The bench is covered in iron filings. Drag a magnet about and they draw the invisible shape that runs out of its north end and back into its south end.
Magnets
Tray
What sticks?
Tap a thing, then tap the bench to put it down.
Drag to move Β· grab an end to spin Β· arrows nudge Β· [ ] rotate Β· F flips Β· Delete removes
Tap the bar magnet in the tray, then tap the bench.
Watch what the little iron filings do the moment it lands.
Compass
Needle pointsβ
Pull herenone
vs Earth—
Drop the compass anywhere on the bench to measure the pull at that exact spot.
Try these
Show
Turn Earth on and the whole planet joins in β a very weak magnet, but it is everywhere. Turn Magnets move on and they are free to shove each other about.
Hi, I'm Max! π
Hey, I'm Max! This bench is covered in iron filings β thousands of tiny bits of iron, too small to pick up. On their own they just lie there. But put a magnet down and every single one of them turns to face the same invisible pattern, all at once. That pattern is called a magnetic field, and it is really there, all around the magnet, even when there is nothing to show it. Put two magnets near each other and try both ways round: red end facing blue end, then red facing red. One way they rush together. The other way they shove each other apart, and no matter what you do, you cannot make them touch. Then grab the paper clip, the penny, the key, and find out which ones jump β because "metal" and "magnetic" are not the same thing at all. Go on, put something down.