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Dynamic physics lights a bicycle's path

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A few months ago, my physics teacher asked my group to make a dynamo for a bicycle so that when you pedal the wheels, some small bulbs light up. A dynamo is a small generator made from a magnet that is rotated in the middle of coils of wire.

At first, I didn't think it was possible. We gave it a try but the wire we used was not thin enough.

However, it is possible. I fixed the problems and my bicycle dynamo produced voltage. It gave me great satisfaction and let me know that even though things might seem impossible, one can find a solution.

SAM

STFA Tam Pak Yu College

Thanks for your letter, Sam. And congratulations on your invention! Problem-solving can be very satisfying. What you did involved technical skills as well as the ability to think creatively. Well done.

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