Light Changes a Magnet’s Polarity

ENN
Feb 3, 2026, 3:50 pm56 ptsTrending
In a ferromagnet, combined forces are at work. In order for a compass needle to point north or a fridge magnet to stick to the fridge door, countless electron spins inside them, each of which only creates a tiny magnetic field, all need to line up in the same direction.

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