If you ever wondered why the lightning fast thunder, it's time to learn about the importance of the speed of sound.The fact that this parameter is not constant as it depends on the propagation conditions.However, to know what the speed of sound, is not so difficult.
Everyone knows that we hear vibrations in the air.The latter refers to a mixture of substances, which is dominated by oxygen.There are special tables that indicate the values of the unknown quantities.For example, the answer to the question "What is the speed of sound in air" is almost always the same.This value ranges from 320 plus or minus 5 meters per second.In gases sound waves propagate more slowly than in solids and liquids.This is due solely to the distance between adjacent elements.It is understood that the molecule forms a volatile substance located at a relatively long distance between them.In order to transmit vibrations, it is necessary to come into contact with an amount of substance per cubic meter.The higher density of the body, the less energy is needed for the transmission of information from one particle to another.Now you know the answer to a question about what the speed of sound, is not on the surface.
fastest supplier of air signals is carbon.Eighteen kilometers per second can pass fluctuations in this environment.However, it is still slower than the propagation of light.For this reason, the thunder is heard after the lightning.By the way, what to know what the speed of sound?For example, on a cloudy day you can see the characteristic flash of light.To calculate how far the lightning struck, it is enough to count the time after the outbreak.Conventional long way to your ears can be calculated by the formula l = 300 * t, where l - the distance.But it is necessary to understand that, first, the sound comes out of the clouds.Therefore, relatively speaking, the waves reach the hypotenuse of a right triangle.Secondly, in such cases, in strong winds can occur as interference, and auxiliary openings for oscillatory processes.That is why this formula is highly generalized, but relatively helpful for fans of any calculations.
No less interesting is the question of what the speed of sound in the water?As has already been dealt with, it is higher than that of some gases.In ordinary sea salt, this quantity reaches 1500 m / c.If we take the distilled product which has a lower density, and then obtain the minimal value.The speed of sound in water can determine the distance to an approaching ship.During the war, submarines were guided by various sound waves in the marine environment.Sailors were able to calculate, for example, the depth of immersion and other settings.
So you got the answer to the question, what the speed of sound.In the most ordinary life, this value reaches approximately 300 m / c.But in science, for example physical chemistry invention in various devices to increase their internal sound velocity using different gases.That is why knowledge of this parameter is useful not only for solving school problems, but also with the more important matters.
