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As the disk rotates the plane of this cable is rotated at exactly half the rate of the disk so the cable experiences no net twisting. What makes the device possible is the peculiar connectivity of the space of 3D rotations , as discovered [ 3 ] by P. A. M. Dirac and illustrated in his Plate trick (also known as the string trick or belt trick ...
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A magnetic coupling is a component which transfers torque from one shaft to another using a magnetic field, rather than a physical mechanical connection. They are also known as magnetic drive couplings, magnetic shaft couplings, or magnetic disc couplings.
The diabolo is swung around in a large circle around both sticks, finishing with 2 twists of string above the diabolo. A sun in the opposite direction undoes this twist. There are many different types of suns; this is the most basic. Orbits/satellites: The diabolo orbits around a body part such as the leg or waist. Knot/magic knot
A magnetic needle is freely suspended on a pivot or string, a short distance above a copper disc. If the disk is stationary, the needle aligns itself with the Earth's magnetic field. If the disc is rotated in its own plane, the needle rotates in the same direction as the disc.
A magnetic switchable device (often called a magnetic base) is a magnetic fixture that uses one or more permanent magnets in a configuration that allows the external field to be turned on or off. They are used in many applications including optics , metalworking , lifting , and robotics, to attach items to metal surfaces in a secure but ...
A magnetic particle clutch is a special type of electromagnetic clutch which does not use friction plates. Instead, it uses a fine powder of magnetically susceptible material (typically stainless steel ) to mechanically link an otherwise free-wheeling disc attached to one shaft, to a rotor attached to the other shaft.
Flip-disc display elements (close up). The disc rotates on the shaft that is carried in the two triangular posts. The magnet that powers the rotation can be seen embedded in the disc. Under the disc is the driving solenoid; when powered, a field is induced into the two posts, flipping the discs. Rotation stops when the disc hits the post.
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