Archive for September, 2007

Magnet Ripple

Friday, September 28th, 2007

Why do fridge magnets ‘ripple’ when you rub them together?
Hint: Try taking another magnet and moving it slowly over the fridge magnet. Is it all magnetic? What pattern do the ‘magnetic bits’ form?
Solution: The magnetic sections are arranged in strips, with non-magnetic sections in between. When you line up a magnetic section […]