An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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tangential velocity
  تندای ِ سایانی  
tondâ-ye sâyâni
Fr.: vitesse tangentielle  

  1. The instantaneous linear velocity of a body moving in a circular path. It is equal to the → angular velocity multiplied by the radius: vt = ωr.

  2. The component of the velocity of an object, such as a star, that is at right-angles to the observer’s → line of sight; also known as transverse velocity. See also → radial velocity.

See also: → tangential; → velocity.