Sticky, brightening, healing!
You remember these multi colored sticky magnets on the fridge? Inside the funny motives there are perhaps extra strong neodymium magnets? They are part of the many magnets which are everywhere in our daily life: in the home, in the car, on the bike. On the bike? Yes, inside the bike dynamo providing the electricity for your headlight! But as the dynamo rubbing agains the tire becomes rather irritating and annoying when you have to pedal uphill, clever Danish tinkerers have found a new smart solution: It’s called electromagnetic induction and a small magnet fixed at the spoke of the front wheel and another magnet fixed at the headlight. Both are flitting past each other, and …
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5. Juli 2013
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