All mysteries
Mystery #1Tier 2physics / magnets

Why does every magnet have two ends that behave in opposite ways?

Grab a bar magnet and one end tugs hard at a paperclip. Flip it round and the other end tugs just as hard, yet the two ends are not twins. Bring two magnets together and sometimes they leap into each other, sometimes they shove apart. Every magnet in the world, from a crane magnet to the speck inside a fridge sticker, has these two different ends, and never just one. Why?

Iron filings arranged in curved lines around a bar magnet, clustering thickly at the north and south ends
Photo: MikeRun, Vera Wurmsdobler · CC BY-SA 4.0 · via Wikimedia Commons

Your guess

What's your hunch? Why does a magnet always seem to have two different ends?

There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.

Make a guess to unlock the hints and the answer.