A child in a carousel

[vladgladkikh]

A child holds a bar magnet and an electrically charged ball, and is spinning in a carousel.

The child in the carousel models an electron orbiting around a nucleus. The bar magnet models the electron’s spin. The electrically charged ball models the electron’s charge.

A magnetometer put in the center of the carousel also contains a magnet, so it models the nuclear magnetic moment which will interact with the orbital moment from the electrically charged ball and the bar magnet in the child’s hands.

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