Rotation (disambiguation)
Encyclopedia
The term rotation can be used in several ways and includes various topics. Generally, it is used to denote (in 3D) the rotation
of movement of a rigid body
in such a way that any given point of that body remains at a constant distance from some fixed line (in 2D: point).
More specifically, it is applicable to:
In physics:
In geometry and mathematics:
In music:
Other:
Rotation
A rotation is a circular movement of an object around a center of rotation. A three-dimensional object rotates always around an imaginary line called a rotation axis. If the axis is within the body, and passes through its center of mass the body is said to rotate upon itself, or spin. A rotation...
of movement of a rigid body
Rigid body
In physics, a rigid body is an idealization of a solid body of finite size in which deformation is neglected. In other words, the distance between any two given points of a rigid body remains constant in time regardless of external forces exerted on it...
in such a way that any given point of that body remains at a constant distance from some fixed line (in 2D: point).
More specifically, it is applicable to:
- Crop rotationCrop rotationCrop rotation is the practice of growing a series of dissimilar types of crops in the same area in sequential seasons.Crop rotation confers various benefits to the soil. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals...
, a farming practice - Job rotationJob rotation-Introduction:Job rotation is a management technique that assigns trainees to various jobs and departments over a period of a few years. Surveys show that an increasing number of companies are using job rotation to train employees...
, a business management approach - Stock rotationStock rotationStock rotation is the practice, used in hospitality and retail, especially in food stores such as restaurants and supermarkets, of moving products with an earlier sell-by date to the front of a shelf , so they get picked up and sold first, and of moving products with a later sell-by date to the...
, a retail practice
In physics:
- Differential rotationDifferential rotationDifferential rotation is seen when different parts of a rotating object move with different angular velocities at different latitudes and/or depths of the body and/or in time. This indicates that the object is not solid. In fluid objects, such as accretion disks, this leads to shearing...
of objects - Optical rotationOptical rotationOptical rotation is the turning of the plane of linearly polarized light about the direction of motion as the light travels through certain materials. It occurs in solutions of chiral molecules such as sucrose , solids with rotated crystal planes such as quartz, and spin-polarized gases of atoms...
polarization - Rotational spectroscopyRotational spectroscopyRotational spectroscopy or microwave spectroscopy studies the absorption and emission of electromagnetic radiation by molecules associated with a corresponding change in the rotational quantum number of the molecule...
In geometry and mathematics:
- Rotation (mathematics)Rotation (mathematics)In geometry and linear algebra, a rotation is a transformation in a plane or in space that describes the motion of a rigid body around a fixed point. A rotation is different from a translation, which has no fixed points, and from a reflection, which "flips" the bodies it is transforming...
- Rotation around a fixed axisRotation around a fixed axisRotation around a fixed axis is a special case of rotational motion. The fixed axis hypothesis exclude the possibility of a moving axis, and cannot describe such phenomena as wobbling or precession. According to Euler's rotation theorem, simultaneous rotation around more than one axis at the same...
, a subset of rotation with more constraints
- Rotation around a fixed axis
- Rotation groupRotation groupIn mechanics and geometry, the rotation group is the group of all rotations about the origin of three-dimensional Euclidean space R3 under the operation of composition. By definition, a rotation about the origin is a linear transformation that preserves length of vectors and preserves orientation ...
- Coordinate rotation, the transformation of coordinate systems
- Improper rotationImproper rotationIn 3D geometry, an improper rotation, also called rotoreflection or rotary reflection is, depending on context, a linear transformation or affine transformation which is the combination of a rotation about an axis and a reflection in a plane perpendicular to the axis.Equivalently it is the...
producing an inversion - The curl of a vector field
- Bitwise rotation, a mathematical operator on bit patterns
In music:
- Rotation (music), a term referring to the frequency of airplay of a particular song
- Rotation (album)Rotation (album)Rotation is the second studio album by powerpop band Cute Is What We Aim For, released on June 24, 2008. It debuted at #21 on the U.S. Billboard 200 albums chart selling around 22,000 copies...
, Cute Is What We Aim For's second studio album. - Rotate (song)Rotate (song)"Rotate" is the lead single from Capone-N-Noreaga's third studio album Channel 10 The song features Busta Rhymes and Ron Browz and is produced by the latter. It is Capone and Noreaga's first single together in nine years.-Remixes & freestyles:...
, a song off Capone-N-Noreaga's third album Channel 10.
Other:
- Rotation (film)Rotation (film)Rotation is a 1949 film directed by Wolfgang Staudte and produced under the auspices of Deutsche Film-Aktiengesellschaft in East Germany...
, the film of that name. - Rotation (pool), a type of pocket billiards game
- In baseball pitching, the rotation is the group of starting pitchers for a team, and the order in which they pitch
- Robson RotationRobson RotationRobson Rotation is the method of printing multiple ballots for single transferable vote elections, with each having the candidates listed in a different order....
, the practice of printing multiple ballots for an election, each having the candidates listed in a different order - Clerkship (medicine), also known as a rotation, referring in medical education to the later part of training where students spend time in a hospital environment, as opposed to receiving classroom instruction
- Rotation (aviation)Rotation (aviation)In aviation, rotation refers to the action of applying back pressure to a control device, such as a yoke, side-stick or centre stick, to lift the nose wheel off the ground during the takeoff roll...
refers to the act of lifting the nose off the runway during takeoffTakeoffTakeoff is the phase of flight in which an aerospace vehicle goes from the ground to flying in the air.For horizontal takeoff aircraft this usually involves starting with a transition from moving along the ground on a runway. For balloons, helicopters and some specialized fixed-wing aircraft , no... - Display rotation, for the orientation of a page on the display device of a computer