I remember playing with a magnet kit when I was a kid, and the horseshoe magnet had a "keeper" (a steel bar you stuck to the horseshoe when you weren't playing with it) which was supposed to make the magnet last longer. How does this work? Do magnetic domains reinforce each other better when they form "closed circuits?"
Ramin_HAL90013 karma
I remember playing with a magnet kit when I was a kid, and the horseshoe magnet had a "keeper" (a steel bar you stuck to the horseshoe when you weren't playing with it) which was supposed to make the magnet last longer. How does this work? Do magnetic domains reinforce each other better when they form "closed circuits?"
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