How do we manage to maintain balance? Detailed answer

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How do we manage to maintain balance? Detailed answer

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How do we manage to maintain balance?

One of the most amazing skills that can be learned is our ability to stand or walk. It is indeed a skill and can be mastered. If an alien from another planet, who himself walks on four legs, looked at us, he would be amazed at how we manage to do this. If he tried to do it, it would take him a long time to learn it, just as it took us a fair amount of time to do it when we were small.

When you stand still, you are making constant moves to maintain your balance. You shift from foot to foot, you use pressure on your joints, and your muscles tell your body how to behave. Just keeping our balance while standing still requires the work of about three hundred muscles! That's why we get tired when we stand. Our muscles don't stop working.

Indeed, standing is also work! When walking, we use not only balance skills to help us, but also two natural forces. The first is air pressure. Our femur fits so tightly into the socket of the pelvic joint that a kind of vacuum forms. The air pressure on our feet helps to hold them securely in the joints. The same air pressure allows the leg to hold on to weight. The second natural force that we also use when walking is gravity. After our muscles tighten the leg, the force of gravity causes it to lower and make pendulum movements.

When you see a circus performer walking a tightrope with balance, remember that he is only doing a more difficult version of what you have to do every day. And just like you, he has to learn it and train for a very long time!

Author: Likum A.

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Scientists from the University of Southampton have found that microscopic manipulation of the surface structure of gold can change its color.

It turns out that thanks to milling using a focused ion beam on the metal surface, it is possible to create nanoscale patterns that have the properties of metamaterials. Scientists managed to form a special pattern on a gold substrate, which changed the reflective properties of gold and visually changed its color. Thus, it is now possible to create red and even green gold. Moreover, this technology is applicable to other metals such as silver and aluminum. This is a completely new approach to painting metals, which does not require the use of carcinogenic dyes.

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