It's not just about the coats. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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It's not just about the capes. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

If the only use capillarity there were water-repellent raincoats, it would not be worth talking about it so much. You can live without a raincoat!

Well, what about without bread? Without cereals, without vegetables and potatoes, without grass and trees? Without the meat of animals that would also have nothing to eat? You may ask: what does capillarity have to do with it? Yes, despite the fact that it is she who lifts nutritious juices from the soil to the very tops of the plants. It rises through the thinnest, microscopic channels in the bark of trees and shrubs, and in the stems of herbaceous plants. Sometimes it lifts many tens of meters - after all, there are trees of enormous height! But as soon as the ring of bark is torn off from such a giant, it will dry up above this place, deprived of the influx of moisture. I hope that you will not try this experiment.

Capillaries are also very important in the soil. If plowed fields are in danger of drought, the soil must be loosened. The capillaries will collapse, moisture will not rise from the depths and will remain in the soil.

That's the most important thing - capillarity.

Author: Galpershtein L.Ya.

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Cardio printer 09.01.2015

A technology for printing three-dimensional models of the heart has been created.

Until now, when preparing for the operation, we have been working with XNUMXD images of the heart created using tomography. Now times have changed and we have a powerful new research tool,” says Prof. Patricio Lancelotti, President of the European Cardiology Imaging Association.

In general, with modern technical capabilities, this is not so difficult, because the tomograph produces a series of two-dimensional sections of tissues and organs, and the methods for turning sets of such sections into three-dimensional models are well developed by the creators of software for designing parts. Now it has come to modeling living tissues. And to give the task to the printer to reproduce a three-dimensional model in plastic is not a problem at all.

Having received a plastic heart at its disposal, the shape is exactly the same as that in the patient’s chest, the cardiac surgeon can prepare in advance for the operation, choose an instrument and generally develop an action plan. And if necessary, carry out several preliminary operations and choose the best tactics.

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