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2. Rotation - Wikipedia

   en.wikipedia.org/wiki/Rotation

   Rotation. Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersecting anywhere inside or outside the figure at a center of rotation. A solid figure has an infinite number of ...

3. Solar rotation - Wikipedia

   en.wikipedia.org/wiki/Solar_rotation

   Solar rotation varies with latitude. The Sun is not a solid body, but is composed of a gaseous plasma. Different latitudes rotate at different periods. The source of this differential rotation is an area of current research in solar astronomy. [1] The rate of surface rotation is observed to be the fastest at the equator (latitude φ = 0°) and ...

4. Wagon-wheel effect - Wikipedia

   en.wikipedia.org/wiki/Wagon-wheel_effect

   Video of a spinning, patterned paper disc. At a certain speed the sets of spokes appear to slow and rotate in opposite directions. The wagon-wheel effect (alternatively called stagecoach-wheel effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel can appear to rotate more slowly ...

5. Earth's rotation - Wikipedia

   en.wikipedia.org/wiki/Earth's_rotation

   Earth's rotation. 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. As viewed from the northern polar star Polaris, Earth turns counterclockwise . The North Pole, also known as the Geographic North ...

6. 360-degree video - Wikipedia

   en.wikipedia.org/wiki/360-degree_video

   360-degree videos, also known as surround video, [1] or immersive videos [2] or spherical videos, [3] are video recordings where a view in every direction is recorded at the same time, shot using an omnidirectional camera or a collection of cameras. The term 360x180 can be used to indicate 360° of azimuth and 180° from nadir to zenith.

7. Autorotation - Wikipedia

   en.wikipedia.org/wiki/Autorotation

   Autorotation is a state of flight in which the main rotor system of a helicopter or other rotary-wing aircraft turns by the action of air moving up through the rotor, as with an autogyro, rather than engine power driving the rotor. [1] [2] [3] The term autorotation dates to a period of early helicopter development between 1915 and 1920, and ...

8. VLC media player - Wikipedia

   en.wikipedia.org/wiki/VLC_media_player

   VLC media player. VLC media player (previously the VideoLAN Client and commonly known as simply VLC) is a free and open-source, portable, cross-platform media player software and streaming media server developed by the VideoLAN project. VLC is available for desktop operating systems and mobile platforms, such as Android, iOS and iPadOS.

9. Rotation around a fixed axis - Wikipedia

   en.wikipedia.org/wiki/Rotation_around_a_fixed_axis

   v. t. e. Rotation around a fixed axis or axial rotation is a special case of rotational motion around an axis of rotation fixed, stationary, or static in three-dimensional space. This type of motion excludes the possibility of the instantaneous axis of rotation changing its orientation and cannot describe such phenomena as wobbling or precession.