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2. Plate trick - Wikipedia

   en.wikipedia.org/wiki/Plate_trick

   In mathematics and physics, the plate trick, also known as Dirac's string trick (after Paul Dirac, who introduced and popularized it), [1] [2] the belt trick, or the Balinese cup trick (it appears in the Balinese candle dance), is any of several demonstrations of the idea that rotating an object with strings attached to it by 360 degrees does not return the system to its original state, while ...

3. Orientation entanglement - Wikipedia

   en.wikipedia.org/wiki/Orientation_entanglement

   As the coffee cup is rotated it carries the spinor, and its flag, along the strip. If the cup is rotated through 360°, the spinor returns to the initial position, but the flag is now underneath the strip, pointing outward. It takes another 360° rotation in order to return the flag to its original orientation.

4. Barlow's wheel - Wikipedia

   en.wikipedia.org/wiki/Barlow's_wheel

   The direction of rotation of the wheel can be determined by applying Fleming's left hand rule. While rotating and when a spoke of the wheel just leaves the mercury the circuit breaks but due to inertia of motion the wheel continues its motion and brings the next spoke in contact with the mercury thereby restoring the electrical contact.

5. Angular displacement - Wikipedia

   en.wikipedia.org/wiki/Angular_displacement

   The angular displacement (symbol θ, ϑ, or φ) – also called angle of rotation, rotational displacement, or rotary displacement – of a physical body is the angle (in units of radians, degrees, turns, etc.) through which the body rotates (revolves or spins) around a centre or axis of rotation.

6. Spin-1/2 - Wikipedia

   en.wikipedia.org/wiki/Spin-1/2

   In particular, if a beam of spin-oriented spin-⁠ 1 / 2 ⁠ particles is split, and just one of the beams is rotated about the axis of its direction of motion and then recombined with the original beam, different interference effects are observed depending on the angle of rotation. In the case of rotation by 360°, cancellation effects are ...

7. Trump tariffs on Canada imports could bring sharply higher ...

   www.aol.com/trump-tariffs-canada-imports-could...

   Donald Trump's proposed tariffs on Canada could increase U.S. gas prices by up to 70 cents a gallon, energy experts say.

8. Food poisoning is extremely common. But that doesn't ... - AOL

   www.aol.com/food-poisoning-extremely-common...

   Few things will put a damper on your vacation or holiday faster than food poisoning.The intense stomach pain, rushing to the toilet and feeling relegated to bed keeps just about everyone out of ...

9. Spinor - Wikipedia

   en.wikipedia.org/wiki/Spinor

   corresponds to a vector rotation through an angle θ about an axis defined by a unit vector v = a 1 σ 1 + a 2 σ 2 + a 3 σ 3. As a special case, it is easy to see that, if v = σ 3, this reproduces the σ 1 σ 2 rotation considered in the previous section; and that such rotation leaves the coefficients of vectors in the σ 3 direction ...