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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 ...
A G-Turn is a Nose Manual, but without facing the riding direction. The rider increases speed, then places the front foot on the nose while keeping the back foot over the back wheels. While riding, the board tends to turn frontside or backside, ending with a spin. Variations: One-Wheeled, Backward, Hang Ten (two feet on the nose)
Like wheels, bushings are available with different levels of hardness. The kingpin nut may be tightened or loosened to adjust the turning radius and response of the truck itself. Tighter bushings mean stiffer trucks and less chance of "wheel bite", where the wheel makes contact with the deck, damaging the deck and slowing or stopping the wheels.
A varial flip is a type of skateboarding trick in which the skateboard rotates around its vertical axis, or its vertical axis and its horizontal axis simultaneously. The first flip trick, called a kickflip but originally known as a "magic flip", was invented by professional skateboarder Rodney Mullen.
Propeller walk (also known as propeller effect, wheeling effect, paddle wheel effect, asymmetric thrust, asymmetric blade effect, transverse thrust, prop walk) is the term for a propeller's tendency to rotate about a vertical axis (also known as yaw motion). The rotation is in addition to the forward or backward acceleration.
The ride operator activated an emergency stop, but it didn’t work, park officials told a news outlet.
This swimming style has the advantage of easy breathing, but the disadvantage of swimmers not being able to see where they are going. It also has a different start from the other three competition swimming styles. The swimming style is similar to an upside down front crawl or freestyle. Both backstroke and front crawl are long-axis strokes.
Footage captures the moment fairgoers in Florida were stuck upside-down on a Ferris wheel ride that malfunctioned. The attraction, which features enclosed carriages that swing and flip, slowed ...