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precession of the equinoxes, motion of the equinoxes along the ecliptic (the plane of Earth’s orbit) caused by the cyclic precession of Earth’s axis of rotation.. In compiling his famous star catalog (completed in 129 bce), the Greek astronomer Hipparchus noticed that the positions of the stars were shifted in a systematic way from earlier Babylonian (Chaldean) measures.
27 de feb. de 2020 · There’s also apsidal precession. Not only does Earth wobble on its rotational axis, but Earth’s entire orbital ellipse – that is, the oval-shaped path Earth follows in its orbit around the Sun — also wobbles irregularly, primarily due to its interactions with Jupiter and Saturn. The cycle of apsidal precession spans about 112,000 years.
28 de abr. de 2020 · Ainsi, elles engendrent un déplacement de l'axe de rotation de la Terre, c'est ce qu'on appelle la précession des équinoxes. Ce phénomène de rotation de l'axe terrestre est à l'origine d'un ...
進動 （precession）是 自轉 物體之自轉軸又繞著另一軸旋轉的現象，又可稱作 旋進 。. 在 天文學 上，又稱為“ 歲差 現象”。. 常見的例子為 陀螺 。. 當其自轉軸的軸線不再呈 鉛直 時，即自转轴与对称轴不重合不平行时，會發現自轉軸會沿著鉛直線作旋轉，此 ...
8 de feb. de 2019 · Precession Intuitively Explained. Péter Hantz 1* Zsolt I. Lázár 2. 1 Department of Laboratory Medicine, Medical School, University of Pécs, Pécs, Hungary. 2 Faculty of Physics, Babes-Bolyai University, Cluj-Napoca, Romania. Formal explanations of the dynamics of free and heavy tops are considered to be known for centuries.
Precession can be a complicated business. If you do further research you will find some of these listed as lunisolar precession, planetary precession and precession of the ecliptic. There are also two other factors regarding Earth’s tilt called nutation and polar motion. You can find out about these too. For a laugh.
2 de jun. de 2012 · 進動（precession）是自轉物體之自轉軸又繞著另一軸旋轉的現象，又可稱作旋進。. 在天文學上，又稱為「歲差現象」。. 常見的例子為陀螺。. 當其自轉軸的軸線不再呈鉛直時，會發現自轉軸會沿著鉛直線作旋轉，此即「旋進」現象。. 另外的例子是地球的自轉 ...
