英文字典,中文字典,查询,解释,review.php


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       


安装中文字典英文字典辞典工具!

安装中文字典英文字典辞典工具!










  • Earths rotation - Wikipedia
    Earth's rotation or Earth's spin is the rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space Earth rotates eastward, in prograde motion
  • Polar motion - Wikipedia
    This polar motion should not be confused with the changing direction of the Earth's rotation axis relative to the stars with different periods, caused mostly by the torques on the Geoid due to the gravitational attraction of the Moon and Sun They are also called nutations, except for the slowest, which is the precession of the equinoxes
  • Foucault pendulum - Wikipedia
    Foucault's pendulum in the Panthéon, Paris The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault, conceived as an experiment to demonstrate the Earth's rotation If a long and heavy pendulum suspended from the high roof above a circular area is monitored over an extended period of time, its plane of oscillation appears to change
  • Rotation - Wikipedia
    Rotation (angular displacement) of a planar figure around a point Rotational orbit v spin Relations between rotation axis, plane of orbit and axial tilt (for Earth) Mathematically, a rotation is a rigid body movement which, unlike a translation, keeps at least one point fixed This definition applies to rotations in two dimensions (in a plane), in which exactly one point is kept fixed; and
  • Chandler wobble - Wikipedia
    Chandler wobble The Chandler wobble or Chandler variation of latitude is a small deviation in the Earth 's axis of rotation relative to the solid earth, [1] which was discovered by and named after American astronomer Seth Carlo Chandler in 1891
  • Rotating reference frame - Wikipedia
    The time derivative of a position in a rotating reference frame has two components, one from the explicit time dependence due to motion of the object itself in the rotating reference frame, and another from the frame's own rotation
  • Axial precession - Wikipedia
    Precessional movement of Earth Earth rotates (white arrows) once a day around its rotational axis (red); this axis itself rotates slowly (white circle), completing a rotation in approximately 26,000 years [1] In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis In the absence of precession, the


















中文字典-英文字典  2005-2009