Precession refers to a change in the direction of the axis of a rotating object. Precession redirects here. ...

Precession may be used for:

• de Sitter precession is a general relativistic correction to the precession of a gyroscope near a large mass such as the Earth.
• Larmor precession is the precession of the magnetic moments of electrons, atomic nuclei, and atoms about an external magnetic field.
• Lense-Thirring precession is a general relativistic correction to the precession of a gyroscope near a large rotating mass such as the Earth.
• Precession (astronomy) redirected from precession of the equinoxes.
• Precession (mechanical) is the process of one part rotating with respect to another due to fretting between the two.
• Thomas precession is a special relativistic correction to the precession of a gyroscope in a rotating non-inertial frame.

This article does not cite any references or sources. ... Larmor precession refers to the precession of the magnetic moments of electrons or atomic nucleii in atoms around the direction of an external magnetic field. ... This article does not cite any references or sources. ... The precession of Earths axis of rotation with respect to inertial space is also called the precession of the equinoxes. ... Thomas precession, named after L.H. Thomas, is a correction to the spin-orbit interaction in Quantum Mechanics, which takes into account the relativistic time dilation between the electron and the nucleus in hydrogenic atoms. ...

See also

• Axial tilt, also called axial inclination or obliquity, is the inclination angle of a planet's rotational axis in relation to a perpendicular to its orbital plane.
• Conventional International Origin is a conventionally defined reference axis of the pole's average location over the year 1900.
• Great year, also known as a Platonic year or Equinoctial cycle, is the time required for one complete cycle of the precession of the equinoxes.
• Nutation is a slight irregular motion (etymologically a "nodding") in the axis of rotation of a largely axially symmetric object.
• Polar motion is the movement of Earth's rotation axis across its surface.

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