An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Newton's cradle
  گهواره‌ی ِ نیوتون  
gahvâre-ye Newton
Fr.: pendule de Newton  

A device consisting of a series of equal → pendulums
in a row used to demonstrate the laws of → conservation of momentum and → conservation of energy.

See also: → Newton; → cradle.