Cutting magnetic lines of force. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Cutting magnetic lines of force. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Tie a thread with a needle to some stick stuck in the vial. Tie the end of the thread that is threaded into the needle in a knot so that the thread does not jump out of the eye. Bring the needle to the magnet so that it, pulling the thread, is located horizontally, not reaching it at a distance of one centimeter.

Cutting magnetic lines of force

Now try to "cut" the magnetic lines of force that hold the needle in the air with a piece of paper. Do not touch the needles! The needle will continue to hang. Even cardboard, even coins cannot "cut" the magnetic lines. Only a knife or just a piece of tin can "cut" them, and the needle will fall. In fact, the lines, of course, are not cut at all, but, having entered iron or steel, they change their direction and do not reach the needle. The needle ceases to feel the action of force from the magnet and falls.

For this experiment, it would be necessary to have a strong magnet: then the needle would hang horizontally in the air. Of the "home" magnets for this and the next experiment, a magnetic soap dish or a magnet from an unnecessary loudspeaker is quite suitable.

Author: Rabiza F.V.

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