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2. 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 ...

3. List of online video platforms - Wikipedia

   en.wikipedia.org/wiki/List_of_online_video_platforms

   Online video platforms allow users to upload, share videos or live stream their own videos to the Internet. These can either be for the general public to watch, or particular users on a shared network. The most popular video hosting website is YouTube, 2 billion active until October 2020 and the most extensive catalog of online videos. [1]

4. 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 ...

5. Quaternions and spatial rotation - Wikipedia

   en.wikipedia.org/wiki/Quaternions_and_spatial...

   3D visualization of a sphere and a rotation about an Euler axis (^) by an angle of In 3-dimensional space, according to Euler's rotation theorem, any rotation or sequence of rotations of a rigid body or coordinate system about a fixed point is equivalent to a single rotation by a given angle about a fixed axis (called the Euler axis) that runs through the fixed point.

6. 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.

7. Rotating wheel space station - Wikipedia

   en.wikipedia.org/wiki/Rotating_wheel_space_station

   2019: The video game Outer Wilds features multiple: the base game contains a rotating gravity wheel inside of a planet to maintain a gravitational pull within the planet's center. The 2021 DLC Echoes of the Eye features a planet-sized wheel-shaped space station that rotates to create artificial gravity.