Heat up a long nail. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Heat up a long nail. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Hammer a nail into a thick chock and place it on a baking sheet, as shown in the picture. From below, stick a few small carnations with stearin or wax to this long nail. Place a burning candle under the head of the nail. Look: one carnation has fallen off... another... a third... Strictly in order, one by one. First closest to the fire, then further, further ...

This means that heat is transferred along the nail from the heated end to the cold end. And it is transmitted gradually.

Heat up a long nail

When the nail has cooled, pull it out and insert a splinter into the remaining hole. Repeat the same experience with her. The picture will be completely different! The end of the splinter will light up, but the carnations will still hold on. It turns out that wood conducts heat much worse than iron.

If you have a glass rod or tube of suitable thickness, repeat the experiment with it. Of course, it does not burn, but it conducts heat no better than wood.

Author: Galpershtein L.Ya.

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