionnelle multifils   

Same as → Charpak's detector.

multi-; → wire; → proportional; → chamber.

proportional
  برپارشی   
barpâreši

Fr.: proportionnel   

Being in or characterized by proportion.
Math.: Of two quantities, having the same or a constant ratio or relation.

proportion + → -al.

proportional counter
  شمارگر ِ برپارشی   
šomârgar-e barpâreši

Fr.: compteur proportionnel   

A device in which an electronic detection system receives pulses that are proportional to the number of ions formed in a gas-filled tube by ionizing radiation.

proportional; → counter.

proportionality
  برپارشیگی   
barpârešigi

Fr.: proportionalité   

Math.: A relationship bewteen two quantities such that if one quantity changes the other changes in the same proportion; denoted as y ∝ x.

proportional + → -ity.

proportionality constant
  پایای ِ برپارشیگی   
pâyâ-ye barpârešigi

Fr.: constante de proportionalité   

Math.: A → constant that converts a proportionality into an → equation. Thus the proportionality constant k converts the proportionality y ∝ x into the equation y = kx.

proportionality + → constant.