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Rotating spinner wheel. The modern spinner device is a decorative kinetic attachment to the wheel of an automobile. [19] The spinner covers the center of a car's wheel and is designed to independently rotate by using one or more roller bearings to isolate the spinner from the wheel, enabling it to turn while the wheel is at rest. [19]
It was debuted at the 1984 New Orleans World's Fair, under the name "Cyclo Tower". 2003 Disk'O: The Disk'O (also known as Skater or Surf's Up) is a type of flat ride manufactured by Zamperla of Italy. The ride is a larger version of a Rockin' Tug, also manufactured by Zamperla. c.1910 Devil's wheel: 1943 Double Shot: Drop tower
The Geneva drive or Geneva mechanism is a gear mechanism that translates a continuous rotation movement into intermittent rotary motion. The rotating drive wheel is usually equipped with a pin that reaches into a slot located in the other wheel (driven wheel) that advances it by one step at a time. The drive wheel also has an elevated circular ...
the great wheel also known as walking wheel or wool wheel for rapid long draw spinning of woolen-spun yarns; the flax wheel, which is a double-drive wheel used with a distaff for spinning flax fibres for making linen; saxony and upright wheels, all-purpose treadle driven wheels used to spin both woolen and worsted-spun yarns; and; the charkha ...
A traditional depiction of the chariot vision, based on the description in Ezekiel, with an opan on the left side. The ophanim (Hebrew: אוֹפַנִּים ʼōp̄annīm, ' wheels '; singular: אוֹפָן ʼōp̄ān), alternatively spelled auphanim or ofanim, and also called galgalim (Hebrew: גַּלְגַּלִּים galgallīm, ' spheres, wheels, whirlwinds '; singular: גַּלְגַּל ...
A throbber animation like that seen on many websites when a blocking action is being performed in the background. A throbber, also known as a loading icon, is an animated graphical control element used to show that a computer program is performing an action in the background (such as downloading content, conducting intensive calculations or communicating with an external device).
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 than the true rotation, it can appear stationary, or it can appear to rotate in the opposite direction from the true rotation ...
In medieval and ancient philosophy, the Wheel of Fortune or Rota Fortunae is a symbol of the capricious nature of Fate. The wheel belongs to the goddess Fortuna ( Greek equivalent: Tyche ) who spins it at random, changing the positions of those on the wheel: some suffer great misfortune, others gain windfalls.