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  2. Earth's rotation - Wikipedia

    en.wikipedia.org/wiki/Earth's_rotation

    Earth's rotation axis moves with respect to the fixed stars (inertial space); the components of this motion are precession and nutation. It also moves with respect to Earth's crust; this is called polar motion. Precession is a rotation of Earth's rotation axis, caused primarily by external torques from the gravity of the Sun, Moon and other bodies.

  3. Polar motion - Wikipedia

    en.wikipedia.org/wiki/Polar_motion

    As in Figure 2, the result is the sum of a prograde and a retrograde circular polarized wave. For frequencies ν < 0.9 the retrograde wave can be neglected, and there remains the circular propagating prograde wave where the vector of polar motion moves on a circle in anti-clockwise direction. The magnitude of m becomes: [17]

  4. Clockwise - Wikipedia

    en.wikipedia.org/wiki/Clockwise

    For example, the daily rotation of the Earth is clockwise when viewed from above the South Pole, and counterclockwise when viewed from above the North Pole (considering "above a point" to be defined as "farther away from the center of earth and on the same ray"). The shadow of a horizontal sundial in the Northern Hemisphere rotates clockwise

  5. Rotation (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Rotation_(mathematics)

    Rotation can have a sign (as in the sign of an angle): a clockwise rotation is a negative magnitude so a counterclockwise turn has a positive magnitude. A rotation is different from other types of motions: translations , which have no fixed points, and (hyperplane) reflections , each of them having an entire ( n − 1) -dimensional flat of ...

  6. Coriolis force - Wikipedia

    en.wikipedia.org/wiki/Coriolis_force

    The rotation has caused the planet to settle on a spheroid shape, such that the normal force, the gravitational force and the centrifugal force exactly balance each other on a "horizontal" surface. (See equatorial bulge.) The Coriolis effect caused by the rotation of the Earth can be seen indirectly through the motion of a Foucault pendulum.

  7. Axial precession - Wikipedia

    en.wikipedia.org/wiki/Axial_precession

    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 ...

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    www.aol.com/finance/savings-interest-rates-today...

    Get today's best rates on high-yield and traditional savings accounts to more quickly grow your everyday nest egg.

  9. Rotating reference frame - Wikipedia

    en.wikipedia.org/wiki/Rotating_reference_frame

    Suppose the frames are aligned at = and the -axis is the axis of rotation. Then for a counterclockwise rotation through angle : ^ = (⁡ (), ⁡ ()) where the (,) components are expressed in the stationary frame.