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  • Rotation - Wikipedia
    A rotation around an axis completely external to the moving body is called a revolution (or orbit), e g Earth's orbit around the Sun The ends of the external axis of revolution can be called the orbital poles
  • 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
  • Solid of revolution - Wikipedia
    The surface created by this revolution and which bounds the solid is the surface of revolution Assuming that the curve does not cross the axis, the solid's volume is equal to the length of the circle described by the figure's centroid multiplied by the figure's area (Pappus's second centroid theorem)
  • Surface of revolution - Wikipedia
    A surface of revolution is a surface in Euclidean space created by rotating a curve (the generatrix) one full revolution around an axis of rotation (normally not intersecting the generatrix, except at its endpoints) [1] The volume bounded by the surface created by this revolution is the solid of revolution
  • Rotational frequency - Wikipedia
    Rotational frequency, also known as rotational speed or rate of rotation (symbols ν, lowercase Greek nu, and also n), is the frequency of rotation of an object around an axis
  • Rotations in 4-dimensional Euclidean space - Wikipedia
    In mathematics, the group of rotations about a fixed point in four-dimensional Euclidean space is denoted SO (4) The name comes from the fact that it is the special orthogonal group of order 4 In this article rotation means rotational displacement For the sake of uniqueness, rotation angles are assumed to be in the segment [0, π] except where mentioned or clearly implied by the context
  • Retrograde and prograde motion - Wikipedia
    Retrograde and prograde motion Retrograde orbit: the satellite (red) orbits in the direction opposite to the rotation of its primary (blue black) Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object (right figure)
  • Orbital period - Wikipedia
    The orbital period (also revolution period) is the amount of time a given astronomical object takes to complete one orbit around another object In astronomy, it usually applies to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars It may also refer to the time it takes a satellite orbiting a planet or moon to complete one orbit





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