Baron Munchausen is spinning. Fun physical experience at home

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Baron Munchausen is spinning. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

You have, of course, read about the amazing adventures of Baron Munchausen. What happened to this famous liar! But the baron always found a way out.

Once he broke into an enemy fortress, but his horse was cut in half by a gate that had fallen down. Noticing the loss, the baron hurried off in search of the rear half of his steed. It turned out that she was grazing peacefully on the lawn. The resourceful baron did not lose his head here either. He instantly sewed both halves and galloped on on a completely whole horse!

Of course, this is a fairy tale, like all the stories of Baron Munchausen. But it is still possible to sew a horse, although not in reality, but in the picture. To do this, we will now make a toy with you. It has a very scientific name: thaumatrope. But the toy itself is quite simple. The thaumatrope has only three parts: a piece of cardboard and two strings. Only a thaumatrop with light cardboard does not work well. Cardboard should be as thick as possible, heavier. You can even take plywood and paste over it on both sides with white paper.

It is not easy to make a good drawing of a baron on horseback. Yes, and the holes for the rope must be pierced very accurately. Therefore, draw both sides of the cardboard with cells. First draw them on one side, and then, continuing the ends of the lines through the edges, draw them on the other. Then the cells on both sides will match. In the marked places, pierce the holes, thread the ropes through them and tie them. After stretching the ropes, twist them between your fingers back and forth. Tuamatrope should spin well. Now carefully transfer the drawing of the front half of the horse with the baron over the cells, and on the other side - the drawing of the back half of the horse. First, you only need to outline the drawings with a pencil and check whether the horse “grows together” correctly when the cardboard rotates. And only after fitting the drawings well, blacken them thickly. Spin the thaumatrope again. The cut horse of the baron grows together before our eyes!

Baron Munchausen is spinning

Why is it so? Our eye retains the impression of what we see. The horse's head is gone, but you keep "seeing" it for another tenth of a second. During this time, the thaumatrope will have time to show you the tail of the horse several times, then the head again. Therefore, it seems to you that you see the whole horse at once. The same property of the eye is used in film and television. They also show more than twenty still pictures every second. They merge in the eye, and we see, as it were, one moving image.

Baron Munchausen is spinning

With the help of a thaumatrope, you can not only "sew" a horse. You can put a bird in a cage, put a bouquet of flowers in a vase. Try to come up with some more pictures for the thaumatropes yourself and see if they turn out well.

Author: Galpershtein L.Ya.

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