Inertia does not come down only to its mechanical manifestations. All real surely resists any influences, otherwise the world will not be able to exist. Visible manifestations of inertia can not be, but it does not vanish anywhere and never.
Instruction
1.
Inertia – it is very simple?
In Latin inertia is laziness, stagnancy, inaction, a lezhebochestvo. From it in school physics the inertia is understood as ability of physical bodies to resist any change of their speed. If the body is based and its speed is equal to zero – as certain "unwillingness" of a body to move a little. The ability of a body to resist mechanical influence, his "laziness", is expressed by special characteristic – weight. It is more difficult to get rid of the heavy sluggard on a floor and to force to move, than lean. "School" inertia well shows the experiment shown in the drawing. If to pull sharply, the lower thread is always torn – inertia of a heavy ball does not allow it to move a little considerably during breakthrough. And if to delay smaller force, but smoothly, then the top thread as it is pulled by not only force of a hand, but also ball weight is always torn. The body resists influence with some force, it also is inertia force. The sluggard will not allow to pull together just like that himself on a floor, he is reluctant. In classical physics inertia, or inertness, and inertia force one and too – the body resistance force to influence. "Inertia" speak just brevity for the sake of. From here a simple conclusion follows: there is no resistance force – there is no inertia. Inertia of a body vanishes when it nothing works also in any way. The passenger of the vessel going by sea about a full calm in the cabin does not learn its speed in any way until the vessel makes turn (some side speed appeared) or will not fly on a bank and the vessel will not begin to be pulled up.
2.
Not everything is so simple
However already in classical mechanics for the solution of practical tasks it was necessary to enter three forces of inertia: Newtonian, to a dalamberov and Euler. In size and dimension they are identical, but are mathematically described differently. Scientists well know that such situation – a symptom disturbing; means, we misunderstand something here. The fact that in zero gravity (we will tell, at free fall in emptiness) the inertia works indifferently forced to enter for any body two different, and at the same time identical, masses: the inert, giving ability to resist influences, and heavy on which body weight depends. It was silently supposed that inert and heavy masses is equal in accuracy each other, but strictly their identity is not proved to this day. With discovery of Higgs boson, the elementary particle giving to bodies weight and, respectively, inertia, physics in general began to avoid disputes and weight. It seems that they also ceased to understand that they after all want to learn. And how about inertia of sight? Cultural inertia? Inertia of the picture on the screen of the computer at which you, dear reader, sit now and you read this article? They, and great variety of other inertia – concepts not abstract, but quite concrete. With their help the specialists of the different industries do the work and receive payment by its results.
3.
Entropy, enthalpy, inertia
The question begins to clear up if to accept that weight – only private, and quite limited, an inertia manifestation case. Then there is an approach from the most reliable and universal position – power. Its foundation was laid in the 19th century by Josiah Uillard Gibbs. Gibbs entered into science two concepts – entropy and an enthalpy. The first characterizes aspiration of all in the world to disseminate the energy and to turn into chaos. The second – property of separate pieces of chaos to be organized in some order. Utter chaos and an absolute order mean the same – the death of all real. In chaos everything is mixed to total homogeneity and nothing changes and, so nothing occurs. In an absolute order just nothing changes and nothing occurs. In the living world the chaos and an order are interconnected and mutually supplement each other. Presently, as specifically the order generates chaos, and chaos – an order, the special science, the theory of chaos studies. Actually it is difficult and strict scientific discipline, and absolutely not that it is shown in the Hollywood movie. What does it have to do with inertia? But our world lives. In it something occurs, something changes. It is possible only if not only massive bodies, but also everything in general surely resists any influences. Otherwise either utter chaos, or an absolute order would be established at once. Or they without any intermediate changes would pass each other.
4.
Inertia and causality
The second, both not less important and ubiquitous, manifestation of general inertia – the principle of causality. Its essence is at first sight simple: everything that occurs, happens for some reason, and the investigation by all means follows the reason. Inertia is shown that between cause and effect there has to pass some period. Otherwise the world will instantly come or to utter chaos, or to an absolute order, and will die. The principle of causality is much more difficult and deeper, than can seem. The simplest example – a phrase from the detective or a western: "He did not hear a shot which killed him". Why? Shot at a back, and the bullet flies quicker than a sound. And here example more difficult for understanding. Let's imagine the worm rummaging in the earth. He is a blind person; the largest speed clear to it – the acoustic speed (compression waves) in the soil. The worm feels a push behind. If he is reasonable and develops the chervyachiny physics, he will try to find its reason especially as also other worms noticed just the same pushes not once. But as the worm is puffed up, nothing at him leaves: abstruse calculations, conclusions, unsolvable contradictions, not corresponding to anything, turn out. Why? Because the push in soil was generated by a shock wave from the flown by supersonic plane. When the worm felt a push behind, the plane was already far ahead. It does not mean that the theory of relativity is incorrect and we consider inertia of our world expressed through the speed of light only because we cannot perceive anything quicker, and we do the devices under our sense organs. Perhaps, there are worlds where inertia in millions, billions, trillions of times is less, than in ours and the maximum speed of signaling in as much times more. But the world where though something though for a moment will be deprived of inertia, it is impossible. It will at once die and will stop the existence.
5.
Result
Summing up the results, it is possible to tell the following: The first. Inertia as ability of all in the world of objects and phenomena to resist any influences, exists always and everywhere. It – the integral property of any world, and any world without inertia it is impractical. The second. In the absence of noticeable impacts on an object or the phenomenon of noticeable manifestations of inertness will also not be. The third. The lack of noticeable manifestations of inertness does not mean absence on it any influences. Perhaps, influence is, and inertia is shown, in the sphere which we cannot directly perceive or explore by means of devices.