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: 3 Search : rigidity
magnetic rigidity
  سخت‌پایی ِ مغناتیسی   
saxtpâyi-ye meqnâtisi

Fr.: rigidité magnétique   

In → plasma physics, a → quantity that describes the → resistance of a → charged particle to change its direction of motion under the influence of a perpendicular → magnetic field. Rigidity is defined as: R = rLBc = (pc)/(Ze), where rL is the → Larmor radius, B is → magnetic induction, c is the → speed of light, p is the → momentum of the particle, Z is → atomic number, and e the → electron charge. Since pc has the dimensions of energy and e the dimensions of charge, rigidity has the dimensions of → volts (a 10 GeV proton has a rigidity of 10 GV). In → cosmic ray studies, the energies of cosmic rays are often quoted in terms of their rigidities, rather than their energies per nucleon.

magnetic; → rigidity.

modulus of rigidity
  پیمون ِ سخت‌پایی   
peymun-e saxtpâyi

Fr.: module de rigidité   

Same as → shear modulus.

modulus; → rigidity.

rigidity
  سخت‌پایی   
saxtpâyi

Fr.: rigidité   

1) The quality or state of being → rigid. See also → modulus of rigidity.
2) → magnetic rigidity.

rigid + → -ity.