Storyclover
Storyclover
On a bright Saturday morning, Mina set a red horseshoe magnet beside a steel nail and a polished spoon on the kitchen table. She wanted to know why one might answer the magnet while the other seemed not to hear it.
Why Does a Magnet Pull a Nail but Ignore a Spoon?Magnets strongly attract materials whose atoms can line up their tiny magnetic fields, while many metals do not respond the same way.
1. On a bright Saturday morning, Mina set a red horseshoe magnet beside a steel nail and a polished spoon on the kitchen table. She wanted to know why one might answer the magnet while the other seemed not to hear it.
2. She nudged the magnet toward the nail. The nail slid across the wood and settled against it, but the spoon stayed shining in its place.
3. Mina tried the spoon from its handle, its bowl, and the other side. She turned the magnet around, too. Nothing changed: the spoon remained stubbornly still.
4. Maybe the magnet liked only certain shapes, Mina thought. She placed a steel paper clip, a copper coin, a strip of aluminum foil, and a second nail beside the spoon.
5. The paper clip and second nail joined the first nail at the magnet. The copper coin and aluminum foil did not, and the spoon kept its quiet shine.
6. The answer was hiding below the size of a speck. In iron and many kinds of steel, atoms act like tiny magnets whose fields can line up together. When enough of them point the same way, their small pulls add up.
7. Many spoons are made from stainless steel. In that material, the atoms' tiny magnetic fields do not line up into a strong pull, even though the spoon is still metal. Mina looked from the bright bowl to the plain steel nail.
8. She placed the magnet beside both objects one last time. The nail came close; the spoon did not. Mina finally had her answer: magnets strongly attract materials whose atoms can line up their tiny magnetic fields, while many metals do not respond the same way.
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