Properties of sand: mechanical, chemical and therapeutic

One of the most amazing materials on the planet – is sand. The properties of sand, despite its apparent simplicity, is quite interesting and practically any other substance in the world can show nothing similar.

The Uniformity of rashes

Nothing poured as evenly as the sand. The properties of sand allows this material to always pour from the same hole with exactly the same speed. That's why he was taken as a basic element for operation. There were other variations that run on water and other materials, but only the hourglass is always the same, it started to show the exact time. As an example you can imagine a funnel, into which poured, for example, a kilogram of sand. You can measure the time while he gets plenty of sleep and try now pour not one kilogram, and ton. Speed does not increase, despite a significant increase in pressure. Of course, this requires that the sand was homogeneous, and at least relatively the same, but it is in most cases not too much different.

Permeability to water

The Ability to pass water – this is another useful mechanical property of sand. Sand, which is typical, consists of fine particles between which there is enough free space, so that the water could seep. The larger sandy “pieces”, the higher the velocity of the fluid flow. Interesting in this case is the fact that simultaneously with the passage of water, sand manages to keep all other impurities and thereby performs filter operation. Virtually all products for the cleaning fluid to work on such a scheme. At the same time, the more sand is without movement, the more it is compressed and gradually loses this property.

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The Sand is not compacted

KMail could not compress the sand. The properties of the sand such that it always retains the same form. Of course, as already mentioned, it is compressed and partially loses in volume, but it's a natural process, which eventually ends, and then squeeze the sand will already be impossible. Separately can be said about another mechanical property that logically comes out of that. The sand distributes all accept the pressure evenly in all directions. For example, if you take sand and pour it into any jar, after subsequent pressure he will pass it on not only the bottom but also on the walls. The mechanical properties of the sand are often used by builders. This quality makes it universal.

Chemical properties of sand

These include the resistance of the material to most types of external aggressive impact.

• Has acid resistance. The sand is fairly inert refers to acids, alkalis and other similar substances. That is why it is used to create special types of concrete that can resist destructive influence. In turn, this building material is used in industrial production and in all other cases when buildings require maximum resistance to anything.
• Fire retardant. Up to a temperature of 550 degrees Celsius it does not change. What properties of sand are shown above this indicator can tell the glass, since this material is used to create any Windows.
• Frost. The substance is very good shows itself at low temperatures. Properties are not changed. Example of application in cold weather, you can consider sanding the sidewalks and roads. This material in this use case provides better grip to the shoes of pedestrians or the wheels of cars with the surface, helping to avoid injuries and accidents.

Depending on the form of sand, from its origin, it can have other amazing chemical properties. For example, there is the so-called singing sand, which begins to make strange noises if it is disturbed. It's literally a mystical peculiarity that modern science cannot yet understand, because the same sand in the laboratory does not sound and composition is no different from other counterparts.

Healing properties

From the point of view of medicine, the main properties of the sand is uniform the heat and sharp edges. On such characteristics of this material were known before our era, but only in 1889 the doctor Parijskij N. V. was gathered scientific basis and evidence, allowed to implement the treatment of sand as auxiliary procedures.

The point is that after heating the sand to give off heat with the same intensity for a long time that allows you to evenly warm up a sore spot (especially important for combating diseases of the joints). At the same time, the sand itself has a relatively ribbed surface, which further provides easy micro-massage, which reproduce by other methods is virtually impossible.

Summary

Sand is widely used in most areashuman activities. He heals, saves, is an integral part of most building materials and he is very cheap. Sand on the planet a lot and its number is constantly growing, because it is the result of destruction of mountain ranges, and this is an ongoing process and there is no stopping it. A few years ago appeared the idea of creating even the engines on the basis of this material, and the results were astounding. Efficiency was almost 100% and the only problem has been the rapid wear of parts with which modern science can not yet handle.