An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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natural frequency
  بسامد ِ زاستاری  
basâmad-e zâstâri
Fr.: fréquence naturelle  

Any frequency of small-amplitude oscillation for a system with a position of stable equilibrium and in the absence of external forces. In other words, the frequency of → free oscillation. Also called characteristic frequency.

See also: → natural; → frequency.