rotation period
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Rotation period — The rotation period of an astronomical object is the time it takes to complete one revolution around its axis of rotation relative to the background stars. It differs from the planet s solar day, which includes an extra fractional rotation needed … Wikipedia
Rotation-powered pulsar — is one of the major classes of pulsars. A Rotation powered pulsar is a rapidly rotating neutron star, whose electromagnetic radiation is observed in regularly spaced intervals, or pulses . It differs from other types of pulsars in that the source … Wikipedia
Rotation in office — Rotation in office, or term limits, dates back to the American Revolution, and prior to that to the democracies and republics of antiquity. The council of 500 in ancient Athens rotated its entire membership annually, as did the ephorate in… … Wikipedia
Rotation — This article is about movement of a physical body. For other uses, see Rotation (disambiguation). A polyhedron resembling a sphere rotating around an axis. A rotation is a circular movement of an object around a center (or point) of rotation. A… … Wikipedia
Rotation around a fixed axis — Rotational motion can occur around more than one axis at once, and can involve phenomena such as wobbling and precession. Rotation around a fixed axis is a special case of rotational motion, which does not involve those phenomena. The kinematics… … Wikipedia
Rotation number — This article is about the rotation number, which is sometimes called the map winding number or simply winding number. There is another meaning for winding number, which appears in complex analysis. In mathematics, the rotation number is an… … Wikipedia
rotation — ro|ta|tion [rəuˈteıʃən US rou ] n 1.) [U] when something turns with a circular movement around a central point rotation of ▪ the rotation of the Earth on its axis rotation about/around ▪ the planet s rotation around the sun 2.) one complete… … Dictionary of contemporary English
period — /pear ee euhd/, n. 1. a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social… … Universalium
rotation — 1. Turning or movement of a body around its axis. 2. A recurrence in regular order of certain events, such as the symptoms of a periodic disease. 3. In medical education, a period of time on a particular service or specialty … Medical dictionary
rotation — /rəυ teɪʃ(ə)n/ noun the act of taking turns ♦ to fill the post of chairman by rotation to let each member of the group act as chairman for a period then give the post to another member ♦ two directors retire by rotation two directors retire… … Dictionary of banking and finance
