A theoretical physicist demonstrates an eye-like object floating gently beneath her hand, while musicians play an unusual tune. If you look closely, you'll notice that her earrings include a long straight coil of wire that can be used to generate a nearly uniform magnetic field similar to that of a bar magnet. Such coils, called solenoids, have an enormous number of practical applications.

We will never meet this woman, never call her name, never be able to ask her if she is truly happy.

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