An experiment at the fair?

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    Carlos M Fajardo Z
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    The experimental setup consists of the child sitting at the end of the carousel, holding both the magnet and the electrically charged ball. The magnetometer is placed in the center of the carousel, representing the nucleus. While the carousel is in motion, the magnetometer will measure the equivalent of the orbital contribution and the dipole spin contribution by the ball and the magnet, respectively. When it is not in motion, the contribution due to the ball becomes zero, generating a variation in the value measured by the magnetometer. Finally, the last measurement would be made by approaching the child with the magnet as close as possible to the magnetometer. Although the increase in the measured value would be due to the proximity of the magnet to the magnetometer, this would be the closest way to show the Fermi contact contribution in the macroscopic scale.

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