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nutation    
n. 垂头,下垂,俯下,章动

垂头,下垂,俯下,章动

nutation
n 1: uncontrolled nodding


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  • Nutation - Wikipedia
    Nutation (from Latin nūtātiō 'nodding, swaying') is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behaviour of a mechanism
  • Nutation | Definition, Causes, Period, Facts | Britannica
    Nutation, in astronomy, a small irregularity in the precession of the equinoxes Precession is the slow, toplike wobbling of the spinning Earth, with a period of about 25,772 years
  • 6. 8: Nutation - Physics LibreTexts
    Those who have studied the gyrations of a spinning top will recall that, in addition to precessing, a top may nutate, or nod up and down (Latin nutare, to nod), the amplitude and type of nutation depending on the initial conditions Earth’s axis does indeed nutate, but not from the same cause
  • Nutation and Precession | Earth
    Nutation and precession are the periodic and long-term motion of the Earth's spin axis in space The direction of the Earth's axis in space, shown in orange, changes over time with respect to extremely distant objects, such as quasars
  • What Is Nutation? A Simple Definition and Explanation
    Nutation is best described as a nodding or swaying motion of a spinning object’s axis of rotation When a body spins, its rotational axis does not always point in a fixed direction; instead, it undergoes a small, periodic oscillation
  • NUTATION Definition Meaning - Merriam-Webster
    More from Merriam-Webster on nutation Britannica com: Encyclopedia article about nutation Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged
  • What Is Nutation? Definition, Causes, and Types - ScienceInsights
    Nutation is a small, rhythmic wobble in the axis of a spinning object You’ll encounter the term most often in astronomy, where it describes a slight nodding motion of Earth’s rotational axis, but it also applies to gyroscopes, spinning tops, and even growing plants
  • What Is Nutation? - AllTheScience
    Nutation is a word derived from the Latin nutare meaning to nod It means a nodding, swaying, or rocking motion in an axis of rotation The rotation may be of a symmetrical object, such as a bullet in flight or a gyroscope
  • What Is Nutation? The Science of Earth’s Wobble
    Nutation describes an oscillating or nodding motion in the axis of rotation of a spinning object It represents a small, periodic oscillation superimposed upon a larger, more stable rotational movement
  • Mathieu Dumberry – Research page: nutations
    The forcing responsible for the nutation is known very precisely, and the response of the Earth is also observed with great precision Physical models of the internal coupling must be capable of reproducing the observed nutations when subjected to the known external torques





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